CN107277297A - A kind of intelligent communication control system - Google Patents
A kind of intelligent communication control system Download PDFInfo
- Publication number
- CN107277297A CN107277297A CN201710459772.5A CN201710459772A CN107277297A CN 107277297 A CN107277297 A CN 107277297A CN 201710459772 A CN201710459772 A CN 201710459772A CN 107277297 A CN107277297 A CN 107277297A
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- resistance
- voltage stabilizing
- module
- stabilizing chip
- electric capacity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
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- Engineering & Computer Science (AREA)
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- Processing Of Color Television Signals (AREA)
Abstract
The invention discloses a kind of intelligent communication control system, including input interface, wave filter, decoder module, operational amplifier, separated in synchronization module and encoder, the input interface connects wave filter and electronic signal respectively, wave filter is also connected with decoder module, decoder module is also respectively connected with operational amplifier, separated in synchronization module and power module, operational amplifier also connects A/D modular converters by isolation module, A/D modular converters are also respectively connected with crystal oscillator and CPLD modules, CPLD modules are also respectively connected with separated in synchronization module and encoder, encoder is also connected with output interface.The present invention realizes IMAQ using ADC on DSP piece, it is not necessary to professional video decoding chip, with circuit is simple, cost is low, easy maintenance and upgrading the characteristics of；Other power module stability is high, it is possible to increase the reliability of system.
Description
Technical field
The present invention relates to a kind of control system, specifically a kind of intelligent communication control system.
Background technology
Fast-developing automobile industry provides wide application market for vehicle electronics product, such as vehicle-mounted " infrared prison
Depending on ", the video surveillance devices such as " radar for backing car ", be that driver had both brought conveniently, also bring safety.These supervision equipments from
Video image acquisition is not opened, and the key link of video image acquisition is exactly the AD conversion of electronic signal.Traditional intelligent communication
Control system typically uses special image collection chip, and such as SAA7110 video decoding chips are automatically performed the collection of image；
Have the disadvantage that circuit complexity, cost are high, it has not been convenient to software programming and upgrading are carried out to it, and then it gathers the accuracy and speed of image
Also it is restricted, it is bad to non-standard electronic signal adaptability.
The content of the invention
The intelligent communication for realizing IMAQ it is an object of the invention to provide ADC on a kind of use DSP piece controls system
System, to solve the problems mentioned in the above background technology.
To achieve the above object, the present invention provides following technical scheme：
A kind of intelligent communication control system, including input interface, wave filter, decoder module, operational amplifier, separated in synchronization module
And encoder, the input interface connects wave filter and electronic signal respectively, and wave filter is also connected with decoder module, and decoder module is also
Difference concatenation operation amplifier, separated in synchronization module and power module, operational amplifier also pass through isolation module and connect A/D conversions
Module, A/D modular converters are also respectively connected with crystal oscillator and CPLD modules, and CPLD modules are also respectively connected with separated in synchronization module and coding
Device, encoder is also connected with output interface, and the power module includes voltage stabilizing chip U1, resistance R1, electric capacity C1, electric capacity C3, three poles
Pipe VT1, diode VD1 and potentiometer RP1, described resistance R1 one end connects power supply VCC, electric capacity C1, voltage stabilizing chip U1 and drawn respectively
Pin 5, voltage stabilizing chip U1 pins 6, voltage stabilizing chip U1 pins 7, electric capacity C2, resistance R5 and resistance R6, the resistance R6 other ends connect respectively
Triode VT1 emitter stages and diode VD1 negative poles are connect, diode VD1 positive poles connect voltage stabilizing chip U1 pins 8, and resistance R5 is another
End connects resistance R4 and triode VT2 base stages, resistance R4 other ends connection voltage stabilizing chip U1 pins 9, triode VT2 transmittings respectively
Pole connecting triode VT1 base stages, triode VT1 colelctor electrodes difference connecting triode VT2 colelctor electrodes, output end vo, diode VD2
Negative pole, electric capacity C3 and resistance R2, it is another that the resistance R2 other ends connect the electric capacity C1 other ends, diode VD3 negative poles, resistance R1 respectively
End, potentiometer RP1 one end and potentiometer RP1 slide plates, the potentiometer RP1 other ends connect respectively resistance R3, the electric capacity C3 other ends and
Diode VD2 positive poles, the resistance R3 other ends connect voltage stabilizing chip U1 pins 1 and the electric capacity C2 other ends, the diode VD3 respectively
Positive pole connection voltage stabilizing chip U1 pins 2；The voltage stabilizing chip U1 uses SM9100.
