CN1580710A - Embedded temperature oscillometer and measuring method thereof - Google Patents
Embedded temperature oscillometer and measuring method thereof Download PDFInfo
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- CN1580710A CN1580710A CN 03132245 CN03132245A CN1580710A CN 1580710 A CN1580710 A CN 1580710A CN 03132245 CN03132245 CN 03132245 CN 03132245 A CN03132245 A CN 03132245A CN 1580710 A CN1580710 A CN 1580710A
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Abstract
This is an inlaid temperature pulse instrument and its measuring method. It comprises temperature pulse sensor, the platinum thread probe. The output end of temperature pulse sensor connect the data transmitting joint which can translate the imitative signal to digital signal and calculate coding the signal be finished by the inlay pattern block which is composed of modulus exchanger MAX197 and monolithic memory circuit AT89C2051 and RS-232, RS-484. The method include: To receive the imitative signal by the sensor and output the digital signal, especially the time circuit plate which collect the output of the sensor, according to collective object of the sensor, to decide the times of collective to deal with the digital data, and transport the coded data to the transmit joint.
Description
Technical field the present invention relates to a kind of atmosphere scientific experiment measuring apparatus and measuring method, especially inlaid temperature pulse instrument and measuring method.
Background technology is present, and along with developing rapidly of photoelectric technology, the importance of optical turbulence more and more is subject to people's attention.In Laser Transmission, turbulence effect causes the drift and the expansion of light beam; In image was used, turbulence effect caused the shake and the distortion of image; Turbulent flow also can reduce the resolution of astronomical telescope.For the various phenomenons of quantitative examination laser by turbulent atmosphere, to solve the various optical engineering problems relevant, need understand the optical turbulence structure of light path in depth with these phenomenons, measure subaerial refractive index structure parameter C
n 2Feature, be not only the basis of calculating transmission problem near the ground, also can be used to calculate the C in boundary layer
n 2Distribute.Common measurement instruments has micro-temperature sensor, and is employed as the applicant, and it is made of platinum filament probe and the temperature fluctuation sensor that is electrically connected with it.During measurement, the variation of the small fluctuating of surface air temperature is experienced by the platinum filament probe, is sent to Computer Processing by interface circuit after the temperature fluctuation sensor amplifies it.But the weak point that this micro-temperature sensor exists is that at first, interface circuit is complicated, integrated level is low, job insecurity; Secondly, except that the analog signals of exporting was subject to disturb, the distance of signal transmission also was restricted, and computing machine is had at its signal of short distance reception, and this not only influences the accuracy of platinum filament probe measurement, also need solve the problem that computing machine field work adapts to; Once more, the program structure of computing machine that receives its signal is unintelligible, and programming is complicated, easily make mistakes.
The summary of the invention the technical problem to be solved in the present invention provides a kind of simple in structure, practical for overcoming weak point of the prior art, uses inlaid temperature pulse instrument and measuring method more easily.
Inlaid temperature pulse instrument comprises the platinum filament probe that is connected with the temperature fluctuation sensor electrical, the output terminal of particularly said temperature fluctuation sensor is electrically connected with flush bonding module and data transmission interface successively, said flush bonding module is made up of analog to digital converter MAX197 and single chip computer AT 89C2051, be used for the analog signals of temperature fluctuation sensor output is converted to digital quantity and it is carried out computing, coding, said data transmission interface is RS-232 serial line interface or RS-485 serial line interface, is used for the digital quantity signal after the flush bonding module processing is sent to host computer.
As the further improvement of inlaid temperature pulse instrument, the input port of described analog to digital converter MAX197
With
Pin is jointing temp fluctuation sensor, temperature sensor and humidity sensor respectively, be used to receive the analog signals that each sensor is sent here, the control port pin of single chip computer AT 89C2051 2., 7. with 8. with the control port of analog to digital converter MAX197 3., 4. with 5. pin be connected, be used to control the signal that analog to digital converter MAX197 timesharing receives each sensor, the number ground bus port of analog to digital converter MAX197 7.～the pin connects the number ground bus port pin of single-chip microcomputer AT89C2051
Be used for exporting the digital quantity signal of conversion to single chip computer AT 89C2051, the 6. pin of analog to digital converter MAX197 connects the pin of single-chip microcomputer AT89C2051
Be used for sending to single chip computer AT 89C2051 the signal of digital quantity end of output, the output port pin of single chip computer AT 89C2051 connects the input end of data transmission interface, is used for the data after handling are sent out; Be serially connected with switch between the output port pin of described RS-232 serial line interface and RS-485 serial line interface and single chip computer AT 89C2051.
