CN106989844A - A kind of data acquisition equipment and acquisition method - Google Patents

A kind of data acquisition equipment and acquisition method Download PDF

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Publication number
CN106989844A
CN106989844A CN201710283857.2A CN201710283857A CN106989844A CN 106989844 A CN106989844 A CN 106989844A CN 201710283857 A CN201710283857 A CN 201710283857A CN 106989844 A CN106989844 A CN 106989844A
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CN
China
Prior art keywords
module
data
acquisition
temperature
temperature correction
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.)
Pending
Application number
CN201710283857.2A
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Chinese (zh)
Inventor
付冬梅
吕振
王高远
杨焘
周珂
李晓刚
裴梓博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing University of Technology
University of Science and Technology Beijing USTB
Original Assignee
University of Science and Technology Beijing USTB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by University of Science and Technology Beijing USTB filed Critical University of Science and Technology Beijing USTB
Priority to CN201710283857.2A priority Critical patent/CN106989844A/en
Publication of CN106989844A publication Critical patent/CN106989844A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00Thermometers specially adapted for specific purposes
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K15/00Testing or calibrating of thermometers
    • G01K15/005Calibration

Abstract

This application discloses a kind of data acquisition equipment, including:Acquisition module is connected with driving source and automatic zero set module respectively, the data for gathering equipment under test change;The other end of driving source is connected with control module, under the control of control module, being connected or disconnecting with acquisition module;The other end of automatic zero set module is connected with processing module;The other end of processing module is connected with control module;Temperature collect module is connected with temperature correction module;Temperature correction module is also connected with control module;Control module is also connected with transport module.The application improves the precision of data acquisition, simultaneously because with temperature correction module, data acquisition equipment can be caused to minimize, so that convenient use and loading.

