CN105572464A - Distributed industrial micro-voltage signal acquisition device and method - Google Patents
Distributed industrial micro-voltage signal acquisition device and method Download PDFInfo
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- CN105572464A CN105572464A CN201510908434.6A CN201510908434A CN105572464A CN 105572464 A CN105572464 A CN 105572464A CN 201510908434 A CN201510908434 A CN 201510908434A CN 105572464 A CN105572464 A CN 105572464A
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- microprocessor
- micro voltage
- voltage signal
- distributed industrial
- signal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2503—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques for measuring voltage only, e.g. digital volt meters (DVM's)
Abstract
The invention discloses a distributed industrial micro-voltage signal acquisition device and method. The device comprises a plurality of differential input filtration modules, an A/D conversion module, a microprocessor and a distributed communication module, wherein the signal output ends of the differential input filtration modules are connected to the signal input end of the microprocessor through the A/D conversion module; and the signal output end of the microprocessor is connected with the input end of the distributed communication module. The distributed industrial micro-voltage signal acquisition device and method can collect standard output micro-voltage; and compared with the prior art, the device is small in size; through the distributed data acquisition technology, an acquisition system is flexible to install; application range is wide; simultaneous acquisition of multiple paths of micro-voltage signals and accurate measurement of the millivolt-level micro-voltage can be realized; and the acquisition accuracy and real-time performance are high.
Description
Technical field
What the present invention relates to is field of industrial measurement, in particular a kind of distributed industrial micro voltage signal harvester and method thereof.
Background technology
The force cells such as LOAD CELLS, pressure transducer, pulling force sensor, torsion torque sensor are widely used in commercial production and scientific research, but its millivolt level micro voltage signal exported often has, and magnitude of voltage is little, not easily Measurement accuracy and the problem such as to be easily disturbed, the extreme influence accuracy of commercial measurement.And existing micro voltage signal acquisition system head is comparatively large, and amount of acquisition channels is single, this strongly limits application and the dirigibility of signals collecting.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of distributed industrial micro voltage signal harvester and method thereof, existing micro voltage signal acquisition system head be large, acquisition channel is single to solve, real-time and accuracy not high-technology problem.
The present invention is achieved by the following technical solutions:
The invention provides a kind of distributed industrial micro voltage signal harvester, comprise some Differential Input filtration modules, A/D modular converter, microprocessor, distributing communication module, wherein: the signal output part of Differential Input filtration module is connected to the signal input part of microprocessor by A/D modular converter, the signal output part of microprocessor is connected with the input end of distributing communication module.
The model of described A/D modular converter is ADS1256.
Described A/D modular converter is connected with microprocessor by spi bus.
Described microprocessor is by CAN and distributing communication model calling.
Described distributed industrial micro voltage signal harvester also comprises power management module, and described power management module is connected with the power end of A/D modular converter, microprocessor, distributing communication module and provides power supply for it.
Described distributed industrial micro voltage signal harvester also comprises voltage reference, and described voltage reference is connected with the reference power supply end of A/D modular converter.
Present invention also offers the method utilizing above-mentioned distributed industrial micro voltage signal harvester to gather micro voltage signal, comprise the following steps:
(1) each Differential Input filtration module correspondence receives the micro voltage differential signal that each road exports, and Bing Jiangge road micro voltage differential signal carries out filtering process successively, is then stored to microprocessor by signal transmission by A/D modular converter temporarily;
(2) each road micro voltage differential signal temporarily stored is packaged as frame data by microprocessor, and sends to distributing communication module, and distributing communication module converts data to CAN signal and externally sends.
The invention provides a kind of distributed industrial micro voltage signal harvester and method thereof, for gathering standard output micro voltage, compared with prior art, beneficial effect of the present invention is specially:
1) multichannel micro voltage signal can be realized to gather simultaneously;
2) Measurement accuracy of millivolt level micro voltage can be realized, acquisition precision and real-time high;
3) volume is little and adopt distributed data acquisition technology, and acquisition system mounting means is flexible, and application is wide;
Accompanying drawing explanation
Fig. 1 is the circuit structure block diagram of distributed industrial micro voltage signal harvester;
Fig. 2 is the circuit theory diagrams of Differential Input filtration module;
Fig. 3 is the circuit theory diagrams of A/D modular converter;
Fig. 4 is the circuit theory diagrams of microprocessor;
Fig. 5 is the circuit theory diagrams of distributing communication module.
Embodiment
Elaborate to embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
The invention provides a kind of distributed industrial micro voltage signal harvester, there is structure as Figure 1-5, comprise Differential Input filtration module a1, b2, c3, d4, A/D modular converter, microprocessor, distributing communication module, voltage reference and power management module.
