CN2652067Y - Bluetooth telephone on board - Google Patents

Bluetooth telephone on board Download PDF

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Publication number
CN2652067Y
CN2652067Y CNU2003201178032U CN200320117803U CN2652067Y CN 2652067 Y CN2652067 Y CN 2652067Y CN U2003201178032 U CNU2003201178032 U CN U2003201178032U CN 200320117803 U CN200320117803 U CN 200320117803U CN 2652067 Y CN2652067 Y CN 2652067Y
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CN
China
Prior art keywords
bluetooth
car
telephone
utility
microphone
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Expired - Fee Related
Application number
CNU2003201178032U
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Chinese (zh)
Inventor
李振荣
李海涛
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Fusheng Electronic Sci & Tech (shenzhen) Co Ltd
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Fusheng Electronic Sci & Tech (shenzhen) Co Ltd
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Priority to CNU2003201178032U priority Critical patent/CN2652067Y/en
Application granted granted Critical
Publication of CN2652067Y publication Critical patent/CN2652067Y/en
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Abstract

The utility model mainly discloses a car telephone hand free proposal realized by utilizing Bluetooth and GSM technology. The system is composed of a car telephone body, a Bluetooth body, a receiver, The utility model mainly discloses a scheme on realizing vehicle-mounted hand-free telephone by combining Bluetooth technology with GSM technology, which comprises a vehicle-mounted telephone set, a Ba remote controller, a voice tube, a microphone, a car audio, loudspeakers (the loudspeakers of the car audio), etc. The utility model and a mobile phone with a Bluetooth function together form the inluetooth host, a receiver, a remote control, a telephone transmitter, a microphone, an automotive acoustic system, a loudspeaker (automotive loudspeaker), etc. The utility model is combined with a Blutegral mobile phone with the function of Bluetooth hand free; if the utility model does not provided with the mobile phone with the Bluetooth function, the GSM car telephone can be used for conversatietooth-based mobile phone to form an intact Bluetooth hand-free function. A call can be fulfilled by means of a GSM vehicle-mounted telephone without a Bluetooth-based mobile phone. The utility model on. The proposal solves the non selectivity of the car telephone and long-term disturbance caused by wiring harness connection, and overcomes the disadvantages of the existing car hand free system; thprovides selectivity for vehicle-mounted telephones, eliminates troubles of connecting lines to people, overcomes many defects of hand-free vehicle-mounted telephone system, substitutes R232, USB, etce utility model can replace R232, UBS, etc. and uses the mode of electric cable connection t carry out data transmission, an earphone and the microphone are directly used for communication, the loudsp. to realize data transmission with cables and directly utilizes an earphone and a microphone to achieve communication, adopts an automatic loudspeaker to fulfill hand-free function, acquires talks theakers of the car audio can also be utilized to realize the function of hand free; bedsides, the microphone can be used for communication, the remote controller, the mobile phone with the Bluetooth furough a telephone transmitter, uses dial keys of a remote control, a Bluetooth-based mobile phone or a vehicle-mounted telephone to dial, thus showing advantages of simple structure, easy operation annction and the dial keys of the car telephone can be used for dialing. The utility model has the advantages of simple structure, convenient operation, wide range of application, etc., and can be wideld wide applicable scope, extensively applying to various vehicles, forming an anti-theft system with an anti-theft device on vehicles and tangibly achieving a vehicle-mounted telephone on vehicles, a y used for various means of communication; furthermore, the utility model and a car burglarproof device can form a burglarproof system, and the utility model can realize purposes that once a user getsmobile phone out of vehicles and combination of telephone and anti-theft functions. on a car, the mobile phone can be used as the car telephone; when the user gets off the car, the mobile phone can be restored to the original condition, and the function of communication and burglarproof function are combined.

