CN106973342A - Vehicle audio tuner adjust automatically detecting system based on I2C buses - Google Patents
Vehicle audio tuner adjust automatically detecting system based on I2C buses Download PDFInfo
- Publication number
- CN106973342A CN106973342A CN201710170683.9A CN201710170683A CN106973342A CN 106973342 A CN106973342 A CN 106973342A CN 201710170683 A CN201710170683 A CN 201710170683A CN 106973342 A CN106973342 A CN 106973342A
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- China
- Prior art keywords
- chip microcomputers
- mcu single
- tuner
- buses
- signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2420/00—Details of connection covered by H04R, not provided for in its groups
- H04R2420/05—Detection of connection of loudspeakers or headphones to amplifiers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
The invention discloses a kind of vehicle audio tuner adjust automatically detecting system based on I2C buses, including MCU single-chip microcomputers, control button, power module, gpib interface, d. c. voltage signal switching switch, AC audio signal shift switch, active linear wave detector, A/D modular converters and LCDs；The present invention sets frequency synthesis loop using I2C bus structures, data bus structure, simulation numeral loop is integrated, integrated level is high, performance is high, number Ju bus adjustment tuned high frequency amplifying return circuit, in put back to road, receive platform sensitivity, stereo crosstalk etc., data are put into internal corresponding register, eliminate adjustment can power transformation flesh, the elements such as variable capacitance, simplify system architecture, whole equipment realizes unmanned adjustment and the automatic detection of vehicle audio tuner under MCU programme-control, eliminate and manually adjust, improve productivity ratio and the uniformity of product, the performance of tuner is further enhanced.
Description
Technical field
The invention belongs to vehicle audio technical field, it is related to a kind of vehicle audio tuner adjustment detecting system, is specifically
A kind of vehicle audio tuner adjust automatically detecting system based on I2C buses.
Background technology
In recent years Come, with continuing to develop for vehicle audio technology, functionally, in performance is proposed to vehicle audio tuner
Higher requirement.Require that energy full system type pictorial, all band receive FM/AM broadcast first, with high stability, high noise immunity, and
And further reduce in terms of volume.
, it is necessary to do many adjustment in usual vehicle audio tuner manufacturing process：There are High frequency amplification, local oscillation part
The adjustment of inductance coil and variable capacitance, there is adjustment of intermediate-frequency transformer, variable resistor etc..But, these adjustment and detection are all
It is manual, manually carry out, it is not only cumbersome, and to have suitable technical ability, tuner could be adjusted to optimum performance.
The content of the invention
It is an object of the invention to provide a kind of vehicle audio tuner adjust automatically detecting system based on I2C buses.
The purpose of the present invention can be achieved through the following technical solutions：
Vehicle audio tuner adjust automatically detecting system based on I2C buses, including MCU single-chip microcomputers, control button, electricity
Source module, gpib interface, d. c. voltage signal switching switch, AC audio signal shift switch, active linear wave detector, A/D
Modular converter and LCDs；
The MCU single-chip microcomputers, FM/AM reference signal generators, control FM/AM standard signal hairs are connected by gpib interface
Raw device exports all kinds of debugging, detection signal to vehicle-mounted tuner to be detected；
The control button, connects MCU single-chip microcomputers, is manually entered control instruction to MCU single-chip microcomputers, each function of control system
Module works；
The power module, powers for the MCU single-chip microcomputers and each functional module to system；
The d. c. voltage signal switching switch, connects MCU single-chip microcomputers, in the control of MCU single-chip microcomputers by I2C buses
Under, the DC voltage detection signal of vehicle-mounted tuner output to be detected is gated, and be output to A/D modular converters；
The AC audio signal shift switch, connects MCU single-chip microcomputers, in the control of MCU single-chip microcomputers by I2C buses
Under, the AC audio detection signal of vehicle-mounted tuner output to be detected is gated, and be output to active linear wave detector；
The active linear wave detector, the AC audio signal for AC audio signal shift switch to be exported is converted into
D. c. voltage signal, is output to A/D modular converters；
The A/D modular converters, for the analog DC voltage received signal to be converted into data signal, are output to
MCU single-chip microcomputers are handled；
The LCDs, connects MCU single-chip microcomputers, the running parameter of each functional module of real-time display system.
Beneficial effects of the present invention：The vehicle audio tuner adjust automatically detecting system that the present invention is provided, it is total using I2C
Cable architecture sets frequency synthesis loop, and data bus structure, simulation numeral loop be integrated, and integrated level is high, performance is high, number
Ju bus adjustment tuned high frequency amplifying return circuit, in put back to road, receive platform sensitivity, stereo crosstalk etc., data are put into internal right
The register answered, eliminate adjustment can the element such as power transformation flesh, variable capacitance, simplify system architecture, whole equipment is in MCU
Programme-control under realize unmanned adjustment and the automatic detection of vehicle audio tuner, eliminate and manually adjust, improve production
The uniformity of rate and product, the performance of tuner is further enhanced.