Description

A kind of data acquisition equipment and acquisition method
Technical field
The application is related to a kind of data acquisition equipment and acquisition method, belongs to the technical field of physical quantity collection.
Background technology
Data acquisition refers to the process of the gathered data signal from sensor and other equipment under tests, extensively should in computer Today, the bridge that data acquisition is connected as computer with the external physical world, its importance is very notable.
The purpose of data acquisition is that, in order to measure the physical phenomenons such as voltage, electric current, temperature, pressure or sound, its is accurate DATA REASONING is the basis of data acquisition.In the prior art when data acquisition equipment has higher acquisition precision and sensitivity, Equipment size is larger, it has not been convenient to uses and moves, and when the size of data acquisition equipment is smaller, can not ensure data acquisition again Accuracy and sensitivity, especially when equipment under test provide when being weak voltage signals or being faint resistance variations in itself, it is existing There is the data acquisition equipment in technology can not carry out accurate data acquisition.
The content of the invention
The problem of existing for prior art, the present invention provides a kind of data acquisition equipment, and not only accuracy of data acquisition is high, And data acquisition equipment small volume, convenient use is with loading.
The technical scheme is that:
This application provides a kind of data acquisition equipment, including:Acquisition module, driving source, automatic zero set module, processing mould Block, control module, temperature collect module, temperature correction module and transport module;
Acquisition module is connected with driving source and automatic zero set module respectively, the data for gathering equipment under test change;
The other end of driving source is connected with control module, under the control of control module, being connected with acquisition module or Disconnect;
The other end of automatic zero set module is connected with processing module, for by the short-circuit preset time of acquisition module so that place Manage module and obtain constant error;
The other end of processing module is connected with control module, for handling the data that acquisition module is gathered, and will Data and constant error after processing are sent to control module;
Temperature collect module is connected with temperature correction module, for collecting temperature data;
Temperature correction module, is also connected with control module, for the temperature data that is gathered according to temperature collect module to control The revised data that molding block is sent carry out temperature correction, and the data after temperature correction are sent into control module;
Control module is also connected with transport module, connection or disconnection for controlling driving source and acquisition module;It is additionally operable to The data after processing are modified according to constant error, obtained revised data are sent to temperature correction module;Also The data after temperature correction are carried out for receiving temperature correction module, and the data after temperature correction are sent to transport module;
Transport module, for the data after temperature correction to be sent into server.
Wherein, under driving source and acquisition module connection status, acquisition module collection is that micro- resistance of equipment under test is swashed Both end voltage value after encouraging;Under driving source and acquisition module off-state, what acquisition module was gathered is the micro voltage of equipment under test.
Specifically, processing module is gathered to acquisition module data difference amplifies after 10 times, then using 2.5V reference voltages as With reference to progress 24bitA/D conversion process.
Specifically, the driving source is controllable constant-current driving source, and its duration is 24bitA/D conversions in processing module Acquisition time.
Specifically, the temperature correction module utilizes neural network model u*=ANN (u, T) carries out temperature correction, wherein u Represent the data before calibration, u*The data after calibration are represented, T represents the temperature data of collection.
Further, control module is additionally operable to the temperature data for gathering temperature collect module and/or revised data It is sent to server.
Specifically, the transport module uses RS485 communication modes.
Further, the control module will be then forwarded to transport module after the data encryption after temperature correction, accordingly, Transport module is by the data after being encrypted to server transport.
Present invention also provides a kind of collecting method, including:
Gather the data of equipment under test change;
Data to collection are handled, and the data after processing are modified according to constant error, are obtained after amendment Data;
Temperature data during data acquisition is obtained, and temperature correction is carried out to revised data according to temperature data;
Data after temperature correction are sent to server.
Wherein, the data of collection are its both end voltage values after micro voltage either micro- resistance is energized.
The beneficial effect that the application can be produced includes:
1), data acquisition equipment provided in an embodiment of the present invention constitutes two-channel structure by driving source and acquisition module, no The delta data of equipment under test can be only collected, and intrinsic constant error is eliminated by automatic zero set module, simultaneously Eliminated by temperature correction module due to data deviation caused by temperature change, improve the precision of data acquisition, while by In with temperature correction module, data acquisition equipment small volume can be caused, so that convenient use and loading;
2), further, processing module can not only strengthen weak signal by difference amplifier and high position A/D conversion process Intensity, and improve the sensitivity of data acquisition;
3), further, transport module is communicated using RS485, reduces complexity of establishing network, improves data acquisition stable Property;
4), further, control module will be then forwarded to transport module, transport module after the data encryption after temperature correction By the data after being encrypted to server transport, data transmission security is improved.
Brief description of the drawings
Fig. 1 is a kind of data acquisition equipment structural representation provided in an embodiment of the present invention;
Fig. 2 is a kind of collecting method schematic flow sheet provided in an embodiment of the present invention.
Embodiment
The application is described in detail with reference to embodiment, but the application is not limited to these embodiments.
Referring to Fig. 1, the embodiments of the invention provide a kind of data acquisition equipment, including:Acquisition module 11, driving source 12, Automatic zero set module 13, processing module 14, control module 15, temperature collect module 16, temperature correction module 17 and transport module 18。
Specifically, acquisition module 11 is connected with driving source 12 and automatic zero set module 13 respectively, for gathering equipment under test The data of change;
Double-channel collection skill is used in order to improve acquisition module in the acquisition precision of data acquisition equipment, the embodiment of the present invention The data of the equipment under test change of art, i.e. acquisition module collection are divided into two-way, are all the way reference data, and another road is number to be measured According to the change information of data can be obtained by the comparison of two paths of data.The other end of driving source 12 is connected with control module 15, For under the control of control module 15, being connected or disconnecting with acquisition module 11;
In concrete application, under driving source 12 and the connection status of acquisition module 11, what acquisition module 11 was gathered is equipment under test Micro- resistance be energized after its both end voltage value, that is to say, that acquisition module 11 can be obtained by the voltage and current of collection Micro- resistance of equipment under test;Under driving source 12 and the off-state of acquisition module 11, what acquisition module 11 was gathered is equipment under test Micro voltage.
In practical application, due to the discrete type of electronic component, temperature can be caused to produce the shadow of intrinsic property to equipment under test Ring, therefore constant error of the data acquisition equipment in gathered data in the presence of fixation, the constant error is not modified, and incite somebody to action After the data of acquisition module collection are directly handled by processing module, it is impossible to be converted to standard value, therefore the embodiment of the present invention is logical Automatic zero set module 13 is crossed to correct the constant error of the fixation.
