CN107192468A - A kind of high acquisition rate temp measuring system of multichannel - Google Patents
A kind of high acquisition rate temp measuring system of multichannel Download PDFInfo
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- CN107192468A CN107192468A CN201710436156.8A CN201710436156A CN107192468A CN 107192468 A CN107192468 A CN 107192468A CN 201710436156 A CN201710436156 A CN 201710436156A CN 107192468 A CN107192468 A CN 107192468A
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- 238000012545 processing Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
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- 235000013399 edible fruits Nutrition 0.000 description 1
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- 238000002474 experimental method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
- G01K7/021—Particular circuit arrangements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/028—Means for indicating or recording specially adapted for thermometers arrangements for numerical indication
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Abstract
The present invention relates to a kind of high acquisition rate temp measuring system of multichannel, including thermocouple, temperature transmitter, data switch board, filter circuit board, high-frequency data analog input card, computer terminal, thermocouple is positioned by positioner in mould surface, thermocouple is connected with temperature transmitter one end, the other end of temperature transmitter is connected by the different passages on data switch board with the independent filter circuit on filter circuit board, the passage connections different from high-frequency data analog input card respectively of each independent filter circuit, USB interface on described high-frequency data analog input card is connected with the computer terminal equipped with data acquisition and switching software.The present invention can meet the high speed and multiple spot requirement in production application to temperature survey.The characteristics of because of its multichannel, high acquisition rate, can gathered data point is more, it is big to obtain data volume, make interpretation of result, count more comprehensive, credible.Also, changed because it completes electromotive force in software to temperature data, acquired results are temperature value, reduce the time of data processing, improve operating efficiency.
Description
Technical field
The present invention relates to a kind of temp measuring system, especially a kind of high acquisition rate temp measuring system of multichannel.
Background technology
In metal hot-working, due to producing or experiment etc. needs, often will to medium, such as liquid alloy etc.
Temperature variations carry out measurement monitoring in real time.In order to which complete and accurate describes medium temperature change procedure, temperature measuring point is typically required
It is more, more than 16~32 are reached, and temperature acquisition frequency will reach more than 100Hz.Conventional temperature testing equipment is at present
Temperature polling instrument, because temperature polling instrument is mainly used in industrial furnace, electronic product attribute testing, communication machine room isothermal
Degree change is not quickly or the less demanding occasion of response speed.The common passage of temperature polling instrument 8~16 on open market
Frequency acquisition single channel be up to 50Hz, and because logging needs the multiple channel input signals of touring processing one by one, such as
Fruit input signal is more, then the time of touring one week is longer, therefore port number is more, and frequency acquisition is lower.So temperature in use
Logging gathered data cannot meet requirement.
The content of the invention
The present invention seeks to solve temperature measuring point requirement it is more in the case of, the problem of thermometric frequency acquisition is relatively low, while to adopting
Collection data directly handle, are converted to temperature and shows, needed for realizing the high acquisition rate thermometric of multichannel, adaptation produce reality.
The present invention concrete technical scheme be, the high acquisition rate temp measuring system of multichannel include thermocouple, temperature transmitter,
Data switch board, filter circuit board, high-frequency data analog input card, computer terminal, thermocouple is by positioner in sand
Type surface is positioned, and thermocouple is connected with temperature transmitter one end, and the other end of temperature transmitter passes through on data switch board
Different passages are connected with the independent filter circuit on filter circuit board, each independent filter circuit respectively with high-frequency number
Connected according to the different passages on analog input card, the USB interface on described high-frequency data analog input card is with being equipped with data acquisition
Connected with the computer terminal of switching software.Described temperature transmitter number is that 32, i.e. thermometric passage are up to 32 passages.Often
The built-in thermistor of individual temperature transmitter is to realize temperature-compensating.Described temperature transmitter, data switch board, filtered electrical
Road board, high-frequency data analog input card be arranged on distribution box on, be additionally provided with described distribution box attaching plug, switch and
Positive and negative line bank, described attaching plug is powered for temperature transmitter, switch and positive and negative line bank respectively with each transmitter
Wiring is connected, it is ensured that the power demands of each thermometric passage.Fan is provided with described distribution box.
