CN207216611U - A kind of real-time digital convolution module - Google Patents
A kind of real-time digital convolution module Download PDFInfo
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- CN207216611U CN207216611U CN201721239802.3U CN201721239802U CN207216611U CN 207216611 U CN207216611 U CN 207216611U CN 201721239802 U CN201721239802 U CN 201721239802U CN 207216611 U CN207216611 U CN 207216611U
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Abstract
The utility model discloses a kind of real-time digital convolution module, including：Input port, the first anti-aliasing filter unit, AD conversion unit, central processing unit, digital analog converter, the second anti-aliasing filter unit, output port, earth terminal, power module, onboard clock；Wherein, the input port and the earth terminal are connected with the first anti-aliasing filter unit, the first anti-aliasing filter unit is connected with the AD conversion unit, the AD conversion unit is connected with the central processing unit, the central processing unit is connected with the digital analog converter, the onboard clock respectively, the digital analog converter is connected with the second anti-aliasing filter unit, the second anti-aliasing filter unit is connected with the output port, the earth terminal, and the power module is connected with the central processing unit, the earth terminal.The utility model can improve the real-time of convolutional calculation, simplify power source design, reduce construction cycle and material cost.
Description
Technical field
It the utility model is related to signal processing and detection technical field, more particularly to a kind of digital convolution module.
Background technology
In signal processing and detection field, convolution is a kind of basic arithmetic element, realizes that the mode of convolution is main at present
There are following two methods：Data are sent to computer by data collecting card, carry out off-line operation on computers by the first,
The shortcomings that this method is poor real, can processing frequency it is low；Second, using FPGA (field programmable gate array), DSP (numbers
Word signal processor) etc. Digital processing device realize convolution, but need make PCB (printed circuit board), then write program, its
Construction cycle is grown, and material cost is high, due to realizing the FPGA of convolutional calculation, DSP, ADC (analog-digital converter) these electronics
Component causes the complicated power source design of whole system needs, it is necessary to a variety of different voltages.
Utility model content
For in the prior art the defects of, the utility model provides a kind of real-time digital convolution module, it is possible to increase convolution
The real-time of calculating, simplify power source design, reduce construction cycle and material cost.
The utility model provides a kind of real-time digital convolution module, including：Input port, the first anti-aliasing filter list
Member, AD conversion unit, central processing unit, digital analog converter, the second anti-aliasing filter unit, output port, earth terminal, power supply
Module, onboard clock；
Wherein, the input port and the earth terminal are connected with the first anti-aliasing filter unit, and described first
Anti-aliasing filter unit is connected with the AD conversion unit, and the AD conversion unit is connected with the central processing unit, institute
State central processing unit to be connected with the digital analog converter, the onboard clock respectively, the digital analog converter is anti-with described second
Aliasing filter unit is connected, and the second anti-aliasing filter unit is connected with the output port, the earth terminal, the power supply
Module is connected with the central processing unit, the earth terminal.
Further, the input port includes：First input port, the second input port；The first input port
For inputting first via analog signal, second input port is used to input the second tunnel analog signal.
Further, the first anti-aliasing filter unit includes：First frequency overlapped-resistable filter, the second anti-aliasing filter
Device；
First frequency overlapped-resistable filter is connected with first input port, anti-aliasing for being carried out to first via analog signal
Processing；
Second frequency overlapped-resistable filter is connected with the second input port, anti-aliasing for being carried out to the second tunnel analog signal
Processing.
Further, the AD conversion unit includes：First analog-digital converter, the second analog-digital converter；
First analog-digital converter is connected with first frequency overlapped-resistable filter, for by first through anti-aliasing processing
Road analog signal is converted to data signal；
Second analog-digital converter is connected with second frequency overlapped-resistable filter, for by second through anti-aliasing processing
Road analog signal is converted to data signal.
Further, the second anti-aliasing filter unit is the 3rd frequency overlapped-resistable filter, for turning through the digital-to-analogue
Analog signal after parallel operation conversion carries out anti-aliasing processing.
Further, the quantity of the output port is one, the simulation after the 3rd frequency overlapped-resistable filter processing
Signal, exported by the output port.
Further, the power module includes power input and DC/DC converters, the power input respectively with
The first anti-aliasing filter unit, the AD conversion unit, the DC/DC converters, the digital analog converter, it is described in
Put clock connection.
Further, the power input access+3.3V power supplys, it is the first anti-aliasing filter unit, the mould
Number converting unit, the digital analog converter and onboard clock power supply, and be the centre by the DC/DC converters
Manage device power supply.
Further, the quantity of the earth terminal is four, including：Be connected with the first anti-aliasing filter unit
One earth terminal and the second earth terminal, the 3rd earth terminal being connected with the second anti-aliasing filter unit, with the power module
4th earth terminal of connection.
As shown from the above technical solution, real-time digital convolution module provided by the utility model, is entered using central processing unit
Row convolutional calculation, improve the real-time of convolutional calculation；Designed using single supply, simplify power source design；Circuit is made without user
Plate and write program, reduce construction cycle and material cost；Interface is simple, easy to operate.
