CN101852755A - Imaging and tracing system and method for measuring soil solute migration - Google Patents
Imaging and tracing system and method for measuring soil solute migration Download PDFInfo
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Abstract
The invention relates to the technical field of tracing and imaging of images, in particular to an imaging and tracing system and an imaging and tracing method for measuring soil solute migration. The system comprises a touch screen, a display unit, an electric signal triggering unit, a multipath control unit, an operation processing unit, a measuring and controlling unit and a measuring electrode, wherein the display unit is connected with a single board computer of the operation processing unit through a low voltage differential signaling (LVDS)/transistor-transistor logic (TTL) digital display interface; a controller on the touch screen is connected with a universal serial bus (USB) interface of the single board computer through a USB interface; and the measuring and controlling unit is connected with the single board computer of the operation processing unit through an RS232 serial communication interface, drives the multipath control unit through a digital output port and controls the electric signal triggering unit to access the multipath control unit. The system and the method have the advantages of suitability for various types and various concentrations of solutes and capability of measuring of large-size and small-size permeation models, reflecting a corresponding relation between the concentration and the specific resistance of the solute, enhancing the reliability of the system and meeting the measuring requirement of long-term imaging and tracing of solute migration.
Description
Technical field
The present invention relates to image spike and technical field of imaging, relate in particular to a kind of imaging tracing system and method that is used for the measured soil solute migration.
Background technology
Current and solute transfer are the important topics that keeps agricultural, natural resources (soil and water etc.) and environment sustainable development to carry out in the research soil unsaturation band.Have close getting in touch between soil water flow and solute migration analogy method and the measurement means.The existing holard and solute monitoring theory and method lay particular stress on the observation of soil moisture content and solutes content (concentration) more, soil moisture content and concentration only can provide the value (or mean value) of a depth location, its the possibility of result causes estimating for the mistake of solute migration characteristic, the risk assessment scheme of the model prediction of mistake and misleading, although can pass through at different depth, diverse location is provided with soil moisture content and concentration observation probe, detailed observation soil water flow and solute migration situation, carry out on-the-spot tracer test etc., yet these methods need very big input and cost plenty of time, particularly in soil media condition areas with complicated comparatively, and this measuring method also is short of the flyway of the holard and pollutant under the description complex situations that can not be detailed to some extent for the assurance degree of CONCENTRATION DISTRIBUTION tendency.Traditional model is that physical basis or the non-homogeneous solute migration of prediction all face problems.Compare measured soil water percentage and solute concentration, the mensuration of flux and process is even more important for understanding solute motion migration rule, and for example many contaminated environment all are to be in the less place of circulating water potential gradient.Owing to the Spatial Variability and the unevenness of soil media height, mobile flux of on-the-spot accurately mensuration and process are quite difficult, expensive and time consuming under the operate under unsaturated conditions.
Under saturation conditions, by the transponder pulse thermal source, mobile flux and pore velocity under the saturation conditions are measured according to relation between flow direction temperature gap and the mobile flux, under multiple edaphic condition, obtained effect preferably.Yet this method is measured non-homogeneous flux and is still had many problems under operate under unsaturated conditions, have only by measuring method of overall importance and can effectively hold the non-uniform flow dynamic characteristic, and then the migration rule of polluting solute is made accurately, reasonably predicted.Under the Non-Uniform Flow condition, also mobile flux field can be influenced to a great extent, also tangible influence can be produced for predicting the outcome because the temperature field of thermal source generation takes place.Simultaneously, the soil hydrologic parameter of directly measuring under the unsaturation environment also is very difficult and arm and a leg.
Because the complicacy of soil solute migration theory, now not have specially at the product of soil solute migration imaging, traditional solute migration measuring method adopts soil sample, steam ooze measurement method can't from overall, obtain the process of osmosis of solute in real time; The high density resistor instrument only limits to the measurement of resistivity in application in engineering, can't set up solute concentration-resistivity models, also can't pass through the imaging analysis process of osmosis, therefore is necessary to study specially the imaging device at the soil solute infiltration.