It is used as further scheme of the invention：The wave filter uses TDA9181.
It is used as further scheme of the invention：The decoder module uses TDA9143.
It is used as further scheme of the invention：The encoder uses TMS320C6416T.
It is used as further scheme of the invention：The separated in synchronization module uses LM1881.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention realizes IMAQ using ADC on DSP piece,
Need not specialty video decoding chip, with circuit is simple, cost is low, easy maintenance and upgrading the characteristics of, it is often more important that
It is adapted to the collection of various criterion electronic signal, when building data collecting system with DSP and CPLD, it is not necessary to external professional
Image collection chip, it is to avoid complicated hardware design, while there is provided enough disposal abilities；Other power module stability
It is high, it is possible to increase the reliability of system.
Brief description of the drawings
Fig. 1 is the structured flowchart of intelligent communication control system；
Fig. 2 is the circuit diagram of isolation module in intelligent communication control system.
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 every 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.
Referring to Fig. 1, in the embodiment of the present invention, a kind of intelligent communication control system, including input interface, wave filter, solution
Code module, operational amplifier, separated in synchronization module and encoder, the input interface connect wave filter and electronic signal respectively,
Wave filter is also connected with decoder module, and decoder module is also respectively connected with operational amplifier, separated in synchronization module and power module, computing
Amplifier also connects A/D modular converters by isolation module, and A/D modular converters are also respectively connected with crystal oscillator and CPLD modules, CPLD
Module is also respectively connected with separated in synchronization module and encoder, and encoder is also connected with output interface, and the power module includes voltage stabilizing
Chip U1, resistance R1, electric capacity C1, electric capacity C3, triode VT1, diode VD1 and potentiometer RP1, resistance R1 one end difference
Connect power supply VCC, electric capacity C1, voltage stabilizing chip U1 pins 5, voltage stabilizing chip U1 pins 6, voltage stabilizing chip U1 pins 7, electric capacity C2, electricity
Hinder R5 and resistance R6, resistance R6 other ends difference connecting triode VT1 emitter stages and diode VD1 negative poles, diode VD1 positive poles
Voltage stabilizing chip U1 pins 8 are connected, the resistance R5 other ends connect resistance R4 and triode VT2 base stages respectively, and the resistance R4 other ends connect
Voltage stabilizing chip U1 pins 9 are connect, triode VT2 emitter stage connecting triode VT1 base stages, triode VT1 colelctor electrodes connect three respectively
Pole pipe VT2 colelctor electrodes, output end vo, diode VD2 negative poles, electric capacity C3 and resistance R2, the resistance R2 other ends connect electric capacity respectively
The C1 other ends, diode VD3 negative poles, the resistance R1 other ends, potentiometer RP1 one end and potentiometer RP1 slide plates, potentiometer RP1 are another
One end connects resistance R3, the electric capacity C3 other ends and diode VD2 positive poles respectively, and the resistance R3 other ends connect voltage stabilizing chip U1 respectively
Pin 1 and the electric capacity C2 other ends, the diode VD3 positive poles connection voltage stabilizing chip U1 pins 2；The voltage stabilizing chip U1 is used
SM9100.Wave filter uses TDA9181.Decoder module uses TDA9143.Encoder uses TMS320C6416T.Separated in synchronization
Module uses LM1881.
The present invention operation principle be：Electronic signal first to acquisition synchronizes Signal separator, by what is separated
Synchronizing signal is connected to CPLD modules.Electronic signal is connected to after the pretreatments such as clamping, amplitude adjustment
TMS320F2812 ADC inputs.TMS320F2812 is exported the result of ADC on its piece to CPLD modules by XINTF,
Video brightness signal is transferred to image processor by CPLD modules according to the sequential relationship for the synchronizing signal isolated by HPI
TMS320C6416T carries out image procossing.