Brief description of the drawings
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the system schematic of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is all other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As shown in figure 1, detecting system the invention provides a kind of vehicle audio tuner adjust automatically based on I2C buses
System, including MCU single-chip microcomputers, control button, power module, gpib interface, voltage changeover switch, signal shift switch, active line
Property wave detector, A/D modular converters and LCDs.
Vehicle-mounted tuner has many direct currents and Tou frequency signals for needing to detect, under the control of MCU programs, gates each road inspection
Survey signal；In addition, MCU controls FM/AM reference signal generators to export all kinds of debugging, detection signal by gpib interface, entirely
Equipment realizes unmanned adjustment and the automatic detection of vehicle audio tuner under MCU programme-control
MCU single-chip microcomputers, FM/AM reference signal generators are connected by gpib interface, control FM/AM reference signal generators
Export all kinds of debugging, detection signal to vehicle-mounted tuner to be detected.MCU single-chip microcomputers are believed using gpib interface with FM/AM standards
Number generator carries out data communication, and because MCU single-chip machine information disposal abilities are limited, FM/AM reference signal generators exist first
Each used frequency and output level are stored into the register of FM/AM reference signal generators in test process, are used
When, MCU sends instruction and calls each register to encode by gpib interface, and simplicity is quickly obtained required test signal.
Control button, connects MCU single-chip microcomputers, is manually entered control instruction to MCU single-chip microcomputers, each functional module of control system
Work.
Power module, for producing 8.5V ,+5V, -5V DC voltages, MCU single-chip microcomputers and each functional module to system
Power supply.
D. c. voltage signal switching switch, selects 1 simulant electronic switch using 2 group 8, MCU monolithics is connected by I2C buses
Machine, under the control of MCU single-chip microcomputers, gates the DC voltage detection signal of vehicle-mounted tuner output to be detected, and be output to
A/D modular converters.
AC audio signal shift switch, 1 simulant electronic switch is selected using 2 group 8, and MCU monolithics are connected by I2C buses
Machine, under the control of MCU single-chip microcomputers, gates the AC audio detection signal of vehicle-mounted tuner output to be detected, and be output to
Active linear wave detector.
Active linear wave detector, the AC audio signal for AC audio signal shift switch to be exported is converted into direct current
Voltage signal, is output to A/D modular converters.
A/D modular converters, for the analog DC voltage received signal to be converted into data signal, are output to MCU mono-
Piece machine is handled.
LCDs, using 16x4 LCDs, connects MCU single-chip microcomputers, each functional module of real-time display system
Running parameter.
In the present invention, system is as data-interface in the way of I2C buses, and I2C buses are to communicate most succinct between device
Effective manner, it is the object that data transfer is distinguished according to different addresses, so will not be clashed between device.System
The form of the MCU simulation I2C standards of system is as main frame, and other devices can be read and write as slave, main frame and slave, but slave
It can only be worked according to the direction of main frame.One I2C buses are made up of two lines road, SDA line and SCL lines, SDA line transmission data, SCL
Line provides clock.All data are one group with 8 and transmitted by I2C buses that I2C buses are two-way, and SDA line can be sent with Come
With reception data.When main frame reads data from slave, slave driving number Ju line is main when main frame sends number Ju to slave
Machine driving data line, and main frame always drives clock line.Most time I2C buses are idle, when being communicated, bus
It is activated, only main frame, which says the word, to be communicated, a beginning condition is formed first in bus, data transmission terminates
When, a termination condition is formed in bus.For each byte sent in I2C buses, either address is still counted
According to being used as response using a response bits, it is ensured that between main frame and slave data mutually transmit it is accurate.
The vehicle audio tuner adjust automatically detecting system that the present invention is provided, frequency is set using I2C bus structures
Synthesis loop, data bus structure, simulation numeral loop are integrated, and integrated level is high, performance is high, and the bus adjustment tuning of number Ju is high
Frequency amplifying return circuit, in put back to road, receive platform sensitivity, stereo crosstalk etc., data are put into internal corresponding register, eliminate
Adjustment can the element such as power transformation flesh, variable capacitance, simplify system architecture, whole equipment is realized under MCU programme-control
The unmanned adjustment of vehicle audio tuner and automatic detection, eliminate and manually adjust, and improve productivity ratio and the uniformity of product,
The performance of tuner is further enhanced.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
At least one implementation of the present invention is contained in reference to specific features, structure, material or the feature that the embodiment or example are described
In example or example.In this manual, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.
