CN205005029U - Digital filter - Google Patents
Digital filter Download PDFInfo
- Publication number
- CN205005029U CN205005029U CN201520709303.0U CN201520709303U CN205005029U CN 205005029 U CN205005029 U CN 205005029U CN 201520709303 U CN201520709303 U CN 201520709303U CN 205005029 U CN205005029 U CN 205005029U
- Authority
- CN
- China
- Prior art keywords
- model
- chip
- main control
- control chip
- digital filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Feedback Control In General (AREA)
Abstract
The utility model discloses a digital filter, including setting up the main control chip on the base, main control chip's input and incoming signal conversion chip are connected, incoming signal change the chip again with the incoming signal line connection, main control chip's output and DDS signal generator are connected, DDS signal generator again in proper order with output signal conversion chip and output signal line connection, wherein, the main control chip model be STM32F103ZET6, incoming signal changes the chip model and is ADC0807, the DDS signal generator model is AD9110, output signal changes the chip model and is DAC0832, the utility model provides a filter configuration that exists among the prior art complicated, control range is little, and receive the problem that temperature is big.
Description
Technical field
The utility model belongs to digital signal filter technical field, is specifically related to a kind of digital filter.
Background technology
Along with the development of electronic information field, people constantly promote electronic information quality requirement, and it is a stubborn problem that the interference signal how removed in primary signal makes it meet the demands.It is a kind of more more flexible than classical signal transaction module that the present invention intends designing and making, and the broader signal in practical face accurately extracts and processes, and more fully meets the demand of people to electronic information.
Now commercially mostly be the filter that the active components and parts of hardware carry, their complex structure, control range is little, and along with temperature, humidity effect is very huge, even can not work.
Utility model content
The purpose of this utility model is to provide a kind of digital filter, solves that the filter construction that exists in prior art is complicated, control range is little and the problem that temperature influence is large.
The technical scheme that the utility model adopts is, a kind of digital filter, comprise the main control chip be arranged on base, the input of main control chip is connected with input signal conversion chip, input signal conversion chip is connected with input signal cable again, the output of described main control chip is connected with DDS signal generator, and DDS signal generator is connected with output signal conversion chip and output signal line again successively.
Feature of the present utility model is also,
Main control chip model is STM32F103ZET6.
Input signal conversion chip model is ADC0807.
DDS signal generator model is AD9110.
Output signal conversion chip model is DAC0832.
The beneficial effects of the utility model are, a kind of digital filter, digital signal is converted to by analog signal being inputted input signal conversion chip, then import in main control chip, by algorithm filter existing in main control chip, it is processed, then the signal after process is imported in DDS signal generator and carry out modulation and demodulation, the signal obtained converts analog signal to again by output signal conversion chip, main control chip STM32F103ZET6 is used to control, structure is simpler, production cost is low, more importantly-50---70 degree all can normally work, and test specification is large.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of digital filter of the utility model.
In figure, 1. input signal cable, 2. input signal conversion chip, 3. base, 4. main control chip, 5.DDS signal generator, 6. outputs signal conversion chip, 7. output signal line.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
A kind of digital filter of the utility model, structure as shown in Figure 1, comprise setting main control chip 4 on the base 3, the input of main control chip 4 is connected with input signal conversion chip 2, input signal conversion chip 2 is connected with input signal cable 1 again, the output of main control chip 4 is connected with DDS signal generator 5, DDS signal generator 5 is connected with output signal conversion chip 6 and output signal line 7 again successively, wherein, main control chip 4 model is STM32F103ZET6, input signal conversion chip 2 model is ADC0807, DDS signal generator 5 model is AD9110, output signal conversion chip 6 model is DAC0832.
The operation principle of a kind of digital filter of the utility model is:
When input signal is inputted by input signal cable 1, analog signal is converted to digital signal by input signal conversion chip 2, import in main control chip 4, by algorithm filter existing in main control chip 4, it is processed, then the signal after process is imported in DDS signal generator 5 and carry out modulation and demodulation, the signal obtained converts analog signal to again by output signal conversion chip 6, exported by output signal line 7, main control chip STM32F103ZET6 is used to control, structure is simpler, production cost is low, more importantly-50---70 degree all can normally work, and test specification is large.