Summary of the invention
Technical matters at above-mentioned existence, the purpose of this invention is to provide a kind of imaging tracing system and method that is used for the measured soil solute migration, can application and the measurement of soil, underground water characteristic, to change the limitation of traditional measurement method, obtain the migrate attribute and the scale feature of soil solute more efficiently and accurately.
For achieving the above object, the present invention adopts following technical scheme:
Touch-screen, display unit, electric signal excite unit, multichannel control module, operation processing unit, measurement and control unit, potential electrode;
Display unit is connected with the single board computer of operation processing unit by the LVDS/TTL digital display interface, controller on the touch screen links to each other with the USB interface of single board computer by USB interface, touch screen be installed in display unit display screen directly over, and and display screen overlap, the touch area is identical with display area size;
Measurement and control unit is connected with the single board computer of operation processing unit by the RS232 serial communication interface; Measurement and control unit drives the multichannel control module by digital output port, controls electric signal simultaneously and excites the unit to insert the multichannel control module;
The multichannel control module is subjected to the drive controlling of measurement and control unit, excites the drive current of unit to insert corresponding potential electrode electric signal, simultaneously voltage measurement electrodes is strobed into the metering circuit of measurement and control unit; Measurement and control unit is sampled to the electric signal that electric signal excites the unit to output to electrode simultaneously, measures the size of actual output current.
Described operation processing unit adopts the high-performance single board computer to constitute, and comprises storer and solid-state electronic dish, electric board installing operating system and soil solute migration imaging spike software.
Described display unit is made of very color highlighted liquid crystal display, comprises image displaying part and operation and control interface.
Described touch-screen is corresponding with graphical operation and control interface, can directly click on touch-screen by pointer, finger, realizes the button on the interface, combobox, window, combo box etc. are operated.
Described measurement and control unit is made up of 32 MCU control panels, metering circuit, control circuits, described MCU is 32 8-digit microcontrollers of ATMEL AT91 series built-in FLASH, Programmable Logic Controller is 8255, the ICL7650 chopping zero-stabilizing amplifier is selected in preposition input for use, carry out program control amplification by the CD4051 analog switch, modulus conversion chip is AD574.
Voltage measurement electrodes in the described potential electrode is through the preposition input stage of the relay array access metering circuit of multichannel control module, and the input stage enlargement factor realizes the enlargement factor adjustment by MCU analog switch selected topic resistor network, and filtering circuit is a low-pass filter.
Selected yardstick and the electrode type measured by equidistantly laying electrode, is connected to device cable connecting interface with cable;
Electrode pole span, number of poles, metering system, electrode type are set, swash the electricity time, configuration parameter is sent to measurement and control unit through communication system, the MCU of measurement and control unit receives instruction control and swashs circuit and multiplexer (MUX, to swash electric signal and output to counter electrode, multiplexer (MUX gating potential electrode simultaneously is connected to metering circuit, electric signal is converted into digital signal through sampling modulate circuit, wide region gain amplifying circuit, high-precision adc, handles the back passback via MCU and gives operation processing unit;
Operation processing unit is converted to the measured value that returns resistivity and determines the volume coordinate that each value is corresponding according to configuration parameter; After treating that one group of data is all obtained, select color template, drawing image according to the measured value distribution range.Configuration parameter, measurement result, color template, view data are all stored with document form;
Be equipped with the solute nominal concentration, electrode pole span, number of poles, metering system, electrode type be set in software, swash electricity time, type of solutes, nominal concentration, measuring period;
Process of osmosis is carried out the room and time laminar analysis measurement, and arithmetic processing system software is realized the process of osmosis digital imagery by concentration-resistivity models, and image shows with space plane, upgrades by time of penetration;
Choose different spaces distribution reference point, according to solute parameter and concentration-resistivity saturated model the data of real-time collection are carried out trend prediction or historical data is carried out the theoretical analysis that the off-line prediction is used for model, predicting the outcome, it is for reference to be depicted as trend curve.
