CN105652755A - Safe and improved multichannel data collection system - Google Patents
Safe and improved multichannel data collection system Download PDFInfo
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- CN105652755A CN105652755A CN201610159392.5A CN201610159392A CN105652755A CN 105652755 A CN105652755 A CN 105652755A CN 201610159392 A CN201610159392 A CN 201610159392A CN 105652755 A CN105652755 A CN 105652755A
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- converter
- sampling
- analog switch
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- data 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
- G05B19/0425—Safety, monitoring
-
- 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
- G05B2219/26—Pc applications
- G05B2219/2612—Data acquisition interface
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
The invention relates to a safe and improved multichannel data collection system. The system comprises multiple sensors, multiple amplifiers, multiple couplers, a multichannel analog switch, a sampling and holding module, an A/D converter, a preprocessing unit and an industrial personal computer. Each sensor is connected with the corresponding amplifier, the amplifiers are connected with the couplers, the couplers are connected with the multichannel analog switch, the multichannel analog switch is connected with the sampling and holding module, the sampling and holding module is connected with the A/D converter, the A/D converter is connected with the preprocessing unit, and the preprocessing unit transmits data to the industrial personal computer. By the adoption of the multichannel synchronous data collection system, collection of signals at all channels at the same moment can be realized, and the data collection rate is high; since the sampling and holding module is arranged, it is ensured that the digital signals obtained after A/D conversion can correctly reflect original analog signals.
Description
Technical field
The present invention relates to data acquisition technology field, specifically a kind of improvements in security type multi-path data acquiring system.
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. Owing to there being potential difference between data acquisition unit and signal ground, if not carrying out isolation processing, it is possible to form earth-return circuit, cause measurement error. .
Summary of the invention
Not enough for above-mentioned prior art, the present invention provides a kind of improvements in security type multi-path data acquiring system.
A kind of improvements in security type multi-path data acquiring system provided by the invention is achieved through the following technical solutions:
A kind of improvements in security type multi-path data acquiring system, it is characterized in that: include multiple sensor, multiple amplifiers, multiple bonders, multiway analog switch, sampling keeps module, A/D converter, pretreatment unit, industrial computer, described each sensor connects with corresponding amplifier respectively, described amplifier connects bonder, described bonder 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, described pretreatment unit sends data to industrial computer.
Described pretreatment unit is made up of processor, converter, wave filter.
Described bonder is capacity coupler.
The invention has the beneficial effects as follows:
1, multi-channel synchronous data acquisition system is adopted, it may be achieved gather the signal of each passage of synchronization, and the speed of data acquisition is high;
2, sampling is set and keeps module, it is ensured that the digital signal after A/D changes can correctly react original analogue signal;
3, adopt amplifier that signal is amplified, improve resolution;
4, bonder is set, it is to avoid detection system and detected system directly electrically connect, and make system safer, it is to avoid data are by the impact of earth potential and input pattern. .
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.
A kind of improvements in security type multi-path data acquiring system as shown in Figure 1, including multiple sensors, multiple amplifiers, multiple bonders, multiway analog switch, sampling keeps module, A/D converter, pretreatment unit, industrial computer, described each sensor connects with corresponding amplifier respectively, described amplifier connects bonder, described bonder 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, described pretreatment unit sends data to industrial computer.
As preferably, described pretreatment unit is made up of processor, converter, wave filter.
Further, described bonder is capacity coupler.
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. an improvements in security type multi-path data acquiring system, it is characterized in that: include multiple sensor, multiple amplifiers, multiple bonders, multiway analog switch, sampling keeps module, A/D converter, pretreatment unit, industrial computer, described each sensor connects with corresponding amplifier respectively, described amplifier connects bonder, described bonder 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, described pretreatment unit sends data to industrial computer.
2. a kind of improvements in security type multi-path data acquiring system according to claim 1, it is characterised in that: described pretreatment unit is made up of processor, converter, wave filter.
3. a kind of improvements in security type multi-path data acquiring system according to claim 1, it is characterised in that: described bonder is capacity coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610159392.5A CN105652755A (en) | 2016-03-21 | 2016-03-21 | Safe and improved multichannel data collection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610159392.5A CN105652755A (en) | 2016-03-21 | 2016-03-21 | Safe and improved multichannel data collection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105652755A true CN105652755A (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610159392.5A Pending CN105652755A (en) | 2016-03-21 | 2016-03-21 | Safe and improved multichannel data collection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105652755A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108577838A (en) * | 2018-05-17 | 2018-09-28 | 杭州永川科技有限公司 | Multichannel electrical impedance tomography circuit and system |
| CN108685572A (en) * | 2018-05-17 | 2018-10-23 | 杭州永川科技有限公司 | Multichannel electrical impedance tomography circuit and system |
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| 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 |
-
2016
- 2016-03-21 CN CN201610159392.5A patent/CN105652755A/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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108577838A (en) * | 2018-05-17 | 2018-09-28 | 杭州永川科技有限公司 | Multichannel electrical impedance tomography circuit and system |
| CN108685572A (en) * | 2018-05-17 | 2018-10-23 | 杭州永川科技有限公司 | Multichannel electrical impedance tomography circuit and system |
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Application publication date: 20160608 |
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