Description

Car phone with Bluetooth function
Technical field
The utility model relates to car phone, more particularly, relates to a kind of car phone of bluetooth enable, and it is applied to Bluetooth technology in the car phone, has solved all drawbacks that wire harness connects, and has realized the wireless penetration that connects.
Background technology
Bluetooth (Bluetooth) is by the technical standard of companies such as Toshiba, Ericsson, IBM, Intel and Nokia in the common near radio digital communication that proposes of in May, 1998.Its target is to realize that the maximum data transmission speed 1Mb/s (effective transmission speed is 721kb/s), maximum transmission distance are 10 meters, the user needn't just can utilize ISM (industry, science, the medical science) frequency band of 2.4GHz through application, with switch 1600 times frequency each second, the spread spectrum techniques of gear hobbing mode realizes the transmitting-receiving of electric wave.Its technical advantage is: support voice and transfer of data; Adopt radiotechnics, transmission range is big; Low in energy consumption; Cost is low.
Along with portable product is used widely, the application of Bluetooth technology will be more and more wide also, and domestic also the appearance is applied to Bluetooth technology in the car phone at present, therefore have the huge novelty and the progressive of showing.
The utility model content
Main purpose of the present utility model is to provide a kind of technical scheme, solve the application of Bluetooth technology in car phone, finish the constraint that people are connected by cable for a long time, and car phone can not compatibility and selectivity, can realize functions such as conversation is hands-free, burglar alarm without restriction within the specific limits.
When with the use bluetooth cellular phone, if the user leaves automobile in using the car handsfree process, system can automatically switch to signal on the mobile phone by hands-free state, and the user can proceed information interchange.When in use entering in the automobile, system switches to signal hands-free state automatically, realizes " it is vehicle-mounted getting on the bus, and getting off is mobile phone "; When the user did not use mobile phone, the gsm communication system (can call and receive calls) that then can utilize the utility model device to have can be realized communication function.
To achieve these goals, car phone with Bluetooth function is made up of car phone (GSM) main frame, bluetooth host, remote controller, earphone, microphone, microphone, automobile audio, automotive acoustic speaker, and car phone (GSM) main frame and bluetooth host are cores of the present utility model.Its circuit mainly is made up of MCU (microprocessor), bluetooth module (bluetooth radio-frequency (RF) receiving and transmission module, contain mould/number, A/D converter, coding/decoding unit) frequently, power control circuit unit, frequency switch circuit unit, audio frequency processing circuit, gsm module circuit, receiving circuit, remote control circuit etc.Accessing to audio treatment circuit between gsm module and bluetooth host and the frequency switch circuit.The Bluetooth RF transceiver module is connected with mould/number, A/D converter, coding/decoding unit, and earphone, microphone, microphone etc. connect quiet commutation circuit, and dialing keyboard links to each other with microprocessor.
When bluetooth cellular phone is received the signal of calling, at first signal receives by antenna and amplifies, this moment, mobile phone sent a series of instruction to bluetooth handsfree, after bluetooth host receives these instructions, digital signal is converted to analog signal, and decoder is deciphered, through frequency switch circuit, provide signal and drive frequency switch circuit work, sound equipment is switched to mute state, again audio signal is play by the right front loudspeaker of automobile, input is then by microphone, thereby the realization hand-free function also can utilize External micro phone to converse, can also caller ID be shown by adding display driver and display circuit.
When if the user uses this car phone gsm system to communicate, when Outgoing Call, can import by dialing keyboard, signal sends through microprocessor and GSM radio-frequency module, and the action of hands-free part also is to be realized by microprocessor control audio commutation circuit.Working method when incoming call is answered is identical with Outgoing Call.The mode that receives calls of this car phone can also earphone and hands-free between, between the hands-free and mobile phone, carry out freely switching between the hands-free and microphone, further other additional function of exploitation is more convenient to use as required.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is the circuit diagram of bluetooth host in preferred embodiment of the utility model;
Fig. 3,4,5 is the circuit diagram of car phone (GSM) main frame that cooperates with Fig. 2 of the utility model.
Embodiment
If the user is the bluetooth cellular phone user, the utility model embodiment can realize the hand-free function of conversing.Now realize that with regard to bluetooth users the car handsfree principle of work and power is described further.
As shown in Figure 1, the car phone with Bluetooth function of the present utility model mainly comprises three parts:
First is a bluetooth host, is made up of Bluetooth RF transceiver module (containing A/D conversion circuit), coding/decoding circuit, microprocessor, Bluetooth antenna etc., and its building block does not draw among the figure;