The present invention has the following advantages and good effect:
1) the present invention is applicable to the solute of all kinds and concentration, can satisfy large scale and small scale saturated model simultaneously and measure, and can reflect the corresponding relation of solute concentration and resistivity, and the solute migration process is exported with image mode, and form is directly perceived, is convenient to analysis and understanding;
2) improved the reliability of system, can satisfy long solute migration imaging spike and measure demand, user interface close friend, and be equipped with help file, and conveniently consult, be easy to use, easy to maintenance, expansion interface is abundant.
Description of drawings
Fig. 1 is the structured flowchart that is used for the imaging tracing system of soil solute migration provided by the invention.
Fig. 2 is the composition structured flowchart of measurement and control unit among the present invention.
Fig. 3 is the process flow diagram that is used for the imaging tracing method of soil solute migration provided by the invention.
Embodiment
The invention will be further described in conjunction with the accompanying drawings with specific embodiment below:
Principle of the present invention is to utilize the DC electric field research soil media resistivity distribution of study area all directions observation, in medium, launch primary current, because the unevenness of material (solute) content makes the distribution of electric current change in medium and the medium, this variation causes the change of current potential, the current potential that observes is converted into resistivity, corresponding by setting up the relation between resistivity and the solutes content, the non-homogeneous transition process of solute is carried out continuous observation and imaging spike.
The imaging tracing system that is used for the measured soil solute migration provided by the invention, specifically by the following technical solutions, referring to Fig. 1, native system comprises that touch-screen 101, display unit 102, electric signal excite unit 103, multichannel control module 104, operation processing unit 105, measurement and control unit 106, potential electrode 107;
Display unit 102 is connected with the single board computer of operation processing unit 105 by the LVDS/TTL digital display interface, and the controller on the touch screen 101 links to each other with the USB interface of single board computer by USB interface; Touch screen 101 be installed in display unit 102 display screen directly over, and and display screen overlap, measure-alike; Measurement and control unit 106 is connected with the single board computer of operation processing unit 105 by the RS232 serial communication interface; Measurement and control unit 106 drives multichannel control module 104 by digital output port, controls electric signal simultaneously and excites unit 103 to insert multichannel control module 104; Multichannel control module 104 is subjected to the drive controlling of measurement and control unit 106, excites the drive current of unit 103 to insert corresponding potential electrode 107 electric signal, simultaneously voltage measurement electrodes is strobed into the metering circuit of measurement and control unit 106; Measurement and control unit 106 is sampled to the electric signal that electric signal excites unit 103 to output to electrode simultaneously, measures the size of actual output current.
Operation processing unit adopts high-performance single board computer SBC to constitute, and contains storer and solid-state electronic dish, electric board installing operating system and soil solute migration imaging spike software.
Display unit is made of very color highlighted liquid crystal display, is connected with SBC by the LVDS/TTL digital display interface, and the display routine interface comprises image displaying part and operation and control interface.
Touch-screen is installed on the liquid crystal display, and is corresponding with graphical operation and control interface, can directly click on touch-screen by pointer, finger, realizes the button on the interface, combobox, window, combo box etc. are operated.
Measurement and control unit, by 32 MCU control panels, metering circuit, control circuit is formed, link to each other with arithmetic processing system by serial communication interface, TT﹠C system produces excitation signal according to arithmetic processing system instruction control signal excitation system, swash electrode and potential electrode accordingly according to program circuit control multi-way control system gating simultaneously, metering circuit is finished the one-shot measurement of counter electrode electric signal, measurement and control unit instructs the automatic switchover that realizes swashing electrode and potential electrode to the multichannel control module according to the mode of operation output data of setting, and then realizes the continuous coverage to the soil solute migration process; TT﹠C system is nursed one's health, amplifies, is changed signal, gives arithmetic processing system with data layout through the serial communication interface loopback, and the arithmetic processing system arithmetic processing system also can change according to the room and time of parameter to be predicted transition process.
MCU is 32 8-digit microcontrollers of ATMEL AT91 series built-in FLASH, and Programmable Logic Controller is 8255, and the ICL7650 chopping zero-stabilizing amplifier is selected in preposition input for use, carries out program control amplification by the CD4051 analog switch; Modulus conversion chip is AD574.