Brief description of the drawings
Fig. 1 shows the structural representation of real-time digital convolution module provided by the utility model.
Embodiment
The embodiment of technical solutions of the utility model is described in detail below in conjunction with accompanying drawing.Following examples are only
For clearly illustrating the technical solution of the utility model, therefore example is only used as, and this practicality can not be limited with this
New protection domain.
It should be noted that unless otherwise indicated, technical term or scientific terminology used in this application should be this reality
The ordinary meaning understood with new one of ordinary skill in the art.
As shown in figure 1, the utility model embodiment provides a kind of real-time digital convolution module, including：Input port, the
One anti-aliasing filter unit, AD conversion unit, central processing unit 4 (CPU), digital analog converter 5 (DAC), the second anti-aliasing filter
Ripple unit, output port 7, earth terminal, power module, onboard clock 9.
Wherein, the input port and the earth terminal are connected with the first anti-aliasing filter unit, and described first
Anti-aliasing filter unit is connected with the AD conversion unit, and the AD conversion unit is connected with the central processing unit 4, institute
State central processing unit to be connected with the digital analog converter 5, the onboard clock 9 respectively, the digital analog converter and described second
Anti-aliasing filter unit is connected, and the second anti-aliasing filter unit is connected with the output port 7, the earth terminal, described
Power module is connected with the central processing unit 4, the earth terminal.
Preferably, the input port includes：First input port 11, the second input port 12；Wherein, described first is defeated
Inbound port 11 is used to input first via analog signal, and second input port 12 is used to input the second tunnel analog signal.
Preferably, the first anti-aliasing filter unit includes：First frequency overlapped-resistable filter 21, the second frequency overlapped-resistable filter
22；Wherein, first frequency overlapped-resistable filter 21 is connected with first input port 11, for resisting to first via analog signal
Aliasing processing；Second frequency overlapped-resistable filter 22 is connected with the second input port 12, for being carried out to the second tunnel analog signal
Anti-aliasing processing.
Preferably, the AD conversion unit includes：First analog-digital converter 31 (ADC), the second analog-digital converter 32；Its
In, first analog-digital converter 31 is connected with first frequency overlapped-resistable filter 21, for by first through anti-aliasing processing
Road analog signal is converted to data signal；Second analog-digital converter 32 is connected with second frequency overlapped-resistable filter 22, is used
In the second tunnel analog signal through anti-aliasing processing is converted into data signal.
Wherein, the central processing unit 4, for carrying out convolutional calculation to the data signal, and result of calculation is transmitted
To the digital analog converter 5.
Wherein, the digital analog converter 5, for the data signal after convolutional calculation to be converted into analog signal, and will turn
Analog signal output after changing is to the second anti-aliasing filter unit.
Preferably, the second anti-aliasing filter unit is the 3rd frequency overlapped-resistable filter 6, for through the digital-to-analogue conversion
Analog signal after device 5 is changed carries out anti-aliasing processing.
Preferably, the quantity of the output port 7 is one, the simulation after the 3rd frequency overlapped-resistable filter 6 processing
Signal, exported by the output port 7.
Preferably, the power module includes power input and DC/DC converters 81, the power input respectively with
First anti-aliasing filter unit, AD conversion unit, DC/DC converters 81, digital analog converter 5, onboard clock 9 connect.
Wherein, the single supply of the power input access+3.3V, it is the first anti-aliasing filter unit, the mould
Number converting unit, the digital analog converter 5 and the onboard clocks 9 are powered, and by the DC/DC converters 81 in described
Central processor 4 is powered.
The digital convolution module also includes four grounded end, being respectively connected with the first anti-aliasing filter unit
First earth terminal and the second earth terminal, the 3rd earth terminal being connected with the second anti-aliasing filter unit, with the power supply mould
4th earth terminal of block connection；Specifically, the first earth terminal is connected with the first frequency overlapped-resistable filter 21, the second earth terminal and second
Frequency overlapped-resistable filter 22 is connected, and the 3rd earth terminal is connected with the 3rd frequency overlapped-resistable filter 6, the 4th earth terminal and DC/DC converters
81 connections.
The operation principle of the digital convolution module is：
First via analog signal enters convolution module from first input port 11, and the second tunnel analog signal is from the second input
Mouth 12 enters convolution module；First via analog signal is after the anti-aliasing processing of the first frequency overlapped-resistable filter 21, into first
Analog-digital converter 31, the second tunnel analog signal is after the anti-aliasing processing of the second frequency overlapped-resistable filter 22, into the second modulus
Converter 32.
First via analog signal is converted to data signal by the first analog-digital converter 31, and the second analog-digital converter 32 is by second
After road analog signal is converted to data signal, the two ways of digital signals is transmitted real-time convolution meter is carried out into central processing unit 4
Calculate；Specifically, central processing unit 4 carries out Fast Fourier Transform (FFT) simultaneously to two ways of digital signals, and two transformation results are multiplied,
And inverse Fourier's Fast transforms are done to product to complete convolution, convolution results are transmitted to digital analog converter 5 afterwards.