The measuring method of inlaid temperature pulse instrument comprises the analog signals and the output digital quantity signal of receiving sensor, particularly sets the timeslice of pick-up transducers output, produces the time reference of an acquisition time; According to the object of pick-up transducers, determine the number of times of collection, for turbulent flow, gather 500 times, for temperature or humidity, then gather 16 times; The data that convert digital quantity to are handled, promptly asked its variance for the data of turbulent flow, the data for temperature or humidity sort by size, and after casting out end to end each data of four times, ask its average; Digital coding after handling is become three groups of corresponding numbers, regularly send to data transmission interface.
Beneficial effect with respect to prior art is, one, the application of the flush bonding module of forming by analog to digital converter MAX197 and single chip computer AT 89C2051, whole integrated level was improved, reduced the failure rate of circuit, stopped the possibility that output signal is disturbed again, can without restriction it be arranged at any place and use; They are two years old, data transmission interface is selected RS-232 serial line interface or RS-485 serial line interface for use, make not only that interface circuit becomes simply, standard, also can select RS-232 or RS-485 according to the distance of need transmission, so that the transmission range of output signal is no longer limited, avoided computing machine to have to be positioned near the of temperature fluctuation sensor and work in the field, and caused defective therefrom the interference of platinum filament probe measurement accuracy; They are three years old, the program of the measuring method of having stationed among the single chip computer AT 89C2051, except that oscillometer is had the intelligentized function, and the modularization of the program of its host computer is improved, control algolithm, travelling speed also become simple and have obtained bigger raising.
Description of drawings is described in further detail optimal way of the present invention below in conjunction with accompanying drawing.
Fig. 1 is a kind of embodiment circuit structure diagram of the present invention;
Fig. 2 is the process flow diagram of measuring method of the present invention.
Embodiment is referring to Fig. 1, and platinum filament probe 1, temperature fluctuation sensor 2, flush bonding module 5 and data transmission interface 6 are electrically connected successively.Wherein, platinum filament probe 1 is that 10 microns, length are 19 millimeters, apart are that two probes of 1 meter constitute by diameter, is used to respond to the variation of the small fluctuating of ground atmospheric temperature.Temperature fluctuation sensor 2 is built-in with amplifying circuit, is used for the ultra-weak electronic signal of platinum filament probe 1 output is amplified without distortion, is beneficial to follow-up processing.Flush bonding module 5 is made up of analog to digital converter MAX197 and single chip computer AT 89C2051, is used for the analog signals of temperature fluctuation sensor 2 outputs is converted to digital quantity and it is carried out computing and coding, wherein, the input port of analog to digital converter MAX197
The output terminal of pin jointing temp fluctuation sensor 2,
Pin jointing temp sensor 3,
Pin connects humidity sensor 4, is used to receive the analog signals of temperature fluctuation that above-mentioned three sensors send here, temperature, humidity; The control port pin of single chip computer AT 89C2051 2., 7. with 8. respectively with the control port of analog to digital converter MAX197 3., 4. with 5. pin be connected, be used to control the signal that analog to digital converter MAX197 receives temperature fluctuation sensor 2 or temperature sensor 3 or humidity sensor 4 at times; The number ground bus port of analog to digital converter MAX197 7.～the pin connects the number ground bus port pin of single-chip microcomputer AT89C2051
Be used for to convert the temperature fluctuation of digital quantity to or the signal of temperature or humidity exports single chip computer AT 89C2051 to; The 6. pin of analog to digital converter MAX197 connects the pin of single-chip microcomputer AT89C2051
Be used for sending the signal of digital quantity end of output to single chip computer AT 89C2051; The output port pin of single chip computer AT 89C2051 connects the input end of data transmission interface 6, is used for the data after handling are sent out.The input end of data transmission interface 6 is a switch 61, and this switch 61 is connected with the input end of RS-232 serial line interface with the RS-485 serial line interface respectively, is used for the digital quantity signal after flush bonding module 5 processing is sent to host computer.