Include video brightness signal, chroma video signal, video synchronization signal in analog electronic signal.Electronic signal
Peak-to-peak value is 1V, and its sync signal level is less than zero level, and the ADC ranges that TMS320F2812 is used is 0~3V, because
This is before Video Quality Metric, it is necessary to carry out the pretreatments such as Y/C separation, separated in synchronization, clamping, amplitude amplification to it.
Y/C is separated and clamping：The system carries out Y/C separation using TDA9181 and TDA9143 chips, and TDA9181 is
Multi-standard dynamic comb filter, is made up of delay, adder, subtracter, bandpass filter, supports PALB, G, H, D, I, M, N
And the comb of NTSC M standards is whole, Y/C separation can be carried out for the electronic signal of its related standard, TDA9181 can also be to input
Signal carries out clamping.TDA9143 is a kind of PAL/NTSC/SECAM decoder modules by I2C bus marcos, Ke Yiwei
TDA9181 provides the SAND signal and color subcarrier frequency signal required for Y/C separation.
Operational amplifier：Because the peak-to-peak value of electronic signal is 1V, and TMS320F2812 ADC ranges are 0~3V, institute
With in order to preferably carry out video sampling, it is necessary to amplify 3 times to electronic signal, the AD8066 that system is used is high pressure, high speed, low
The single channel and two-way operational amplifier, its differential gain error and differential phase error point of the track to track output of power consumption and high current
Not Wei 0.01% and the flatness of 0.02%, 7MHz bandwidth be 0.1dB, be especially suitable for video buffer application.
Separated in synchronization module：Separated in synchronization use NS companies LM1881 chips, LM1881 can from peak-to-peak value be 0.5~
2V PAL, NTSC and SECAM electronic signal isolates various synchronizing signals in addition, LM1881 applies also for non-standard electronics
The separated in synchronization of signal.
A/D modular converters：TMS320F2812 is 32 fixed point programmable processor chips, and highest frequency is 150MHz, can
To be easily connected with other processors, 12 ADC highest sample strips are wide up to 12.5MHz on piece, possess equivalent to 16 grades
FIFO, enables ADC on piece to reach upper limit operation speed, realizes and 1 data is gathered per 80ns.In addition, TMS320F2812 can be square
Just carry out software programming, to adapt to the electronic signal of various criterion, therefore uses TMS320F2812 to be used as AD conversion.Will input
The analog electronic signals of PAL/NTSC standards carried out by TDA9181 and TDA9143 after Y/C separation and clamping, all the way
Become data signal to TMS320F2812, synchronizing signal is isolated in another road to LM1881.
View data after TMS320F2812 is gathered is transmitted to CPLD modules by its XINTF；LM1881 is isolated
Odd even field signal and composite synchronizing signal also give CPLD modules and carry out logic control, by CPLD modules according to odd even field signal and
Composite synchronizing signal determines collection odd field image or even field picture, or the complete image of one frame of collection.
When field sync signal arrives, CPLD modules are collection odd field image or even field figure according to parity field signal deciding
Picture, or the complete image of one frame of collection；When composite synchronizing signal arrives, it is which that CPLD modules, which judge,.CPLD modules
TMS320F2812 collection can be controlled according to these logical sequences, and provides synchronous sequence to the image processor extended out,
User can also according to these synchronizing signals are handled the need for oneself, such as replaced with the image processor extended out CPLD modules come
Judge row, the field of image.
Fig. 2 is power module circuitry figure, and voltage stabilizing chip U1 5 pin are capacitance-resistance common port, will when the pin connects high level
The pin of U1 output ends 9 is set to be constantly in low level, the signal is added to through resistance R4 and opened by VT1 and the VT2 high-power darlington constituted
Guan Guan, is turned it on, so that VT1 colelctor electrodes have voltage output, the voltage is supplied to output end vo to export all the way, another road warp
Resistance R2 feeds back to diode VD3 negative poles.