Second portion is car phone (GSM) main frame, is made up of emblem processor, frequency switch circuit, power control circuit, remote-control receiving circuit etc.;
Third part is the peripheral hardware of car phone, by receiver, remote controller, automobile audio, automotive acoustic speaker, microphone, and composition such as microphone, earphone.
Power control circuit among the figure provides reliable work energy for whole car phone with Bluetooth function.
The Bluetooth RF transmission circuit is whole hands-free part and parcel, the data that it is responsible for sending out on the bluetooth cellular phone are carried out D/A switch, again by the decoding/encoding circuit, signal after treatment is transferred to respectively by on car phone main frame and the bluetooth cellular phone, sends to current talking side by bluetooth cellular phone again.When its signal is transferred on the car phone main frame, handle, finish the quiet action of sound equipment by the processor in the car phone main frame.
When making a phone call, speaker's sound is converted to analog signal by microphone or microphone with voice signal, wherein microphone is for having mini microphone and Microspeaker function, pass through coding/decoding circuit, Bluetooth RF transceiver module, and give bluetooth cellular phone by antenna transmission with data packet form.When receiving calls, bluetooth cellular phone sends signal, receives through antenna and passes to the Bluetooth RF transceiver module, realizes speech communication by the circuit of back again.The circuit operation of audio frequency switching part is identical when wherein getting phone and receiving calls, as long as the signal input is promptly arranged, the frequency switch circuit in the car phone main frame will move.
Be illustrated in figure 2 as the circuit diagram of bluetooth host in preferred embodiment of the utility model, when the Vehicular phone device with Bluetooth function receives signal, carry out signal processing (D/A switch) by Bluetooth RF transceiver module MSM7731, and signal is transferred to MCI145483 carries out decoding/encoding and handle, between radio-frequency (RF) receiving and transmission module MSM7731 and the bluetooth module bluetooth, by the I/O interface circuit in succession, carry out exchanges data between bluetooth module and the decoding/encoding device MCI145483.
When signal inputed or outputed, microprocessor PIC16C63 the 3rd pin among Fig. 3 will be exported control signal, and when being output as low level, the circuit of being made up of two triode Q203, Q402 with switching function ends, and relay SS16 is failure to actuate; When being output as high level, two triode conductings, relay SS16 action, automobile audio is muted; When end of conversation, the signal that microprocessor PIC16C63 provides during according to end of conversation is from low level of its 3rd pin output, the switching function circuit ends, relay SS16 recovers the state before the action, and the automobile audio mute state is removed, thus the implement device hand-free function.
When using earphone receiving, by signal of earphone input, detect through handling, by microprocessor PIC16C63 the 3rd pin output high level, make drive circuit quiet to sound equipment, and, audio signal by earphone or microphone output, is realized the switching between hands-free and the earphone by microprocessor PIC16C63 control.Wherein earphone is that configuration device can be selected in the outside, is connected by interface with main frame.Microphone and hands-free between conversion be to give control signal of microprocessor PIC16C63 when utilize using microphone, and by microprocessor PIC16C63, audio signal switches to microphone output.More than two kinds of switchings be to utilize the mode of software to control.When the user has left the effective propagation distance of bluetooth, bluetooth host radio-frequency (RF) receiving and transmission module MSM7731 can not receive relevant data, go out instruction through microprocessor the 2nd human hair combing waste, be returned to the state before car phone uses, hand-free function automatically switches on the mobile phone.
If the user is not to use mobile phone (comprising the mobile phone with Bluetooth function), also can use the utility model embodiment to carry out relevant information interchange.Shown in Fig. 3,4,5, its operation principle is: after sending instruction by dialing keyboard or remote controller, a part is carried out signal processing by microprocessor PIC16C63, exporting signal drives the frequency switch circuit action output of sound equipment is stopped, audio signal by Music centre loudspeaker as hands-free output, also can be by microphone or earphone as output; Another part is handled by microprocessor PIC16C63 and is carried out being launched by the GSM radio-frequency module after the noise isolation through photoelectricity coupling device, realizes transfer of data, thus real communication function, and all quiet part operation principles are identical.
This car phone can be formed a wireless anti-theft network with car alarm simultaneously, after its working method is opened for being triggered when alarm, connect the triggering signal of INT pin that to give car phone microprocessor PIC16C63 by interface circuit, send antitheft note by the mobile phone that can set to the user automatically after the microprocessor PIC16C63 processing, remind to love car by illegal invasion, finish realizing of this process by software.