The temperature transmitter of the present invention is responsible for the signal for exporting thermocouple by being changed after the processing such as operation amplifier, correction
Into analog signal output, the circuit of attaching plug, switch and positive and negative line bank composition is powered for temperature transmitter, and fan is responsible for
System cools when working, and high-frequency data analog input card is responsible for the analog signal conversion for the filter circuit board output that will be collected
For data signal and computer terminal is sent to by USB interface to be analyzed, handle.The data collecting plate card frequency acquisition highest can
Reach 250KHz, single-channel data frequency acquisition can reach 250K/nHz (n is the port number of work).Described computer is whole
End is provided with data acquisition and switching software, and the software calls dynamic link library to be controlled gatherer process by VB platforms.
The working condition of software is to send data acquisition instructions after setting primary condition, while creating data storage file, then call
Data acquisition is carried out by the VC dynamic link libraries write.After acquisition tasks completion, the control of program returns to VB.VB will be adopted
It is that data signal true form value is converted into electromotive force value to collect data, further according to the electromotive force and temperature in GB/T 16839.1-1997
Calculated relationship carry out scale conversion, i.e., electromotive force value is converted into temperature value storage, exported, and in the display window cause for gossip of customization
When dynamic display collected data.The thermometric passage that the present invention is used is 32 passages, realizes the requirement of multichannel;Single-channel data
Frequency acquisition is up to 250K/nHz (n is the port number of work), it is ensured that the high acquisition rate of thermometric process, filter circuit
Use the stability and validity that ensure that data;Using data conversion software, and dynamic link library (DLL) is called to realize temperature
High speed acquisition and the conversion of signal are spent, the purpose of the high acquisition rate thermometric of multichannel is finally realized.The present invention can meet reality
To high speed and the multiple spot requirement of temperature survey in production application.The characteristics of because of its multichannel, high acquisition rate, can gathered data point
Many, acquisition data volume is big, makes interpretation of result, counts more comprehensive, credible.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Embodiment
As illustrated, the high acquisition rate temp measuring system of multichannel includes thermocouple 3, temperature transmitter 5, data switch board
11st, filter circuit board 10, high-frequency data analog input card 7, computer terminal 9, thermocouple 3 is by positioner 1 in the table of sand mold 2
Face is positioned, and thermocouple 3 is connected with the one end of temperature transmitter 5, and the other end of temperature transmitter 5 passes through on data switch board 11
Different passages are connected with the independent filter circuit on filter circuit board 10, each independent filter circuit respectively with high-frequency
USB interface 8 on different passages connection on data collecting plate card 7, described high-frequency data analog input card 7 is with being equipped with data
The computer terminal 9 of collection and switching software is connected.The described number of temperature transmitter 5 is 32, i.e. thermometric passage is up to 32
Passage.The built-in thermistor of each temperature transmitter 5 is to realize temperature-compensating.Described temperature transmitter 5, data switch plate
Card 11, filter circuit board 10, high-frequency data analog input card 7 are arranged on distribution box 13, are also set on described distribution box 13
Attaching plug 4, switch 6 and positive and negative line bank 12 are equipped with, described attaching plug 4 is powered for temperature transmitter 5, switch 6 and just
Negative line bank 12 is connected with each transmitter wiring respectively, it is ensured that the power demands of each thermometric passage.Described distribution
Fan 14 is provided with case 13.
Claims (5)
1. a kind of high acquisition rate temp measuring system of multichannel, it is characterised in that described system includes thermocouple (3), temperature and become
Device (5), data switch board (11), filter circuit board (10), high-frequency data analog input card (7), computer terminal (9) are sent,
Thermocouple (3) is positioned by positioner (1) on sand mold (2) surface, and thermocouple (3) is connected with temperature transmitter (5) one end, temperature
The other end for spending transmitter (5) passes through the independence on the different passages on data switch board (11) and filter circuit board (10)
Filter circuit be connected, each independent filter circuit is connected from the different passages on high-frequency data analog input card (7) respectively,
USB interface (8) on described high-frequency data analog input card (7) and the computer terminal equipped with data acquisition and switching software
(9) connect.
2. a kind of high acquisition rate temp measuring system of multichannel as claimed in claim 1, it is characterised in that described temperature pick-up
Device (5) number is that 32, i.e. thermometric passage are up to 32 passages.
3. a kind of high acquisition rate temp measuring system of multichannel as claimed in claim 1 or 2, it is characterised in that described is each
The built-in thermistor of temperature transmitter (5) is to realize temperature-compensating.
