CN102723972A - Vehicle-mounted information service system based on Bluetooth and external communication method thereof - Google Patents
Vehicle-mounted information service system based on Bluetooth and external communication method thereof Download PDFInfo
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- CN102723972A CN102723972A CN2012102178654A CN201210217865A CN102723972A CN 102723972 A CN102723972 A CN 102723972A CN 2012102178654 A CN2012102178654 A CN 2012102178654A CN 201210217865 A CN201210217865 A CN 201210217865A CN 102723972 A CN102723972 A CN 102723972A
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Abstract
The invention relates to a communication method of a vehicle-mounted information service system based on the Bluetooth. The vehicle-mounted information service system based on the Bluetooth can be in Bluetooth connection with a peripheral device. The communication method includes steps that: the vehicle-mounted information service system receives Bluetooth information from the peripheral device and then analyzes content in a serial-port protocol data unit in a Bluetooth protocol; and when the serial-port protocol data unit contains information of needing to play prompt tone, the vehicle-mounted information service system sets a sound channel of Bluetooth music to be with mixed sound and then sends Bluetooth information containing mixed sound successive setting information to the peripheral device through the serial-port protocol data unit of Bluetooth information. The communication method of the vehicle-mounted information service system based on the Bluetooth achieves the Telematics function by aid of the Bluetooth serial-port protocol, the peripheral device can perform prompt sound playing control on the vehicle-mounted information service system, and the external prompt sound and the music are processed in separating mode, so that the phenomenon that the vehicle-mounted information service system cannot hear the prompt sound when not in an external sound source is avoided.
Description
Technical field
The present invention relates to the means of communication, relate in particular to a kind of means of communication of peripheral hardware of the means of communication and a kind of vehicle-mounted information service system based on bluetooth of the vehicle-mounted information service system based on bluetooth.
Background technology
Bluetooth between vehicle-mounted information service system (like car audio system) and the peripheral hardware (like smart mobile phone, MP3 player, panel computer) connection at present is mainly used in phone or music playing function, and wired connection is normally passed through in the exchange of out of Memory.Wired connection is special-purpose or general connecting line through some, and the equipment that needs are connected couples together.It is own that wired connection depends on " line ", causes the inconvenience in the use, and often plug makes line loss bad easily.And the bluetooth connection only is used to make a phone call or playing back music mostly, seems and too wastes one's talent on a petty job.In addition, the prompt tone of handheld device transmits with the bluetooth music, and current as if vehicle audio is not the sound channel of having selected the bluetooth music, and then prompt tone or music can not exported.
Summary of the invention
Based on this, be necessary to provide a kind of based on means of communication bluetooth, that can realize the vehicle-mounted information service system of several data transmission and information communication.
A kind of means of communication of the vehicle-mounted information service system based on bluetooth, this vehicle-mounted information service system can be set up bluetooth with peripheral hardware and be connected.These means of communication comprise step:
Said vehicle-mounted information service system is resolved the content of the serial port protocol data cell the Bluetooth protocol after said peripheral hardware receives bluetooth information;
When comprising the information that needs playing alert tones in the serial port protocol data cell, said vehicle-mounted information service system is made as the sound channel of bluetooth music behind the audio mixing to send to said peripheral hardware through the serial port protocol data cell of bluetooth messages and comprises the bluetooth messages that audio mixing is provided with information of successful; And
When comprising the information of prompt tone broadcast end the serial port protocol data cell of the bluetooth information that receives from peripheral hardware, the audio mixing pattern of vehicle-mounted information service system cancellation bluetooth music.
In a preferred embodiment, said serial port protocol data cell comprises message id and additional data.
In a preferred embodiment; The means of communication of described vehicle-mounted information service system based on bluetooth comprise that further said vehicle-mounted information service system sends the step of vehicle condition data through the serial port protocol data cell in the Bluetooth protocol; Carry the data of vehicle condition type in the said message id, carry the concrete parameter of vehicle condition in the said additional data.
In a preferred embodiment, said vehicle condition type comprises at least a in automobile present speed, current driving mileage, this running time, engine speed, Fuel Remained amount, the car internal and external temperature.
The present invention also provides a kind of means of communication of peripheral hardware of the vehicle-mounted information service system based on bluetooth, and this vehicle-mounted information service system can be set up bluetooth with peripheral hardware and be connected, and the said means of communication comprise step:
Said peripheral hardware needs the bluetooth information of playing alert tones through the serial port protocol data cell in the Bluetooth protocol to said vehicle-mounted information service system transmission, and the control vehicle-mounted information service system is made as audio mixing with the sound channel of bluetooth music; And
When comprising audio mixing the serial port protocol data cell of the bluetooth information that receives from vehicle-mounted information service system information of successful is set, the prompt tone of said peripheral hardware sends to vehicle-mounted information service system through the A2DP protocol Data Unit of bluetooth information.
