CN108958135A - A kind of quickly accurate information collection intelligence control system - Google Patents
A kind of quickly accurate information collection intelligence control system Download PDFInfo
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- CN108958135A CN108958135A CN201810943876.8A CN201810943876A CN108958135A CN 108958135 A CN108958135 A CN 108958135A CN 201810943876 A CN201810943876 A CN 201810943876A CN 108958135 A CN108958135 A CN 108958135A
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- chip
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- information collection
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24215—Scada supervisory control and data acquisition
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Complex Calculations (AREA)
Abstract
The invention discloses a kind of quickly accurate information collection intelligence control systems, including master control plate, the master control plate includes dsp chip, fpga chip and AD conversion chip, the dsp chip is connect with fpga chip signal, the FPGA is connect with AD conversion chip signal, the dsp chip is connect by CAN interface with BMS signal, and the dsp chip is connect by RS485 communication interface with person-computer union signal.The present invention quickly can accurately acquire information, and due to signal processing be it is programmable, program can be adjusted constantly, be corrected, and the present invention has sizable flexibility in processing data and in terms of improving system performance.
Description
Technical field
The invention belongs to information acquiring technology fields, and in particular to a kind of quickly accurate information collection intelligent control system
System.
Background technique
Information collection refer to it is inedited produce the work prepared in terms of information resources, including to information collection and
Processing.It is direct basis and the important evidence of Subject Selection.Information collection works the extension of the last one step, at selected topic plan
The beginning drawn.
Information collection intelligence control system is built-up based on Web information mining engine, it can be when shortest
It is interior that newest information collection is got off, and after carrying out classification and unified format, information is issued in time within first time
It is gone on to the website of oneself.To improve information timeliness and save or reduce workload.Existing information collection intelligent control
System is not quickly accurate enough, and is not easy to adjustment, amendment, and flexibility is poor.
For this purpose, we provide a kind of quickly accurate information collection intelligence control system.
Summary of the invention
The purpose of the present invention is to provide a kind of quickly accurate information collection intelligence control systems, quickly can accurately adopt
Collect information, and due to signal processing be it is programmable, program can be adjusted constantly, be corrected, and the present invention is in processing data and raising
There is sizable flexibility, to solve to propose the problems of the prior art in above-mentioned background technique in terms of system performance.
To achieve the above object, present invention employs following technical solutions:
A kind of quickly accurate information collection intelligence control system, including master control plate, the master control plate include DSP core
Piece, fpga chip and AD conversion chip, the dsp chip are connect with fpga chip signal, and the FPGA and AD conversion chip are believed
Number connection, the dsp chip are connect by CAN interface with BMS signal, the dsp chip pass through RS485 communication interface with it is man-machine
The connection of interface touch screen signal.
Preferably, the dsp chip model DSP C2000 series TMS320F28335 integrated chip.
Preferably, the fpga chip model EP1C12Q240I8 integrated chip.
Preferably, the AD conversion chip model AD7606 integrated chip.
Preferably, Fingerprint Lock under pressure-sensitive screen is provided on the person-computer union.
A kind of quickly accurate information collection intelligence control system proposed by the present invention, compared with prior art, have with
Lower advantage: the present invention quickly can accurately acquire information, and due to signal processing be it is programmable, program can adjust constantly,
Amendment, the present invention have sizable flexibility in processing data and in terms of improving system performance.
Detailed description of the invention
Fig. 1 is the schematic diagram of dsp chip of the invention；
Fig. 2 is the schematic diagram of fpga chip of the invention；
Fig. 3 is the schematic diagram of AD conversion chip of the invention；
Fig. 4 is gain calculation flow chart of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Herein
Described specific embodiment is only used to explain the present invention, is not intended to limit the present invention.Based on the embodiments of the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, belongs to this hair
The range of bright protection.
The present invention provides a kind of quickly accurate information collection intelligence control systems as shown in Figs. 1-3, including master control
Plate, the master control plate include dsp chip, fpga chip and AD conversion chip, and the dsp chip and fpga chip signal connect
It connects, the FPGA is connect with AD conversion chip signal, and the dsp chip is connect by CAN interface with BMS signal, the DSP core
Piece is connect by RS485 communication interface with person-computer union signal.