Conventional information extracts the requirement that only can meet certain customers with transaction module, and be only applicable to part signal, practical face is narrower, be not suitable for spread, more can not apply in a flexible way in multiple occasion, it is practical that the application is intended to research, require high information extraction process structure, make it from flexibility, practicality, the aspects such as precision improve, for the signal of different occasion, only need adjustment modes can adapt to the different demand required, and can coordinate with different software and subsequent treatment device and reach general object, the flexibility of very big raising signal extraction and process and accuracy.
Claims (5)
1. a digital filter, it is characterized in that, comprise the main control chip (4) be arranged on base (3), the input of main control chip (4) is connected with input signal conversion chip (2), input signal conversion chip (2) is connected with input signal cable (1) again, the output of described main control chip (4) is connected with DDS signal generator (5), and DDS signal generator (5) is connected with output signal conversion chip (6) and output signal line (7) again successively.
2. a kind of digital filter according to claim 1, is characterized in that, described main control chip (4) model is STM32F103ZET6.
3. a kind of digital filter according to claim 1, is characterized in that, described input signal conversion chip (2) model is ADC0807.
4. a kind of digital filter according to claim 1, is characterized in that, described DDS signal generator (5) model is AD9110.
5. a kind of digital filter according to claim 1, is characterized in that, described output signal conversion chip (6) model is DAC0832.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520709303.0U CN205005029U (en) | 2015-09-14 | 2015-09-14 | Digital filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520709303.0U CN205005029U (en) | 2015-09-14 | 2015-09-14 | Digital filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205005029U true CN205005029U (en) | 2016-01-27 |
Family
ID=55161898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520709303.0U Expired - Fee Related CN205005029U (en) | 2015-09-14 | 2015-09-14 | Digital filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205005029U (en) |
-
2015
- 2015-09-14 CN CN201520709303.0U patent/CN205005029U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105208275B (en) | A kind of system for supporting to handle in real time in flow data piece | |
| GB2515700A (en) | Processing data representing a physical system | |
| CN204142988U (en) | Optical fingerprint sensor chip module grating | |
| CN202998056U (en) | Pre-emphasis device | |
| CN103258093B (en) | A kind of parameter identification method of the two rate systems based on identification | |
| CN205005029U (en) | Digital filter | |
| CN204101942U (en) | Plant growth environment multiple information detects and display device | |
| CN204131502U (en) | At a high speed, high precision image signal analog to digital conversion circuit | |
| CN107806909B (en) | A kind of impulse type cereal flow transducer signal acquisition and processing apparatus | |
| CN104300981B (en) | At a high speed, high precision image signal analog to digital conversion circuit | |
| CN206460174U (en) | A kind of double-channel multifunctional digital nuclear spectrometer | |
| CN204557139U (en) | A kind of data collecting card | |
| CN206711075U (en) | A kind of four-quadrant analog divider | |
| CN205210617U (en) | Signal collector based on STC12C5A16S2 chip | |
| CN206249425U (en) | The wave image processing apparatus of ocean | |
| CN204425277U (en) | A kind of Gaussian white noise generator | |
| CN203250161U (en) | Structure of main control device of instrument system | |
| CN205176117U (en) | Synchronous sampling circuit | |
| CN102006076A (en) | Analog-digital conversion circuit | |
| CN203825400U (en) | Multifunction interface module for sensor and communication | |
| CN204215164U (en) | A kind of automated warehousing simulator based on ARM | |
| CN204286605U (en) | The rotating temperature validating instrument of a kind of display screen | |
| CN104423608A (en) | Light based projection keyboard | |
| CN220455736U (en) | Automatic voltage regulation executing terminal | |
| CN204244187U (en) | A kind of signal measurement amplifying circuit for flight entertainment computer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160127 Termination date: 20180914 |