In a preferred embodiment, said peripheral hardware also can send prompt tone through the serial port protocol data cell in the Bluetooth protocol and play the bluetooth information that finishes, the audio mixing pattern of control vehicle-mounted information service system cancellation bluetooth music.
The means of communication of the vehicle-mounted information service system based on bluetooth of the present invention are utilized the bluetooth serial ports agreement, and (Serial Port Protocol SPP), has realized the Telematics function, and peripheral hardware can carry out the control of playing alert tones to vehicle-mounted information service system.The information of vehicle-mounted information service system also can send to peripheral hardware and handle, expansion vehicle-mounted information service system function.Peripheral hardware prompt tone and music separate processes avoid vehicle-mounted information service system just can't not hear prompt tone at the source of sound of peripheral hardware.
Description of drawings
Fig. 1 is the functional block diagram based on the vehicle-mounted information service system and the peripheral hardware of bluetooth of an embodiment.
Fig. 2 is the vehicle-mounted information service system of an embodiment and the sequential chart of peripheral hardware playing alert tones.
Embodiment
To combine specific embodiment and accompanying drawing that the vehicle-mounted information service system that the present invention is based on bluetooth and the means of communication of peripheral hardware are described in further detail below.
The means of communication of the present invention are applied in the system as shown in Figure 1, and this system comprises vehicle-mounted information service system and carries out the peripheral hardware of communication through bluetooth with it.In the present embodiment, vehicle-mounted information service system is automobile mounted sound system, and it mainly comprises micro-control unit, digital signal processing unit, power amplifier (power amplifier) and bluetooth module.
Micro-control unit is used to control whole system operation.Vehicle-mounted information service system generally has a plurality of source of sound (not shown), like vehicle-mounted digital multimedia radio receiver or digital audio broadcasting receiver, disc player, TV tuner, audio tunning device etc.Digital signal processing unit is used to handle the audio signal from each source of sound, and micro-control unit can be selected which source of sound of output by the control figure signal processing unit.Power amplifier is used for outputing to the loudspeaker broadcast after the audio signal amplification with digital signal processing unit output.Bluetooth module is used to set up bluetooth and connects (SPP, A2DP) and transmission data.
Peripheral hardware can be smart mobile phone, audio player or the panel computer of band bluetooth module and control unit.
Among the present invention, bluetooth connects except making a phone call and playing back music, can also carry out the transmission of out of Memory.The means of communication of the present invention are utilized SPP (the Serial Port Protocol in the Bluetooth protocol; Serial port protocol); Define one and be described in the agreement (Telematics agreement) that SPP goes up message transfer, thereby make vehicle-mounted information service system and peripheral hardware carry out the mutual of information.The information of the means of communication of the present invention can be transferred to peripheral hardware through SPP, and the message of peripheral hardware also can be transferred to the means of communication of the present invention, and information transmitted can both make an explanation according to the Telematics agreement.
An instance of Telematics agreement is shown in table one.XX in the table refers to concrete vehicle condition data.
Table one: Telematics agreement
The content of Telematics agreement need decide according to the functional definition of Telematics system in the practical application, and the consultation of different systems is different, and table one is that the Telematics system of one embodiment of the invention wants processed content.Visible from table, in this system, vehicle-mounted information service system can send to peripheral hardware with information such as present speed, mileage, running times and handle, and peripheral hardware can point out vehicle-mounted information service system when need play the prompt tone of peripheral hardware.Audio mixing in the table one is meant the function that the sound of a plurality of sound channels of digital signal processing unit is exported together.
For making blue-teeth data brief as far as possible, the serial port protocol data cell preferably comprises message id and additional data.Message id is the numeral of information representing type, and additional data is the particular content of message, and what for example message id 1 expression was sent is the present speed of automobile, is concrete speed data just in the additional data.But when type of message expressed intact message content, additional data just is empty, and for example message id 5 expressions need playing alert tones, and corresponding additional data is empty.
Wherein the prompt tone of peripheral hardware is the same with its musical sound need arrive vehicle-mounted information service system through A2DP (Advanced Audio Distribution Profile, the advanced audio host-host protocol) protocol transmission of bluetooth.
In order to let vehicle-mounted information service system distinguish the prompt tone of peripheral hardware and common music; Must define related news on the Telematics agreement, for example the message id in the table one 5,6 and 7: " needing playing alert tones ", " audio mixing is provided with success ", " prompt tone is play and finished " etc.
When peripheral hardware needs vehicle-mounted information service system output prompt tone, as shown in Figure 2, may further comprise the steps based on the vehicle-mounted information service system of bluetooth and the means of communication of peripheral hardware:
Step 1., peripheral hardware must be in advance sends the bluetooth information of " needing playing alert tones " through the serial port protocol data cell in the Bluetooth protocol to vehicle-mounted information service system.
2. step after vehicle-mounted information service system receives bluetooth information from peripheral hardware, resolves the content of the serial port protocol data cell in the Bluetooth protocol, is made as audio mixing output to the sound channel of bluetooth music.