Voltage measurement electrodes in the potential electrode inserts the preposition input stage of metering circuit through the relay array of multichannel control module, the input stage enlargement factor realizes the enlargement factor adjustment by MCU analog switch selected topic resistor network, filtering circuit is a low-pass filter, creating high frequency noise repeatly disturbs, output dc voltage is converted to frequency signal through VFC, through isolator output, can play the Signal Spacing protective effect; Frequency signal is reduced to aanalogvoltage through FVC again, obtains measurement result input MCU through analog to digital conversion circuit, and MCU finishes the conversion Calculation of actual measured results.
Electric signal excites the battery modules of unit to be subjected to the sharp electric current of programmed control output controlled amount, and the output size is by the control of supply voltage selective relay permutation, under MCU control exportable 100%, 80%, 50%, 40%, 30%, 20%, 10%, 5% full scale voltage.
The multichannel control module by programmable parallel IO realizes electrode by driving circuit and relay array under MCU control high speed switching, selects to swash electrode and voltage measurement electrodes according to programmed logic.
Potential electrode by 60 outfits, can be expanded on request, can choose effective potential electrode number during measurement, can satisfy 2 meters measurement requirement to 120 metrical scale spaces; According to measuring optional stainless steel electrode (small scale) and the copper electrode (large scale) selected of yardstick.
Plate carries soil solute migration imaging spike software, the operation that the identification touch-screen sends, send instruction and receive echo back data to measurement and control unit, at first data are converted to resistivity according to measured value and interpolar relation, determine the room and time corresponding relation of measured value then, again according to resistivity---the concentration model of type of solutes correspondence, determine the transition process of solute, and by the definite color template of population parameter distribution, select suitable dimensional properties to press room and time distribution output tracking image, the transition process of reflection solute.
Software comprises program interface and software function module by the .NET of the Microsoft exploitation that develops software, and program interface is realized drawing and the Presentation Function of graphic interface; Software function module realize data model conversion, communicate by letter, control the command process function.After the equipment laying is ready, start starts spike software automatically, in program interface, also preserve by configuration parameters such as touch screen input electrode number, method of testing, type of solutes, concentration, after finishing initial setting up, enter the ambient field test process, program sends to steering order measurement and control unit and receives the passback data by the RS232 serial communication port according to selected measuring method and parameter.
The present invention is provided for the imaging tracing method of measured soil solute migration simultaneously, specifically may further comprise the steps:
Step 1: with reference to figure 1,2, the soil solute migration imaging tracking device of embodiment is used for soil static field (no solute penetration) and measures.Seven major parts of Fig. 1 have been installed integrated.Measuring at first selected yardstick and the electrode type measured in place,, cable is connected to device cable connecting interface by equidistantly laying electrode.The device for opening power supply starts soil solute migration imaging spike software, by touch-screen operation interface is operated, and projects such as electrode pole span, number of poles, metering system (swashing electrode and potential electrode relation), electrode type, sharp electricity time are set; Configuration parameter is sent to TT﹠C system through communication system, TT﹠C system MCU receives instruction control and swashs circuit and multiplexer (MUX, to swash electric signal and output to counter electrode, multiplexer (MUX gating potential electrode simultaneously is connected to metering circuit, electric signal is converted into digital signal through sampling modulate circuit, wide region gain amplifying circuit, high-precision adc, handles the back passback via MCU and gives operation processing unit; Device is finished one group of space distribution numerical measuring according to selected metering system; Operation processing unit is converted to the measured value that returns resistivity and determines the volume coordinate that each value is corresponding according to configuration parameter; After treating that one group of data is all obtained, select color template, drawing image according to the measured value distribution range.Configuration parameter, measurement result, color template, view data are all stored with document form.According to field condition and measurement demand, can be once to the duplicate measurements of static field data, measuring accuracy is guaranteed in verification each other.