The other end of automatic zero set module 13 is connected with processing module 14, for by the short-circuit preset time of acquisition module 11, So that processing module 14 obtains constant error;
The other end of processing module 14 is connected with control module 15, at the data that are gathered to acquisition module 11 Reason, and the data and constant error after processing are sent to control module 15;
Specifically, the other end of processing module 14 is connected with control module 15 by spi bus, simple to operate, and data are passed Defeated speed is high.
The processing such as processing module 14 can be amplified to the data of collection, A/D conversions, filtering.In the embodiment of the present invention, The data difference that processing module 14 is gathered to acquisition module 11 amplifies after 10 times, then using 2.5V reference voltages as with reference to progress 24bitA/D conversions etc., not only strengthen the intensity of small-signal, it is possible to achieve the seizure to data minor variations, and 24bit A/D change the resolution ratio for also substantially increasing data, it is ensured that high sensitivity, meet the collection of most of production and living Demand.In the embodiment of the present invention, driving source 12 uses controllable constant-current driving source, and it only exports constant current when needing, And the duration is the acquisition time of A/D conversions in processing module 14, substantially reduces influence of the driving source to equipment under test, Reduce the power consumption and temperature rise of data acquisition equipment itself.
In practical application, temperature can have considerable influence to the data that data acquisition equipment is gathered, so as to reduce the essence of data Exactness, therefore the embodiment of the present invention is in order to improve the precision of data acquisition, in addition to temperature collect module 16 and temperature correction mould Block 17;
Temperature collect module 16 is connected with temperature correction module 17, for collecting temperature data;
Temperature correction module 17, is also connected with control module 15, for the temperature number gathered according to temperature collect module 16 Temperature correction is carried out according to the revised data sent to control module 15, and the data after temperature correction are sent to control mould Block 15;
Specifically, temperature correction module 17 utilizes neural network model u*=ANN (u, T) carries out temperature correction, wherein u tables Show the data before calibration, u*The data after calibration are represented, T represents the temperature data of collection.
Control module 15 is also connected with transport module 18, the connection or disconnected for controlling driving source 12 and acquisition module 11 Open;It is additionally operable to be modified the data after processing according to the constant error that processing module 14 is sent, it is revised by what is obtained Data are sent to temperature correction module 17;It is additionally operable to receive temperature correction module 17 and carries out the data after temperature correction, and by temperature Data after degree calibration are sent to transport module 18;
The embodiment of the present invention can also include memory module, and the data and constant error after processing are sent to by processing module Memory module;
Accordingly, data and constant error of the control module 15 from memory module after acquisition processing, then according to constant Error is modified to the data after processing, and revised data are sent to memory module;Control module 15 can also be by Data after the temperature data obtained from temperature correction module 17 and temperature correction are sent to memory module.
Transport module 18, for the data after temperature correction to be sent into server.
Specifically, transport module of the embodiment of the present invention 18 uses RS485 communication modes, not only reduces complexity of establishing network, And also ensure that the stability in data transmission procedure.
Further, in order to improve the securities of data, control module 15 will be retransmited after the data encryption after temperature correction To transport module 18, accordingly, transport module 18 is by the data after being encrypted to server transport, so as to ensure that data significantly Security.
In practical application, the data after temperature correction are not only sent to service by control module 15 by transport module 18 Device, by transport module 18 can also be sent to server by temperature data and/or revised data.
Data acquisition equipment provided in an embodiment of the present invention constitutes two-channel structure by driving source and acquisition module, not only may be used To collect the delta data of equipment under test, and intrinsic constant error is eliminated by automatic zero set module, passed through simultaneously Temperature correction module is eliminated due to data deviation caused by temperature change, improves the precision of data acquisition, simultaneously because tool There is temperature correction module, data acquisition equipment can be minimized, so that convenient use and loading;Further, mould is handled Block can not only strengthen the intensity of weak signal, and improve data acquisition by difference amplifier and high position A/D conversion process Sensitivity;Further, transport module is communicated using RS485, reduces complexity of establishing network, improves data acquisition stable Property;Further, control module will be then forwarded to transport module after the data encryption after temperature correction, and transport module will be to service Data after device transmission encryption, improve data transmission security.
Referring to Fig. 2, the embodiments of the invention provide a kind of collecting method, including:
201st, the data of collection equipment under test change;
Specifically, the data of collection can be micro voltage, or micro- resistance is energized its rear both end voltage value.
202nd, the data to collection are handled, and the data after processing are modified according to constant error, are repaiied Data after just;
Specifically, the data of collection can be amplified, A/D conversion, filtering etc. processing;, can in the embodiment of the present invention To amplify to the data difference of collection after 10 times, then using 2.5V reference voltages as with reference to 24bitA/D conversions etc. are carried out, not only add The strong intensity of small-signal, it is possible to achieve the seizure to data minor variations, and 24bit A/D conversions also substantially increase The resolution ratio of data, it is ensured that high sensitivity, meets the collection demand of most of production and living.
203rd, temperature data during data acquisition is obtained, and trip temperature school is entered to revised data according to temperature data It is accurate;
Specifically, it is possible to use neural network model u*=ANN (u, T) carries out temperature correction, and wherein u is represented before calibration Data, u*The data after calibration are represented, T represents the temperature data of collection.
204th, the data after temperature correction are sent to server.
Specifically, the data after temperature correction can be sent using RS485 communication modes.
Further, in order to improve the securities of data, it will can be sent after the data encryption after temperature correction, so that The security of data is ensure that significantly.
The embodiment of the present invention is handled and corrected to the data, obtained everywhere by gathering the data that equipment under test changes Then data after processing are carried out temperature correction, by temperature correction by the data after reason according to temperature data during data acquisition Data afterwards are sent, and can not only collect the delta data of equipment under test, and eliminate intrinsic constant error and Due to data deviation caused by temperature change, the precision of data acquisition is improved;Further, difference amplifier and high position A/ are passed through D conversion process, can not only strengthen the intensity of weak signal, and improve the sensitivity of data acquisition;Further, use RS485 is communicated, and is reduced complexity of establishing network, is improved data acquisition stability;Further, the data after temperature correction are added Sent after close, improve data transmission security.
It is described above, only it is several embodiments of the application, any type of limitation is not done to the application, although this Shen Please disclosed as above with preferred embodiment, but and be not used to limit the application, any those skilled in the art are not taking off In the range of technical scheme, make a little variation using the technology contents of the disclosure above or modification is equal to Case study on implementation is imitated, is belonged in the range of technical scheme.

