CN105761473A - Multi-channel data acquisition system capable of reducing noise - Google Patents
Multi-channel data acquisition system capable of reducing noise Download PDFInfo
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- CN105761473A CN105761473A CN201610159401.0A CN201610159401A CN105761473A CN 105761473 A CN105761473 A CN 105761473A CN 201610159401 A CN201610159401 A CN 201610159401A CN 105761473 A CN105761473 A CN 105761473A
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
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Abstract
The invention relates to a multi-channel data acquisition system capable of reducing noise. The system comprises a plurality of sensors, a plurality of filters, a multi-channel analog switch, a sampling and holding module, an A/D converter, a preprocessing unit and an industrial personal computer, wherein each sensor is connected with the corresponding filter, the filters are connected with the multi-channel analog switch connected with the sampling and holding module, the sampling and holding module is connected with the A/D converter connected with the preprocessing unit, and the preprocessing unit transmits data to the industrial personal computer. With the adoption of the multi-channel synchronous data acquisition system, signals of all channels at the same moment can be acquired, and the data acquisition rate is high; the sampling and holding module is arranged, digital signals after A/D conversion can correctly reflect original analog signals, unrequired frequency components in the signals are removed by the filters, and the signal-to-noise ratio of analog input signals is increased.
Description
Technical field
The present invention relates to data acquisition technology field, a kind of specifically can the multi-path data acquiring system of noise reduction.
Background technology
Data acquisition technology is widely used in the fields such as communication, radar, Aero-Space, industry.Along with developing rapidly of microelectric technique and computer technology, the performance of data collecting system is improving constantly, and function is in continuous enhancing.In modern signal processing system, in order to analyze system better, generally require while gathering key signal and synchronously gather some coherent signals.Previous multichannel time-sharing multiplex data collecting system can only realize circle collection multiple signals, and can not realize gathering the signal of each passage of synchronization, and additionally the speed of data acquisition neither be significantly high.Sensor and other device would generally produce noise, and the existence of noise is the degradation of signal.
Summary of the invention
Not enough for above-mentioned prior art, the present invention provide a kind of can the multi-path data acquiring system of noise reduction.
Multi-path data acquiring system provided by the invention is achieved through the following technical solutions:
A kind of can the multi-path data acquiring system of noise reduction, it is characterized in that: include multiple sensor, multiple wave filter, multiway analog switch, sampling maintenance module, A/D converter, pretreatment unit, industrial computer, described each sensor connects with corresponding wave filter respectively, described wave filter connects multiway analog switch, described multiway analog switch connects sampling and keeps module, described sampling keeps module to connect A/D converter, described A/D converter connects pretreatment unit, and described pretreatment unit sends data to industrial computer.
Described pretreatment unit is made up of processor, converter, wave filter.
Described wave filter is frequency overlapped-resistable filter.
The invention has the beneficial effects as follows: adopt multi-channel synchronous data acquisition system, it may be achieved gather the signal of each passage of synchronization, and the speed of data acquisition is high；Sampling is set and keeps module, it is ensured that the digital signal after A/D changes can correctly react original analogue signal；Adopt wave filter to remove unwanted frequency composition in signal, improve the signal to noise ratio of analog input signal.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
Following by embodiment, technical scheme is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those skilled in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
As shown in Figure 1 a kind of can the multi-path data acquiring system of noise reduction, module, A/D converter, pretreatment unit, industrial computer is kept including multiple sensors, multiple wave filter, multiway analog switch, sampling, described each sensor connects with corresponding wave filter respectively, described wave filter connects multiway analog switch, described multiway analog switch connects sampling and keeps module, described sampling keeps module to connect A/D converter, described A/D converter connects pretreatment unit, and described pretreatment unit sends data to industrial computer.
As preferably, described pretreatment unit is made up of processor, converter, wave filter.
As preferably, described wave filter is frequency overlapped-resistable filter.
Embodiment described above only represents embodiments of the present invention, and it describes comparatively concrete and detailed, but can not be interpreted as limitation of the scope of the invention.It should be pointed out that, for a person skilled in the art, without departing from the inventive concept of the premise, it is also possible to making some deformation and improvement, these broadly fall into scope.
Claims (3)
1. one kind can the multi-path data acquiring system of noise reduction, it is characterized in that: include multiple sensor, multiple wave filter, multiway analog switch, sampling maintenance module, A/D converter, pretreatment unit, industrial computer, described each sensor connects with corresponding wave filter respectively, described wave filter connects multiway analog switch, described multiway analog switch connects sampling and keeps module, described sampling keeps module to connect A/D converter, described A/D converter connects pretreatment unit, and described pretreatment unit sends data to industrial computer.
2. according to claim 1 a kind of can the multi-path data acquiring system of noise reduction, it is characterised in that: described pretreatment unit is made up of processor, converter, wave filter.
3. according to claim 1 a kind of can the multi-path data acquiring system of noise reduction, it is characterised in that: described wave filter is frequency overlapped-resistable filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610159401.0A CN105761473A (en) | 2016-03-21 | 2016-03-21 | Multi-channel data acquisition system capable of reducing noise |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610159401.0A CN105761473A (en) | 2016-03-21 | 2016-03-21 | Multi-channel data acquisition system capable of reducing noise |
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| CN105761473A true CN105761473A (en) | 2016-07-13 |
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| CN201610159401.0A Pending CN105761473A (en) | 2016-03-21 | 2016-03-21 | Multi-channel data acquisition system capable of reducing noise |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102201014A (en) * | 2011-05-24 | 2011-09-28 | 清华大学 | Multi-channel data collection unit |
| CN202710975U (en) * | 2012-05-31 | 2013-01-30 | 上海仪器仪表研究所 | Data acquisition device |
| CN203455827U (en) * | 2013-08-05 | 2014-02-26 | 成都飞逸计算机服务有限公司 | Multi-channel data acquisition system applied to industrial production |
| CN203673078U (en) * | 2013-11-29 | 2014-06-25 | 成都飞逸计算机服务有限公司 | Earthquake signal acquisition device with parallel acquisition channels |
| CN204155439U (en) * | 2014-09-22 | 2015-02-11 | 江苏国电南自海吉科技有限公司 | A kind of multi-channel high-accuracy data acquisition unit |
| CN204856857U (en) * | 2015-07-28 | 2015-12-09 | 张海丽 | Multichannel analog data collection system |
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2016
- 2016-03-21 CN CN201610159401.0A patent/CN105761473A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102201014A (en) * | 2011-05-24 | 2011-09-28 | 清华大学 | Multi-channel data collection unit |
| CN202710975U (en) * | 2012-05-31 | 2013-01-30 | 上海仪器仪表研究所 | Data acquisition device |
| CN203455827U (en) * | 2013-08-05 | 2014-02-26 | 成都飞逸计算机服务有限公司 | Multi-channel data acquisition system applied to industrial production |
| CN203673078U (en) * | 2013-11-29 | 2014-06-25 | 成都飞逸计算机服务有限公司 | Earthquake signal acquisition device with parallel acquisition channels |
| CN204155439U (en) * | 2014-09-22 | 2015-02-11 | 江苏国电南自海吉科技有限公司 | A kind of multi-channel high-accuracy data acquisition unit |
| CN204856857U (en) * | 2015-07-28 | 2015-12-09 | 张海丽 | Multichannel analog data collection system |
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Application publication date: 20160713 |