Step 3., vehicle-mounted information service system sends the information of " audio mixing is provided with success " to peripheral hardware through the serial port protocol data cell in the Bluetooth protocol.
Step 4., peripheral hardware sends to vehicle-mounted information service system with the A2DP protocol Data Unit of prompt tone through bluetooth information, and vehicle-mounted information service system is exported prompt tone with the sound of the current sound channel of vehicle-mounted information service system.
Step 5., when the prompt tone of peripheral hardware finished or do not need playing alert tones again, peripheral hardware need send the bluetooth information of " prompt tone is play and finished " through the serial port protocol data cell in the Bluetooth protocol to vehicle-mounted information service system.
Step 6., vehicle-mounted information service system is made as the output of non-audio mixing to the bluetooth music soundtrack, vehicle-mounted information service system will only be exported the sound of current sound channel like this.
Vehicle-mounted information service system is just fairly simple with the process that vehicle condition data such as present speed, mileage, running time send to peripheral hardware.As long as according to agreement, in message id, carry the vehicle condition type, the concrete parameter of in additional data, carrying vehicle condition gets final product.Shown in table one, the vehicle condition type can comprise at least a in automobile present speed, current driving mileage, this running time, engine speed, Fuel Remained amount, the car internal and external temperature.
To sum up; The means of communication of the vehicle-mounted information service system based on bluetooth of the present invention are utilized bluetooth serial ports agreement (Serial Port Protocol; SPP), realized the Telematics function, peripheral hardware can carry out the control of playing alert tones to vehicle-mounted information service system.The information of vehicle-mounted information service system also can send to peripheral hardware and handle, expansion vehicle-mounted information service system function.Peripheral hardware prompt tone and music separate processes avoid vehicle-mounted information service system just can't not hear prompt tone at the source of sound of peripheral hardware.
The above embodiment has only expressed several kinds of execution modes of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with accompanying claims.
Claims (6)
1. means of communication based on the vehicle-mounted information service system of bluetooth, this vehicle-mounted information service system can be set up bluetooth with peripheral hardware and be connected, and it is characterized in that the said means of communication comprise step:
Said vehicle-mounted information service system is resolved the content of the serial port protocol data cell the Bluetooth protocol after said peripheral hardware receives bluetooth information;
When comprising the information that needs playing alert tones in the serial port protocol data cell, said vehicle-mounted information service system is made as the sound channel of bluetooth music behind the audio mixing to send to said peripheral hardware through the serial port protocol data cell of bluetooth messages and comprises the bluetooth messages that audio mixing is provided with information of successful; And
When comprising the information of prompt tone broadcast end the serial port protocol data cell of the bluetooth information that receives from peripheral hardware, the audio mixing pattern of vehicle-mounted information service system cancellation bluetooth music.
2. the means of communication of the vehicle-mounted information service system based on bluetooth according to claim 1 is characterized in that said serial port protocol data cell comprises message id and additional data.
3. the means of communication of the vehicle-mounted information service system based on bluetooth according to claim 2; It is characterized in that; Comprise that further said vehicle-mounted information service system sends the step of vehicle condition data through the serial port protocol data cell in the Bluetooth protocol; Carry the data of vehicle condition type in the said message id, carry the concrete parameter of vehicle condition in the said additional data.
4. the means of communication of the vehicle-mounted information service system based on bluetooth according to claim 3; It is characterized in that said vehicle condition type comprises at least a in automobile present speed, current driving mileage, this running time, engine speed, Fuel Remained amount, the car internal and external temperature.
5. means of communication based on the peripheral hardware of the vehicle-mounted information service system of bluetooth, this vehicle-mounted information service system can be set up bluetooth with peripheral hardware and be connected, and it is characterized in that the said means of communication comprise step:
Said peripheral hardware needs the bluetooth information of playing alert tones through the serial port protocol data cell in the Bluetooth protocol to said vehicle-mounted information service system transmission, and the control vehicle-mounted information service system is made as audio mixing with the sound channel of bluetooth music; And
When comprising audio mixing the serial port protocol data cell of the bluetooth information that receives from vehicle-mounted information service system information of successful is set, the prompt tone of said peripheral hardware sends to vehicle-mounted information service system through the A2DP protocol Data Unit of bluetooth information.
6. the means of communication according to claim 5 is characterized in that, said peripheral hardware also can send prompt tone through the serial port protocol data cell in the Bluetooth protocol and play the bluetooth information that finishes, the audio mixing pattern of control vehicle-mounted information service system cancellation bluetooth music.
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| CN105225684A (en) * | 2015-08-19 | 2016-01-06 | 贺中义 | A kind of method listening to transport information or navigation information when broadcast listening |
| CN108184193A (en) * | 2017-12-28 | 2018-06-19 | 西安Tcl软件开发有限公司 | Control method for playing back, bluetooth equipment and the computer storage media of bluetooth playback terminal |
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Application publication date: 20121010 |