Claims (4)

1, a kind of have a Bluetooth function car phone, comprises the car phone main frame, it is characterized in that, also comprises bluetooth host, comprises Bluetooth RF transceiver module, A/D conversion circuit, coding/decoding circuit and Bluetooth antenna in the described bluetooth host; Described bluetooth host is connected with the microprocessor of described car phone, car phone main frame, remote controller, receiver, antenna, microphone, earphone, microphone, and available automobile audio and loudspeaker thereof, its method of attachment is: loudspeaker utilize the mode of Peripheral Interface to be connected with the car phone main frame before receiver, microphone, earphone, microphone, automobile audio, the automobile, and antenna is to be connected with the car phone main frame by lead.
2, bluetooth host according to claim 1 is characterized in that having radio-frequency (RF) receiving and transmission module, the coding/decoding circuit unit, and wherein the Bluetooth RF transceiver module should have digital-to-analog, analog/digital signal conversion function.
3, car phone main frame as claimed in claim 1, it is characterized in that forming by voicefrequency circuit, GSM radio-frequency module, microprocessor etc., wherein, frequency switch circuit is the analog circuit that utilizes two triodes to be combined into the to have switching function drive circuit as frequency switch circuit, between GSM radio-frequency module and the microprocessor by photoelectricity coupling device as buffer circuit.
4, as bluetooth host as described in the claim 2, the connected mode between all circuit units is not unique constant, can carry out multi-form being connected as required, reaches different functions, and this programme only provides wherein a kind of embodiment.
CNU2003201178032U 2003-11-04 2003-11-04 Bluetooth telephone on board Expired - Fee Related CN2652067Y (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CNU2003201178032U CN2652067Y (en) 2003-11-04 2003-11-04 Bluetooth telephone on board

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008011747A1 (en) * 2006-06-22 2008-01-31 Lee, Chienmin Bluetooth on-vehicle
CN101453231A (en) * 2007-12-06 2009-06-10 比亚迪股份有限公司 Vehicle mounted telephone apparatus and control method
CN102685294B (en) * 2008-04-04 2014-12-10 株式会社电装 In-vehicle handsfree apparatus
CN108024237A (en) * 2016-11-01 2018-05-11 比亚迪股份有限公司 The connection system and method and car-mounted terminal and automobile of on-vehicle Bluetooth earphone
CN115086475A (en) * 2021-03-12 2022-09-20 海能达通信股份有限公司 Voice call mode control method, device and equipment

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008011747A1 (en) * 2006-06-22 2008-01-31 Lee, Chienmin Bluetooth on-vehicle
CN101453231A (en) * 2007-12-06 2009-06-10 比亚迪股份有限公司 Vehicle mounted telephone apparatus and control method
CN101453231B (en) * 2007-12-06 2013-05-29 比亚迪股份有限公司 Vehicle mounted telephone apparatus and control method
CN102685294B (en) * 2008-04-04 2014-12-10 株式会社电装 In-vehicle handsfree apparatus
CN108024237A (en) * 2016-11-01 2018-05-11 比亚迪股份有限公司 The connection system and method and car-mounted terminal and automobile of on-vehicle Bluetooth earphone
CN115086475A (en) * 2021-03-12 2022-09-20 海能达通信股份有限公司 Voice call mode control method, device and equipment
CN115086475B (en) * 2021-03-12 2023-12-12 海能达通信股份有限公司 Control method, device and equipment for voice call mode

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C19 Lapse of patent right due to non-payment of the annual fee
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