Claims (10)

1. a kind of data acquisition equipment, it is characterised in that including:Acquisition module, driving source, automatic zero set module, processing module, Control module, temperature collect module, temperature correction module and transport module;
Acquisition module is connected with driving source and automatic zero set module respectively, the data for gathering equipment under test change;
The other end of driving source is connected with control module, under the control of control module, being connected or disconnecting with acquisition module;
The other end of automatic zero set module is connected with processing module, for by the short-circuit preset time of acquisition module so that processing mould Block obtains constant error;
The other end of processing module is connected with control module, for handling the data that acquisition module is gathered, and will processing Data and constant error afterwards are sent to control module;
Temperature collect module is connected with temperature correction module, for collecting temperature data;
Temperature correction module, is also connected with control module, for the temperature data that is gathered according to temperature collect module to control mould The revised data that block is sent carry out temperature correction, and the data after temperature correction are sent into control module;
Control module is also connected with transport module, connection or disconnection for controlling driving source and acquisition module;It is additionally operable to basis Constant error is modified to the data after processing, and obtained revised data are sent into temperature correction module;It is additionally operable to Receive temperature correction module and carry out the data after temperature correction, and the data after temperature correction are sent to transport module;
Transport module, for the data after temperature correction to be sent into server.
2. data acquisition equipment according to claim 1, it is characterised in that under driving source and acquisition module connection status, Acquisition module collection be equipment under test micro- resistance be energized after both end voltage value;Driving source and acquisition module off-state Under, what acquisition module was gathered is the micro voltage of equipment under test.
3. data acquisition equipment according to claim 1 or 2, it is characterised in that processing module is gathered to acquisition module Data difference amplifies after 10 times, then using 2.5V reference voltages as with reference to progress 24bitA/D conversion process.
4. data acquisition equipment according to claim 3, it is characterised in that the driving source is controllable constant-current driving source, Its duration is the acquisition time of 24bitA/D conversions in processing module.
5. data acquisition equipment according to claim 1 or 2, it is characterised in that the temperature correction module utilizes nerve Network model u*=ANN (u, T) carries out temperature correction, and wherein u represents the data before calibration, u*Represent the data after calibration, T tables Show the temperature data of collection.
6. data acquisition equipment according to claim 1, it is characterised in that control module is additionally operable to temperature collect module The temperature data of collection and/or revised data are sent to server.
7. data acquisition equipment according to claim 1, it is characterised in that the transport module uses RS485 communication sides Formula.
8. data acquisition equipment according to claim 1, it is characterised in that the control module is by the number after temperature correction According to transport module is then forwarded to after encryption, accordingly, transport module is by the data after being encrypted to server transport.
9. a kind of collecting method, it is characterised in that including:
Gather the data of equipment under test change;
Data to collection are handled, and the data after processing are modified according to constant error, obtain revised number According to;
Temperature data during data acquisition is obtained, and temperature correction is carried out to revised data according to temperature data;
Data after temperature correction are sent to server.
10. collecting method according to claim 9, it is characterised in that the data of collection are that micro voltage is either micro- Its both end voltage value after resistance is energized.
CN201710283857.2A 2017-04-26 2017-04-26 A kind of data acquisition equipment and acquisition method Pending CN106989844A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710283857.2A CN106989844A (en) 2017-04-26 2017-04-26 A kind of data acquisition equipment and acquisition method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710283857.2A CN106989844A (en) 2017-04-26 2017-04-26 A kind of data acquisition equipment and acquisition method

Publications (1)

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CN106989844A true CN106989844A (en) 2017-07-28

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107481500A (en) * 2017-09-15 2017-12-15 北京科技大学 A kind of data acquisition equipment and acquisition method
CN107655591A (en) * 2017-09-25 2018-02-02 南京航伽电子科技有限公司 Temperature transmitter method of testing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107481500A (en) * 2017-09-15 2017-12-15 北京科技大学 A kind of data acquisition equipment and acquisition method
CN107655591A (en) * 2017-09-25 2018-02-02 南京航伽电子科技有限公司 Temperature transmitter method of testing

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