Step 2: with reference to figure 1,2,3, the soil solute migration imaging tracking device of embodiment is used for soil solute process of osmosis spike imaging.Be equipped with the solute nominal concentration, electrode pole span, number of poles, metering system, electrode type be set in software, swash projects such as electricity time, type of solutes, nominal concentration, measuring period; The optional setting measurement termination time; When beginning to permeate, opens solute measuring process, according to program process of osmosis is carried out the room and time laminar analysis measurement, arithmetic processing system software is realized the process of osmosis digital imagery by concentration-resistivity models, and image shows with space plane, upgrades by time of penetration; Also can dynamically show the dynamic changing process of surveying data institute token image.Measuring process can stop or manually stopping by control system in the measurement termination time.Data such as solute feature, configuration parameter, measurement result, color template, dynamic image are all stored with document form.
The soil solute migration imaging tracking device of step 3: embodiment is used for the trend prediction of soil solute process of osmosis.In the solute penetration process, software is chosen different spaces distribution reference point, according to solute parameter and concentration-resistivity saturated model the data of real-time collection is carried out trend prediction or historical data is carried out the theoretical analysis that the off-line prediction is used for model.Predicting the outcome, it is for reference to be depicted as trend curve.
Claims (7)
1. an imaging tracing system that is used for soil solute migration is characterized in that, comprising:
Touch-screen, display unit, electric signal excite unit, multichannel control module, operation processing unit, measurement and control unit, potential electrode;
Display unit is connected with the single board computer of operation processing unit by the LVDS/TTL digital display interface, controller on the touch screen links to each other with the USB interface of single board computer by USB interface, touch screen be installed in display unit display screen directly over, and and display screen overlap, the touch area is identical with display area size;
Measurement and control unit is connected with the single board computer of operation processing unit by the RS232 serial communication interface; Measurement and control unit drives the multichannel control module by digital output port, controls electric signal simultaneously and excites the unit to insert the multichannel control module;
The multichannel control module is subjected to the drive controlling of measurement and control unit, excites the drive current of unit to insert corresponding potential electrode electric signal, simultaneously voltage measurement electrodes is strobed into the metering circuit of measurement and control unit; Measurement and control unit is sampled to the electric signal that electric signal excites the unit to output to electrode simultaneously, measures the size of actual output current.
2. the imaging tracing system that is used for soil solute migration according to claim 1 is characterized in that:
Described operation processing unit adopts the high-performance single board computer to constitute, and comprises storer and solid-state electronic dish, electric board installing operating system and soil solute migration imaging spike software.
3. the imaging tracing system that is used for soil solute migration according to claim 1 is characterized in that:
Described display unit is made of very color highlighted liquid crystal display, comprises image displaying part and operation and control interface.
4. the imaging tracing system that is used for soil solute migration according to claim 1 is characterized in that:
Described touch-screen is corresponding with graphical operation and control interface, can directly click on touch-screen by pointer, finger, realizes the button on the interface, combobox, window, combo box etc. are operated.
5. the imaging tracing system that is used for soil solute migration according to claim 1 is characterized in that:
Described measurement and control unit is made up of 32 MCU control panels, metering circuit, control circuits, described MCU is 32 8-digit microcontrollers of ATMEL AT91 series built-in FLASH, Programmable Logic Controller is 8255, the ICL7650 chopping zero-stabilizing amplifier is selected in preposition input for use, carry out program control amplification by the CD4051 analog switch, modulus conversion chip is AD574.
6. according to each described imaging tracing system that is used for soil solute migration in the claim 1 to 5, it is characterized in that:
Voltage measurement electrodes in the described potential electrode is through the preposition input stage of the relay array access metering circuit of multichannel control module, and the input stage enlargement factor realizes the enlargement factor adjustment by MCU analog switch selected topic resistor network, and filtering circuit is a low-pass filter.