Specifically, the dsp chip model DSP C2000 series TMS320F28335 integrated chip, which is one
The highly developed chip for industry acquisition data of money mainly carries out real-time calculation processing to signal and generates corresponding control
Signal processed and measure, due to signal processing be it is programmable, program can be adjusted constantly, be corrected, and such digital processing unit is being located
Just there is sizable flexibility in terms of reason data and raising system performance.
Specifically, the fpga chip model EP1C12Q240I8 integrated chip, the chip are a highly developed
For the chip of industry acquisition data, it is main complete to store after effective sampled data, sampling to the processing of sampled data with
And the timing control of interface circuit.
Specifically, the AD conversion chip model AD7606 integrated chip, which is that a 16 bit port is synchronized and adopted
Sample analog-digital chip is responsible for analog electrical signal to be quickly converted into the digital signal that DSP is capable of handling.
Specifically, being provided with Fingerprint Lock under pressure-sensitive screen on the person-computer union, it is ensured that the information collection intelligence
It can control the safety of system.
Turn in use, AD7606 chip carries out modulus by the timing that FPGA series EP1C12Q240I8 integrated chip issues
It changes, the Current Voltage value etc. of acquisition is passed in DSP C2000 series EP1C12Q240I8 integrated chip, at this time DSP C2000
Serial TMS320F28335 integrated chip is by the data in programming acquisition FPGA series EP1C12Q240I8 integrated chip, adopting
The data information collected is sent on person-computer union.
After dsp chip data acquisition process, it would be desirable to need to extract some data and calculate biasing and gain, come
Calibrate AD conversion chip sampling metering.It is all to add data manually and manually to curve matching in entire checking procedure.In hand
(1) elapsed time is too long in dynamic operating process, and due to the fault of itself in (2) calculating process, the data drawn have deviation.Institute
It automatically to obtain data to collecting to write a program and extracts fitting, biasing and gain be calculated, to reduce the time and need not
Obtain error.
The present invention provides the program flow diagrams of such as Fig. 4.
Calibration condition
Extract data: power network current A, B, C three-phase
Device electric current A, B, C three-phase
Network voltage A, B, C three-phase
DC voltage is worth above and below
Find out data: biasing (according to)
Gain: (extracting data-biasing) * gain=voltage (electric current) virtual value
Data acquisition: (1) sampling thheorem
In order to guarantee the validity of the digital signal obtained after sampling, sampling thheorem need to be followed.
If a continuous analog signal x (t), frequency spectrum is x (f), and highest frequency is less than fh, with the week for being T sampling period
Phase property unit impact pulse pair it into δT(t) when line sampling, sampled signal is that a series of ask is divided into T seconds impulses, uses xs
(t)=∑ x (kT) indicates sampled signal sequence, then has
xs(t)=x (t) δT(t) (1)
With ΔΩ(f) δ is indicatedT(t) frequency spectrum.
Use Xs(f) x is indicateds(t) frequency spectrum is obtained according to frequency domain convolution theorem, can be obtained:
Xs(f)=X (f) * ΔΩ(f) (3)
Formula 2 will be substituted into formula 3, obtained:
By formula 4 it is found that the frequency spectrum of sampled signal is that original analog signal frequency spectrum X (f) is shifted nf on the frequency axissAs a result,
So the frequency spectrum X of sampled signals(f) be by spacing frequency be fsOriginal signal frequency spectrum X (f) superimposed form.Because of analog signal
The highest frequency of x (t) is less than fh, so if in formula 4 sampled signal frequency interval fs> 2fh, then Xs(f) include in is every
It is not overlapped between a original analog signal frequency spectrum X (f), it can be from sampled signal frequency spectrum Xs(f) frequency of original analog signal is isolated in
It composes X (f), that is to say, that original signal can be restored from sampled signal.
(2) Digital Signal Processing process
It after having obtained multichannel initial data, needs to carry out data processing to it, finally obtains each channel analogy letter
Number frequency parameter.The frequency for calculating digital signal need to use discrete fourier transform algorithm, and length is the digital signal x (n) of N
Discrete Fourier transform X (m) are as follows:
In formula 1, X (m) indicates the frequency spectrum of digital signal x (n), and the inverse discrete fourier transform of X (m) is x (n),
The discrete Fourier transform X (m) for calculating N point x (n) needs n times complex multiplication and N (N-1) secondary complex addition.When
When N is very big, calculation amount is just very huge, it is difficult to carry out " real-time " calculate to input data.As data length N=2rWhen, it can be used
Fast Fourier Transform (FFT) (FFT) reduces operand.