Wherein, the principle that central processing unit 4 carries out real-time convolutional calculation is that frequency domain is multiplied equivalent to convolution, this reality
With new embodiment by the way that two-way analog signal is changed to frequency domain from time domain, time domain is gone back to again after being as a result multiplied, to complete two
The real-time convolution of road analog signal.
Digital analog converter 5 is changed to convolution results, and the convolution results of data signal are converted to the volume of analog signal
Product result, and the convolution results after conversion are exported into the 3rd frequency overlapped-resistable filter 6 and handled, the result is led to after processing
Output port 7 is crossed to export.
Based on above content, exemplary embodiment provided by the utility model, it is possible to increase the real-time of convolutional calculation, can
So that convolutional rate is reduced into Millisecond from minute level；Designed using single supply, simplify power-supply system；Definite functions are single,
Circuit board is made without program is write without user, is reduced the development time of user, is decreased material cost；Using mould
The device of block realizes real-time digital convolution of function, and volume is smaller, using more convenient；Only containing include power input, two
Totally eight external pins including signal input part, signal output part and four grounded end, tailored appearance are easy to connect.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type, it all should cover among claim of the present utility model and the scope of specification.
Claims (9)
- A kind of 1. real-time digital convolution module, it is characterised in that including：Input port, the first anti-aliasing filter unit, modulus turn Change unit, central processing unit, digital analog converter, the second anti-aliasing filter unit, output port, earth terminal, power module is built-in Clock；Wherein, the input port and the earth terminal are connected with the first anti-aliasing filter unit, and described first is anti-mixed Folded filter unit is connected with the AD conversion unit, and the AD conversion unit is connected with the central processing unit, in described Central processor is connected with the digital analog converter, the onboard clock respectively, the digital analog converter and described second anti-aliasing Filter unit is connected, and the second anti-aliasing filter unit is connected with the output port, the earth terminal, the power module It is connected with the central processing unit, the earth terminal.
- 2. digital convolution module according to claim 1, it is characterised in that the input port includes：First input end Mouthful, the second input port；The first input port is used to input first via analog signal, and second input port is used for defeated Enter the second tunnel analog signal.
- 3. digital convolution module according to claim 2, it is characterised in that the first anti-aliasing filter unit includes： First frequency overlapped-resistable filter, the second frequency overlapped-resistable filter；First frequency overlapped-resistable filter is connected with first input port, for carrying out anti-aliasing place to first via analog signal Reason；Second frequency overlapped-resistable filter is connected with the second input port, for carrying out anti-aliasing place to the second tunnel analog signal Reason.
- 4. digital convolution module according to claim 3, it is characterised in that the AD conversion unit includes：First mould Number converter, the second analog-digital converter；First analog-digital converter is connected with first frequency overlapped-resistable filter, for by the first via mould through anti-aliasing processing Intend signal and be converted to data signal；Second analog-digital converter is connected with second frequency overlapped-resistable filter, for by the second road mould through anti-aliasing processing Intend signal and be converted to data signal.
- 5. digital convolution module according to claim 1, it is characterised in that the second anti-aliasing filter unit is the 3rd Frequency overlapped-resistable filter, for carrying out anti-aliasing processing to the analog signal after digital analog converter conversion.
- 6. digital convolution module according to claim 5, it is characterised in that the quantity of the output port is one, warp Analog signal after the 3rd frequency overlapped-resistable filter processing, is exported by the output port.
- 7. digital convolution module according to claim 1, it is characterised in that the power module include power input and DC/DC converters, the power input respectively with the first anti-aliasing filter unit, AD conversion unit, described DC/DC converters, the digital analog converter, onboard clock connection.
- 8. digital convolution module according to claim 7, it is characterised in that the single electricity of the power input connection+3.3V Source, the power input are the first anti-aliasing filter unit, the AD conversion unit, the digital analog converter and the institute Onboard clock power supply is stated, and is powered by the DC/DC converters for the central processing unit.
- 9. digital convolution module according to claim 1, it is characterised in that the quantity of the earth terminal is four, including： The first earth terminal and the second earth terminal being connected with the first anti-aliasing filter unit, with the second anti-aliasing filter unit 3rd earth terminal of connection, the 4th earth terminal being connected with the power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721239802.3U CN207216611U (en) | 2017-09-25 | 2017-09-25 | A kind of real-time digital convolution module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721239802.3U CN207216611U (en) | 2017-09-25 | 2017-09-25 | A kind of real-time digital convolution module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207216611U true CN207216611U (en) | 2018-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721239802.3U Active CN207216611U (en) | 2017-09-25 | 2017-09-25 | A kind of real-time digital convolution module |
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| Country | Link |
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| CN (1) | CN207216611U (en) |
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2017
- 2017-09-25 CN CN201721239802.3U patent/CN207216611U/en active Active
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