7. an imaging tracing method that is used for soil solute migration is characterized in that, may further comprise the steps:
Selected yardstick and the electrode type measured by equidistantly laying electrode, is connected to device cable connecting interface with cable;
Electrode pole span, number of poles, metering system, electrode type are set, swash the electricity time, configuration parameter is sent to measurement and control unit through communication system, the MCU of measurement and control unit receives instruction control and swashs circuit and multiplexer (MUX, to swash electric signal and output to counter electrode, multiplexer (MUX gating potential electrode simultaneously is connected to metering circuit, electric signal is converted into digital signal through sampling modulate circuit, wide region gain amplifying circuit, high-precision adc, handles the back passback via MCU and gives operation processing unit;
Operation processing unit is converted to the measured value that returns resistivity and determines the volume coordinate that each value is corresponding according to configuration parameter; After treating that one group of data is all obtained, select color template, drawing image according to the measured value distribution range.Configuration parameter, measurement result, color template, view data are all stored with document form;
Be equipped with the solute nominal concentration, electrode pole span, number of poles, metering system, electrode type be set in software, swash electricity time, type of solutes, nominal concentration, measuring period;
Process of osmosis is carried out the room and time laminar analysis measurement, and arithmetic processing system software is realized the process of osmosis digital imagery by concentration-resistivity models, and image shows with space plane, upgrades by time of penetration;
Choose different spaces distribution reference point, according to solute parameter and concentration-resistivity saturated model the data of real-time collection are carried out trend prediction or historical data is carried out the theoretical analysis that the off-line prediction is used for model, predicting the outcome, it is for reference to be depicted as trend curve.
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| CN201010179177A CN101852755B (en) | 2010-05-17 | 2010-05-17 | Imaging and tracing system and method for measuring soil solute migration |
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| CN201010179177A CN101852755B (en) | 2010-05-17 | 2010-05-17 | Imaging and tracing system and method for measuring soil solute migration |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424760A (en) * | 2015-11-23 | 2016-03-23 | 西南林业大学 | Calibration method for soil resistivity and soil water content of rocky mountainous area |
| CN107290503A (en) * | 2017-06-20 | 2017-10-24 | 武汉大学 | The method that frozen soil reclaimed water unsaturation stream is moved and solute migration flux and equivalent parameters are monitored |
| US11934652B2 (en) | 2020-10-14 | 2024-03-19 | Samsung Electronics Co., Ltd. | Display apparatus and control method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6090267A (en) * | 1998-07-17 | 2000-07-18 | Timberline Instruments, Inc. | Methods and apparatus for quantitative analysis of a sample |
| JP2005013786A (en) * | 2003-06-23 | 2005-01-20 | Gifu Prefecture | Estimation method and estimation program of amount of heavy metal flowing out of soil |
| CN1793881A (en) * | 2005-12-20 | 2006-06-28 | 中国科学院水利部水土保持研究所 | Automatic determination device of soil moisture solute moving parameter |
-
2010
- 2010-05-17 CN CN201010179177A patent/CN101852755B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6090267A (en) * | 1998-07-17 | 2000-07-18 | Timberline Instruments, Inc. | Methods and apparatus for quantitative analysis of a sample |
| JP2005013786A (en) * | 2003-06-23 | 2005-01-20 | Gifu Prefecture | Estimation method and estimation program of amount of heavy metal flowing out of soil |
| CN1793881A (en) * | 2005-12-20 | 2006-06-28 | 中国科学院水利部水土保持研究所 | Automatic determination device of soil moisture solute moving parameter |
Non-Patent Citations (1)
| Title |
|---|
| 《土壤学报》 20090731 王康等 土壤非均匀水流运动和溶质迁移显色示踪方法研究 第46卷, 第4期 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424760A (en) * | 2015-11-23 | 2016-03-23 | 西南林业大学 | Calibration method for soil resistivity and soil water content of rocky mountainous area |
| CN107290503A (en) * | 2017-06-20 | 2017-10-24 | 武汉大学 | The method that frozen soil reclaimed water unsaturation stream is moved and solute migration flux and equivalent parameters are monitored |
| US11934652B2 (en) | 2020-10-14 | 2024-03-19 | Samsung Electronics Co., Ltd. | Display apparatus and control method thereof |
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| CN101852755B (en) | 2012-10-10 |
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