CN201653960U - Imaging tracing device for measurement of soil solute transport - Google Patents
Imaging tracing device for measurement of soil solute transport Download PDFInfo
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- CN201653960U CN201653960U CN201020201001XU CN201020201001U CN201653960U CN 201653960 U CN201653960 U CN 201653960U CN 201020201001X U CN201020201001X U CN 201020201001XU CN 201020201001 U CN201020201001 U CN 201020201001U CN 201653960 U CN201653960 U CN 201653960U
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Abstract
The utility model relates to the field of image tracing and imaging technology, especially to an imaging tracing system and an imaging tracing method for the measurement of soil solute transport. The imaging tracing device comprises a touch screen, a display unit, an electric signal excitation signal, a multipath control unit, an operation processing unit, a measurement and control unit and a measurement electrode, wherein the display unit is connected with a single board computer of the operation processing unit via an LVDS/TTL digital display interface, a controller on the touch screen is connected with a USB interface of the single board computer via a USB interface, the measurement and control unit is connected with the single board computer of the operation processing unit via an RS232 serial communication interface; and the measurement and control unit drives the multipath control unit, via a digital output port and simultaneously controls the electric signal excitation signal to access to the multipath control unit. The imaging tracing device is suitable for solutes in various types and having various concentrates, can satisfy the measurement of large-scale and small-scale osmosis models simultaneously, is capable of reflecting the corresponding relationship of concentrate and resistivity of the solute, enhances system reliability, and can meet the demands of long-term imaging tracing measurement of solute transport.
Description
Technical field
The utility model relates to image spike and technical field of imaging, relates in particular to a kind of imaging tracking device 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.
The utility model content
Technical matters at above-mentioned existence, the purpose of this utility model provides a kind of imaging tracking device 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 utility model 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 the current of area domain sizes;
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 excites the unit to be electrically connected with the multichannel control module by electric signal;
The multichannel control module is electrically connected with potential electrode, and potential electrode is electrically connected with measurement and control unit.
Described operation processing unit adopts the high-performance single board computer to constitute, and comprises storer and solid-state electronic dish.
Described display unit is made of very color highlighted liquid crystal display, comprises image displaying part and operation and control interface.
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 ATMELAT91 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 filtering circuit is a low-pass filter.
The utlity model has following advantage and good effect:
1) the utility model is applicable to the solute of all kinds and concentration, can satisfy large scale and small scale saturated model simultaneously and measure, can reflect the corresponding relation of solute concentration and resistivity, the solute migration process is exported with image mode, 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 of the imaging tracing system that is used for soil solute migration that provides of the utility model.
Fig. 2 is the composition structured flowchart of measurement and control unit in the utility model.
Fig. 3 is the process flow diagram of the imaging tracing method that is used for soil solute migration that provides of the utility model.
Embodiment
The utility model is described in further detail in conjunction with the accompanying drawings with specific embodiment below:
Principle of the present utility model 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 that the utility model provides, 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;
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 ATMELAT91 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.
Claims (5)
1. an imaging tracking device 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 the current of area domain sizes;
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 excites the unit to be electrically connected with the multichannel control module by electric signal;
The multichannel control module is electrically connected with potential electrode, and potential electrode is electrically connected with measurement and control unit.
2. the imaging tracking device 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.
3. the imaging tracking device 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 tracking device 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.
5. according to each described imaging tracking device 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 filtering circuit is a low-pass filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020201001XU CN201653960U (en) | 2010-05-17 | 2010-05-17 | Imaging tracing device for measurement of soil solute transport |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020201001XU CN201653960U (en) | 2010-05-17 | 2010-05-17 | Imaging tracing device for measurement of soil solute transport |
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| CN201653960U true CN201653960U (en) | 2010-11-24 |
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| CN201020201001XU Expired - Fee Related CN201653960U (en) | 2010-05-17 | 2010-05-17 | Imaging tracing device for measurement of soil solute transport |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345413A (en) * | 2020-09-18 | 2021-02-09 | 武汉大学 | Method for testing global distribution of infiltration water and inorganic solute under micro-spray irrigation condition |
-
2010
- 2010-05-17 CN CN201020201001XU patent/CN201653960U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345413A (en) * | 2020-09-18 | 2021-02-09 | 武汉大学 | Method for testing global distribution of infiltration water and inorganic solute under micro-spray irrigation condition |
| CN112345413B (en) * | 2020-09-18 | 2021-12-17 | 武汉大学 | Method for testing global distribution of infiltration water and inorganic solute under micro-spray irrigation condition |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20130517 |