Referring to Fig. 2, the measuring method of inlaid temperature pulse instrument and the workflow of instrument are as follows: after the inlaid temperature pulse instrument energising, single chip computer AT 89C2051 is to each subroutine of having stationed in its own functional part and the internal memory, and analog to digital converter MAX197 presets initial value, both set its initialization state, set the timing interrupting value of 10ms as giving 16 timers/counter, with timeslice, respectively to (steps 110) such as counter zero setting of collecting temperature pulsation, temperature and humidity as the acquisition time data.Then, in step 120, single chip computer AT 89C2051 is waiting for regularly other affairs of arrival pre-treatment of look-at-me.In case regularly look-at-me is come, single chip computer AT 89C2051 is with regard to the data (step 130) of collecting temperature fluctuation sensor 2.Afterwards, does single chip computer AT 89C2051 check that the value of temperature fluctuation counter n equals 500 (steps 140)? promptly, whether gathered 500 times for turbulent flow.If non-, then go back to step 120, in order to continuing the data of collecting temperature fluctuation sensor 2.If the value of temperature fluctuation counter n has equaled 500, then in step 150, call and calculate variance 1/n * ∑ (T
1-T
2)
2Subroutine, to obtain the variance of the temperature fluctuation data of having gathered, the T in the formula
1, T
2The temperature difference (directly being exported by temperature fluctuation sensor 2), the n that are at 2 are the number that collects.Then, in step 160, the data of single chip computer AT 89C2051 difference collecting temperature and humidity each 16 times.Afterwards, in step 170, the data with the temperature and humidity that collects sort by its size respectively, after casting out end to end each data of four times, ask its average respectively.Then, in step 180, behind the average coding with the variance yields of temperature fluctuation, temperature, humidity, be sent to host computer by data transmission interface 6.
Obviously, those skilled in the art can carry out various changes and modification to inlaid temperature pulse instrument of the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (4)
1, a kind of inlaid temperature pulse instrument, comprise the platinum filament probe (1) that is electrically connected with temperature fluctuation sensor (2), the output terminal that it is characterized in that said temperature fluctuation sensor (2) is electrically connected with flush bonding module (5) and data transmission interface (6) successively, said flush bonding module (5) is made up of analog to digital converter MAX197 and single chip computer AT 89C2051, be used for the analog signals of temperature fluctuation sensor (2) output is converted to digital quantity and it is carried out computing, coding, said data transmission interface (6) is RS-232 serial line interface or RS-485 serial line interface, is used for the digital quantity signal after flush bonding module (5) processing is sent to host computer.
2, inlaid temperature pulse instrument according to claim 1 is characterized in that the input port of analog to digital converter MAX197
With
Pin is jointing temp fluctuation sensor (2), temperature sensor (3) and humidity sensor (4) respectively, is used to receive the analog signals that each sensor is sent here; The control port pin of single chip computer AT 89C2051 2., 7. with 8. with the control port of analog to digital converter MAX197 3., 4. with 5. pin be connected, be used to control the signal that analog to digital converter MAX197 timesharing receives each sensor; The number ground bus port of analog to digital converter MAX197 7.～the pin connects the number ground bus port pin of single-chip microcomputer AT89C2051
～ is used for exporting the digital quantity signal of conversion to single chip computer AT 89C2051; The 6. pin of analog to digital converter MAX197 connects the pin of single-chip microcomputer AT89C2051
Be used for sending the signal of digital quantity end of output to single chip computer AT 89C2051; The output port pin of single chip computer AT 89C2051 connects the input end of data transmission interface (6), is used for the data after handling are sent out.
3, inlaid temperature pulse instrument according to claim 1 is characterized in that being serially connected with switch (61) between the output port pin of RS-232 serial line interface and RS-485 serial line interface and single chip computer AT 89C2051.