Described Differential Input filtration module a1, b2, c3, d4 are for be made up of INA118U chip and peripheral circuit thereof, described A/D modular converter is for be made up of ADS1256 chip and peripheral circuit thereof, described microprocessor is for be made up of TMS320F2812A chip and peripheral oscillatory circuit thereof, described distributing communication module for be made up of SN65HVD230D chip and peripheral circuit thereof, wherein: the signal output part of described Differential Input filtration module a1, b2, c3, d4 is connected with 4 differential input ends IN0, IN2, IN4, IN6 of ADS1256 chip respectively; The signal output part of described ADS1256 chip is connected by the signal input part of spi bus with TMS320F2812A chip, and its reference power supply end is connected with voltage reference; The signal output part of described TMS320F2812A chip is connected by the signal input part of CAN with SN65HVD230D chip.
Described power management module is connected with the power end of A/D modular converter, microprocessor, distributing communication module and provides power supply for it.
Utilize above-mentioned distributed industrial micro voltage signal harvester can realize multichannel micro voltage signal to gather, also can realize the Measurement accuracy of millivolt level micro voltage, concrete acquisition method comprises the following steps simultaneously:
(1) Differential Input filtration module a1, b2, c3, d4 correspondence receives micro voltage differential signal a, b, c, d, and this 4 road micro voltage differential signal a, b, c, d are carried out filtering process successively, then by A/D modular converter, signal transmission is stored to microprocessor temporarily;
(2) micro voltage differential signal a, b, c, d of storing are packaged as frame data by microprocessor temporarily, and send to distributing communication module, and distributing communication module converts data to CAN signal and externally sends.
Claims (7)
1. a distributed industrial micro voltage signal harvester, it is characterized in that, comprise some Differential Input filtration modules, A/D modular converter, microprocessor, distributing communication module, wherein: the signal output part of Differential Input filtration module is connected to the signal input part of microprocessor by A/D modular converter, the signal output part of microprocessor is connected with the input end of distributing communication module.
2. a kind of distributed industrial micro voltage signal harvester according to claim 1, is characterized in that, the model of described A/D modular converter is ADS1256.
3. a kind of distributed industrial micro voltage signal harvester according to claim 1, it is characterized in that, described A/D modular converter is connected with microprocessor by spi bus.
4. a kind of distributed industrial micro voltage signal harvester according to claim 1, it is characterized in that, described microprocessor is by CAN and distributing communication model calling.
5. a kind of distributed industrial micro voltage signal harvester according to claim 1, it is characterized in that, described distributed industrial micro voltage signal harvester also comprises power management module, and described power management module is connected with the power end of A/D modular converter, microprocessor, distributing communication module and provides power supply for it.
6. a kind of distributed industrial micro voltage signal harvester according to claim 1, is characterized in that, described distributed industrial micro voltage signal harvester also comprises voltage reference, and described voltage reference is connected with the reference power supply end of A/D modular converter.
7. utilize a method for described distributed industrial micro voltage signal harvester collection micro voltage signal as arbitrary in claim 1-6, it is characterized in that, comprise the following steps:
(1) each Differential Input filtration module correspondence receives the micro voltage differential signal that each road exports, and Bing Jiangge road micro voltage differential signal carries out filtering process successively, is then stored to microprocessor by signal transmission by A/D modular converter temporarily;
(2) each road micro voltage differential signal temporarily stored is packaged as frame data by microprocessor, and sends to distributing communication module, and distributing communication module converts data to CAN signal and externally sends.
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| CN201510908434.6A CN105572464A (en) | 2015-12-07 | 2015-12-07 | Distributed industrial micro-voltage signal acquisition device and method |
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| CN201510908434.6A CN105572464A (en) | 2015-12-07 | 2015-12-07 | Distributed industrial micro-voltage signal acquisition device and method |
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| 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 |
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| US20150123671A1 (en) * | 2013-11-06 | 2015-05-07 | General Electric Company | Systems and methods for monitoring leakage current of an industrial machine |
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2015
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| CN101509960A (en) * | 2008-11-20 | 2009-08-19 | 奇瑞汽车股份有限公司 | Battery voltage and temperature monitoring device |
| CN201555893U (en) * | 2009-07-09 | 2010-08-18 | 沈阳博来德滋电子科技有限公司 | Distribution type alternating current sampling device |
| CN201993124U (en) * | 2011-01-30 | 2011-09-28 | 辉景电子科技(上海)有限公司 | Multi-channel physical quantity measuring 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 |
| US20150123671A1 (en) * | 2013-11-06 | 2015-05-07 | General Electric Company | Systems and methods for monitoring leakage current of an industrial machine |
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Application publication date: 20160511 |
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