In formula 1, ω=l is enabled-j2π/N, then
Work as N=2rWhen, n and m are indicated with binary number form, are had
N=2r-1nr-1+2r-2nr-2+....+n0
M=2r-1mr-1+2r-2mr-2+....+m0 (4)
So formula 3 can be rewritten as
Wherein,
P=(2r-1nr-1+2r-2nr-2+....+n0)*(2r-1mr-1+2r-2mr-2+....+m0) (6)
Formula 5 is the calculation formula of base 2FFT, and complex addition number is Nr, and complex multiplication number is Nr/2 times, operand
It is greatly decreased compared to formula 1, so calculating the frequency spectrum of each channel digital signal using Fast Fourier Transform (FFT) (FFT).
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (5)
1. a kind of quickly accurate information collection intelligence control system, including master control plate, it is characterised in that: the master control plate
Including dsp chip, fpga chip and AD conversion chip, the dsp chip is connect with fpga chip signal, and the FPGA and AD turn
Chip signal connection is changed, the dsp chip is connect by CAN interface with BMS signal, and the dsp chip is connect by RS485 communication
Mouth is connect with person-computer union signal.
2. a kind of quickly accurate information collection intelligence control system according to claim 1, it is characterised in that: described
Dsp chip model DSP C2000 series TMS320F28335 integrated chip.
3. a kind of quickly accurate information collection intelligence control system according to claim 1, it is characterised in that: described
Fpga chip model EP1C12Q240I8 integrated chip.
4. a kind of quickly accurate information collection intelligence control system according to claim 1, it is characterised in that: the AD
Conversion chip model AD7606 integrated chip.
5. a kind of quickly accurate information collection intelligence control system according to claim 1, it is characterised in that: the people
Fingerprint Lock under pressure-sensitive screen is provided on the touch screen of machine interface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810943876.8A CN108958135A (en) | 2018-08-18 | 2018-08-18 | A kind of quickly accurate information collection intelligence control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810943876.8A CN108958135A (en) | 2018-08-18 | 2018-08-18 | A kind of quickly accurate information collection intelligence control system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004036395A1 (en) * | 2002-10-17 | 2004-04-29 | Rectuson Co., Ltd. | Stand-alone apparatus for data acquisition and signal processing |
| CN103778760A (en) * | 2012-10-17 | 2014-05-07 | 成都龙冠科技实业有限公司 | Wireless data collector based on DSP and FPGA |
| CN105353322A (en) * | 2015-11-20 | 2016-02-24 | 青岛中科软件股份有限公司 | High-precision digital power supply data acquisition system based on FPGA and DSP |
| CN205210623U (en) * | 2015-12-20 | 2016-05-04 | 天津市南开太阳高技术发展有限公司 | Analog data acquisition controller based on DSP+ARM industry treater and FPGA |
| CN107066200A (en) * | 2017-03-14 | 2017-08-18 | 北京航天自动控制研究所 | A kind of collecting method and data collecting system based on FPGA |
-
2018
- 2018-08-18 CN CN201810943876.8A patent/CN108958135A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004036395A1 (en) * | 2002-10-17 | 2004-04-29 | Rectuson Co., Ltd. | Stand-alone apparatus for data acquisition and signal processing |
| CN103778760A (en) * | 2012-10-17 | 2014-05-07 | 成都龙冠科技实业有限公司 | Wireless data collector based on DSP and FPGA |
| CN105353322A (en) * | 2015-11-20 | 2016-02-24 | 青岛中科软件股份有限公司 | High-precision digital power supply data acquisition system based on FPGA and DSP |
| CN205210623U (en) * | 2015-12-20 | 2016-05-04 | 天津市南开太阳高技术发展有限公司 | Analog data acquisition controller based on DSP+ARM industry treater and FPGA |
| CN107066200A (en) * | 2017-03-14 | 2017-08-18 | 北京航天自动控制研究所 | A kind of collecting method and data collecting system based on FPGA |
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Application publication date: 20181207 |