4, the measuring method of inlaid temperature pulse instrument according to claim 1 comprises the analog signals of receiving sensor and exports digital quantity signal, it is characterized in that:
Set the timeslice of pick-up transducers output, produce the time reference of an acquisition time;
According to the object of pick-up transducers, determine the number of times of collection, for turbulent flow, gather 500 times, for temperature or humidity, then gather 16 times;
The data that convert digital quantity to are handled, promptly asked its variance for the data of turbulent flow, the data for temperature or humidity sort by size, and after casting out end to end each data of four times, ask its average;
Digital coding after handling is become three groups of corresponding numbers, regularly send to data transmission interface (6).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03132245 CN1260553C (en) | 2003-07-30 | 2003-07-30 | Embedded temperature oscillometer and measuring method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03132245 CN1260553C (en) | 2003-07-30 | 2003-07-30 | Embedded temperature oscillometer and measuring method thereof |
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| CN1580710A true CN1580710A (en) | 2005-02-16 |
| CN1260553C CN1260553C (en) | 2006-06-21 |
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|---|---|---|---|
| CN 03132245 Expired - Fee Related CN1260553C (en) | 2003-07-30 | 2003-07-30 | Embedded temperature oscillometer and measuring method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453977C (en) * | 2006-11-08 | 2009-01-21 | 中国科学院合肥物质科学研究院 | Embedded type detecting instrument for agricultural plant growth environment, and working method |
| CN102539111A (en) * | 2011-12-17 | 2012-07-04 | 中国科学院安徽光学精密机械研究所 | Temperature oscillometer based on dsPIC singlechip |
| CN110108842A (en) * | 2019-05-16 | 2019-08-09 | 安徽建筑大学 | A kind of Refractive-index-structure parameter measuring device and method based on unmanned plane |
| CN110836731A (en) * | 2019-11-07 | 2020-02-25 | 南昌大学 | Temperature pulsation appearance based on digital sensing chip |
| CN113758595A (en) * | 2020-12-02 | 2021-12-07 | 长春理工大学 | Resistance-type temperature pulsation appearance with solar irradiation and atmospheric pressure temperature compensation function |
| CN114526828A (en) * | 2022-01-28 | 2022-05-24 | 中国科学院合肥物质科学研究院 | High-speed temperature pulsation measuring instrument and method for balloon sounding platform |
| US11754749B2 (en) * | 2021-07-20 | 2023-09-12 | National Central University | Atmospheric turbulence detection method and atmospheric turbulence detection device |
-
2003
- 2003-07-30 CN CN 03132245 patent/CN1260553C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100453977C (en) * | 2006-11-08 | 2009-01-21 | 中国科学院合肥物质科学研究院 | Embedded type detecting instrument for agricultural plant growth environment, and working method |
| CN102539111A (en) * | 2011-12-17 | 2012-07-04 | 中国科学院安徽光学精密机械研究所 | Temperature oscillometer based on dsPIC singlechip |
| CN102539111B (en) * | 2011-12-17 | 2014-03-05 | 中国科学院安徽光学精密机械研究所 | Temperature oscillometer based on dsPIC singlechip |
| CN110108842A (en) * | 2019-05-16 | 2019-08-09 | 安徽建筑大学 | A kind of Refractive-index-structure parameter measuring device and method based on unmanned plane |
| CN110836731A (en) * | 2019-11-07 | 2020-02-25 | 南昌大学 | Temperature pulsation appearance based on digital sensing chip |
| CN113758595A (en) * | 2020-12-02 | 2021-12-07 | 长春理工大学 | Resistance-type temperature pulsation appearance with solar irradiation and atmospheric pressure temperature compensation function |
| US11754749B2 (en) * | 2021-07-20 | 2023-09-12 | National Central University | Atmospheric turbulence detection method and atmospheric turbulence detection device |
| CN114526828A (en) * | 2022-01-28 | 2022-05-24 | 中国科学院合肥物质科学研究院 | High-speed temperature pulsation measuring instrument and method for balloon sounding platform |
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| Publication number | Publication date |
|---|---|
| CN1260553C (en) | 2006-06-21 |
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