4. a kind of high acquisition rate temp measuring system of multichannel as claimed in claim 1, it is characterised in that described temperature pick-up
Device (5), data switch board (11), filter circuit board (10), high-frequency data analog input card (7) are arranged on distribution box (13)
On, attaching plug (4), switch (6) and positive and negative line bank (12) are additionally provided with described distribution box (13), described power supply is inserted
Head (4) is powered for temperature transmitter (5), and switch (6) and positive and negative line bank (12) are connected with each transmitter wiring respectively, is protected
Demonstrate,prove the power demands of each thermometric passage.
5. a kind of high acquisition rate temp measuring system of multichannel as claimed in claim 4, it is characterised in that described distribution box
(13) fan (14) is provided with.
Priority Applications (1)
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CN201710436156.8A CN107192468A (en) | 2017-06-12 | 2017-06-12 | A kind of high acquisition rate temp measuring system of multichannel |
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CN201710436156.8A CN107192468A (en) | 2017-06-12 | 2017-06-12 | A kind of high acquisition rate temp measuring system of multichannel |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108303191A (en) * | 2018-01-29 | 2018-07-20 | 湖北汽车工业学院 | Multi-channel temperature acquisition device and system |
CN108613751A (en) * | 2018-07-02 | 2018-10-02 | 苏州市计量测试院 | A kind of high-precision and high-stability temperature polling instrument and preparation method thereof, method for inspecting |
CN110926635A (en) * | 2019-10-17 | 2020-03-27 | 安徽普利仪器仪表科技有限公司 | Temperature transmitter with temperature compensation |
CN112161593A (en) * | 2020-09-18 | 2021-01-01 | 中国航发哈尔滨东安发动机有限公司 | Method for measuring alloy feeding distance |
Citations (5)
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CN1796950A (en) * | 2004-12-29 | 2006-07-05 | 中国科学院空间科学与应用研究中心 | Temperature acquisition system in multiple channels suitable to examination of microgravity liquid |
US20080304547A1 (en) * | 2007-06-11 | 2008-12-11 | Yokogawa Electric Corporation | Temperature measuring device |
CN201837478U (en) * | 2010-10-26 | 2011-05-18 | 重庆迪洋仪表有限责任公司 | Explosion proof type multi-point temperature measurement system |
CN105241566A (en) * | 2015-11-13 | 2016-01-13 | 哈尔滨东安发动机(集团)有限公司 | High-speed temperature measurement device |
CN206920035U (en) * | 2017-06-12 | 2018-01-23 | 中国航发哈尔滨东安发动机有限公司 | A kind of high acquisition rate temp measuring system of multichannel |
-
2017
- 2017-06-12 CN CN201710436156.8A patent/CN107192468A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1796950A (en) * | 2004-12-29 | 2006-07-05 | 中国科学院空间科学与应用研究中心 | Temperature acquisition system in multiple channels suitable to examination of microgravity liquid |
US20080304547A1 (en) * | 2007-06-11 | 2008-12-11 | Yokogawa Electric Corporation | Temperature measuring device |
CN201837478U (en) * | 2010-10-26 | 2011-05-18 | 重庆迪洋仪表有限责任公司 | Explosion proof type multi-point temperature measurement system |
CN105241566A (en) * | 2015-11-13 | 2016-01-13 | 哈尔滨东安发动机(集团)有限公司 | High-speed temperature measurement device |
CN206920035U (en) * | 2017-06-12 | 2018-01-23 | 中国航发哈尔滨东安发动机有限公司 | A kind of high acquisition rate temp measuring system of multichannel |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108303191A (en) * | 2018-01-29 | 2018-07-20 | 湖北汽车工业学院 | Multi-channel temperature acquisition device and system |
CN108613751A (en) * | 2018-07-02 | 2018-10-02 | 苏州市计量测试院 | A kind of high-precision and high-stability temperature polling instrument and preparation method thereof, method for inspecting |
CN110926635A (en) * | 2019-10-17 | 2020-03-27 | 安徽普利仪器仪表科技有限公司 | Temperature transmitter with temperature compensation |
CN112161593A (en) * | 2020-09-18 | 2021-01-01 | 中国航发哈尔滨东安发动机有限公司 | Method for measuring alloy feeding distance |
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