When occur certain reason make VT1 pipe collectors export voltage rise when, the voltage fed back to through R2 at VD3 negative poles
Also by sage's lid, make VD3 by Zener breakdown, and then U1 2 pin voltages is raised generation protection act, U1 9 pin is changed into high
Level, so that VT1 ends, VT1 on off state will be such that voltage output end Vo maintains in the range of certain numerical value.
VD2 is fly-wheel diode, and for protecting VT1, resistance R6 is overcurrent sample resistance, once flow through VT1 emitter stages
When electric current is excessive, overcurrent protection is carried out by U1 8 pin, regulation RP1 can control the size of output end vo voltage.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the claim involved by limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (5)
1. a kind of intelligent communication control system, including input interface, wave filter, decoder module, operational amplifier, separated in synchronization mould
Block and encoder, it is characterised in that the input interface connects wave filter and electronic signal respectively, wave filter is also connected with decoding mould
Block, decoder module is also respectively connected with operational amplifier, separated in synchronization module and power module, and operational amplifier also passes through isolation mode
Block connects A/D modular converters, and A/D modular converters are also respectively connected with crystal oscillator and CPLD modules, and CPLD modules are also respectively connected with synchronization
Separation module and encoder, encoder are also connected with output interface, and the power module includes voltage stabilizing chip U1, resistance R1, electric capacity
C1, electric capacity C3, triode VT1, diode VD1 and potentiometer RP1, described resistance R1 one end connects power supply VCC, electric capacity respectively
C1, voltage stabilizing chip U1 pins 5, voltage stabilizing chip U1 pins 6, voltage stabilizing chip U1 pins 7, electric capacity C2, resistance R5 and resistance R6, resistance
The R6 other ends distinguish connecting triode VT1 emitter stages and diode VD1 negative poles, and diode VD1 positive poles connection voltage stabilizing chip U1 draws
Pin 8, the resistance R5 other ends connect resistance R4 and triode VT2 base stages, resistance R4 other ends connection voltage stabilizing chip U1 pins respectively
9, triode VT2 emitter stage connecting triode VT1 base stages are triode VT1 colelctor electrodes difference connecting triode VT2 colelctor electrodes, defeated
Go out to hold Vo, diode VD2 negative poles, electric capacity C3 and resistance R2, resistance the R2 other end to connect the electric capacity C1 other ends, diode respectively
VD3 negative poles, the resistance R1 other ends, potentiometer RP1 one end and potentiometer RP1 slide plates, the potentiometer RP1 other ends connect resistance respectively
R3, the electric capacity C3 other ends and diode VD2 positive poles, the resistance R3 other ends connect voltage stabilizing chip U1 pins 1 respectively and electric capacity C2 is another
One end, the diode VD3 positive poles connection voltage stabilizing chip U1 pins 2；The voltage stabilizing chip U1 uses SM9100.
2. intelligent communication control system according to claim 1, it is characterised in that the wave filter uses TDA9181.
3. intelligent communication control system according to claim 1, it is characterised in that the decoder module uses TDA9143.
4. intelligent communication control system according to claim 1, it is characterised in that the encoder is used
TMS320C6416T。
5. intelligent communication control system according to claim 1, it is characterised in that the separated in synchronization module is used
LM1881。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710459772.5A CN107277297A (en) | 2017-06-16 | 2017-06-16 | A kind of intelligent communication control system |
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| CN201710459772.5A CN107277297A (en) | 2017-06-16 | 2017-06-16 | A kind of intelligent communication control system |
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| CN107277297A true CN107277297A (en) | 2017-10-20 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205427684U (en) * | 2016-03-07 | 2016-08-03 | 何小平 | Intelligence constant voltage power supply control circuit |
| CN106412382A (en) * | 2016-11-20 | 2017-02-15 | 广西大学 | Electronic information signal processing system |
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2017
- 2017-06-16 CN CN201710459772.5A patent/CN107277297A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205427684U (en) * | 2016-03-07 | 2016-08-03 | 何小平 | Intelligence constant voltage power supply control circuit |
| CN106412382A (en) * | 2016-11-20 | 2017-02-15 | 广西大学 | Electronic information signal processing system |
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