Moreover, specific features, structure, material or the feature of description can be closed in any one or more embodiments or example
Suitable mode is combined.
Above content is only to structure example of the present invention and explanation, affiliated those skilled in the art couple
Described specific embodiment is made various modifications or supplement or substituted using similar mode, without departing from invention
Structure surmounts scope defined in the claims, all should belong to protection scope of the present invention.
Claims (1)
1. the vehicle audio tuner adjust automatically detecting system based on I2C buses, it is characterised in that：Including MCU single-chip microcomputers, control
Button processed, power module, gpib interface, d. c. voltage signal switching switch, the inspection of AC audio signal shift switch, active linear
Ripple device, A/D modular converters and LCDs；
The MCU single-chip microcomputers, FM/AM reference signal generators are connected by gpib interface, control FM/AM reference signal generators
Export all kinds of debugging, detection signal to vehicle-mounted tuner to be detected；
The control button, connects MCU single-chip microcomputers, is manually entered control instruction to MCU single-chip microcomputers, each functional module of control system
Work；
The power module, powers for the MCU single-chip microcomputers and each functional module to system；
The d. c. voltage signal switching switch, MCU single-chip microcomputers are connected by I2C buses, under the control of MCU single-chip microcomputers, choosing
The DC voltage detection signal of logical vehicle-mounted tuner output to be detected, and it is output to A/D modular converters；
The AC audio signal shift switch, MCU single-chip microcomputers are connected by I2C buses, under the control of MCU single-chip microcomputers, choosing
The AC audio detection signal of logical vehicle-mounted tuner output to be detected, and it is output to active linear wave detector；
The active linear wave detector, the AC audio signal for AC audio signal shift switch to be exported is converted into direct current
Voltage signal, is output to A/D modular converters；
The A/D modular converters, for the analog DC voltage received signal to be converted into data signal, are output to MCU mono-
Piece machine is handled；
The LCDs, connects MCU single-chip microcomputers, the running parameter of each functional module of real-time display system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710170683.9A CN106973342A (en) | 2017-03-21 | 2017-03-21 | Vehicle audio tuner adjust automatically detecting system based on I2C buses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710170683.9A CN106973342A (en) | 2017-03-21 | 2017-03-21 | Vehicle audio tuner adjust automatically detecting system based on I2C buses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106973342A true CN106973342A (en) | 2017-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710170683.9A Pending CN106973342A (en) | 2017-03-21 | 2017-03-21 | Vehicle audio tuner adjust automatically detecting system based on I2C buses |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111966005A (en) * | 2020-07-01 | 2020-11-20 | 武汉科技大学 | Multi-platform driving debugging device |
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| CN2682492Y (en) * | 2003-11-01 | 2005-03-02 | 深圳创维－Rgb电子有限公司 | Preset read-write device for IC bus electric appliance |
| CN201063051Y (en) * | 2007-06-06 | 2008-05-21 | 深圳市同洲电子股份有限公司 | Device for testing high-frequency electronic tuner |
| CN104218961A (en) * | 2014-09-01 | 2014-12-17 | 延锋伟世通电子科技（上海）有限公司 | Vehicular dual-chip radio |
| CN104579510A (en) * | 2013-10-22 | 2015-04-29 | 深圳市伊爱高新技术开发有限公司 | Automatic GNSS (global navigation satellite system) vehicle-mounted terminal testing device |
| CN105158579A (en) * | 2015-08-31 | 2015-12-16 | 四川长虹电器股份有限公司 | Silicon tuner RF FILTER automatic detection method |
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2017
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Patent Citations (5)
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| CN2682492Y (en) * | 2003-11-01 | 2005-03-02 | 深圳创维－Rgb电子有限公司 | Preset read-write device for IC bus electric appliance |
| CN201063051Y (en) * | 2007-06-06 | 2008-05-21 | 深圳市同洲电子股份有限公司 | Device for testing high-frequency electronic tuner |
| CN104579510A (en) * | 2013-10-22 | 2015-04-29 | 深圳市伊爱高新技术开发有限公司 | Automatic GNSS (global navigation satellite system) vehicle-mounted terminal testing device |
| CN104218961A (en) * | 2014-09-01 | 2014-12-17 | 延锋伟世通电子科技（上海）有限公司 | Vehicular dual-chip radio |
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| CN111966005B (en) * | 2020-07-01 | 2022-12-20 | 武汉科技大学 | Multi-platform driving debugging device |
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| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170721 |