CA2375891A1 - Portable soil nutrient analyzer - Google Patents
Portable soil nutrient analyzer Download PDFInfo
- Publication number
- CA2375891A1 CA2375891A1 CA 2375891 CA2375891A CA2375891A1 CA 2375891 A1 CA2375891 A1 CA 2375891A1 CA 2375891 CA2375891 CA 2375891 CA 2375891 A CA2375891 A CA 2375891A CA 2375891 A1 CA2375891 A1 CA 2375891A1
- Authority
- CA
- Canada
- Prior art keywords
- soil
- test
- sample
- attribute
- liquid
- 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.)
- Abandoned
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Pathology (AREA)
- Immunology (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Geology (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Remote Sensing (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Disclosed is a portable device for use at a remote field test site for measuring at least one soil attribute in a soil sample, comprising a test sample chamber. A
manually operable soil collection unit has a hand-graspable portion, a soil receiving portion and a transfer portion for transferring a soil sample from the soil receiving portion to the test sample chamber. A liquid delivery unit provides for the delivery of a liquid to the test sample chamber to form, with the soil sample, a test mixture. An analysis unit is also provided for probing the liquid test mixture in the test sample chamber for generating a signal representative of the soil attribute, the analysis unit including a plurality of probes for sensing one or more soil attributes and for generating a signal corresponding to the one or more soil attributes, a signal processing portion for processing the signals generated by the electrodes, and a display portion for displaying a resultant value of the one or more soil attribute.
manually operable soil collection unit has a hand-graspable portion, a soil receiving portion and a transfer portion for transferring a soil sample from the soil receiving portion to the test sample chamber. A liquid delivery unit provides for the delivery of a liquid to the test sample chamber to form, with the soil sample, a test mixture. An analysis unit is also provided for probing the liquid test mixture in the test sample chamber for generating a signal representative of the soil attribute, the analysis unit including a plurality of probes for sensing one or more soil attributes and for generating a signal corresponding to the one or more soil attributes, a signal processing portion for processing the signals generated by the electrodes, and a display portion for displaying a resultant value of the one or more soil attribute.
Description
PORTABLE SOIL NUTRIENT ANALYZER
BACKGROUND OF THE INVENTION
1. FIELD OF THE INVENTION
The invention concerns a portable device to analyze soils and methods for conducting analysis at a remote field site, such as for example, a farm field.
BACKGROUND OF THE INVENTION
1. FIELD OF THE INVENTION
The invention concerns a portable device to analyze soils and methods for conducting analysis at a remote field site, such as for example, a farm field.
2. DESCRIPTION OF THE RELATED ART
The current practice of soil analysis is to collect soil samples from a subject site and send them to a laboratory for processing. This method is time consuming and expensive.
Typically, at small or family-owned farms, golf courses or in residential lawn care situations, no measurements of soil characteristics are done, and soil management is not a calculated process. Soil properties can vary at any given time and are influenced by both natural (i.e.
weather) and anthropogenic (i.e. land-use practices) parameters. It is necessary to obtain accurate soil information to maximize the efficiency and cost effectiveness of soil management. To be competitive, there is a need to apply fertilizers to get maximum growth per acre for the least amount of dollars spent . For example, some farmers apply a standard amount of manure or fertilizer to their farm fields on a yearly basis without knowing if the field actually requires it. This can lead to nutrient overloading, which is not only wasteful and but also can be detrimental to crop production and the environment.
A number of portable soil analysis kits are from LAMOTTE CO., of Chestertown MD, USA. These kits make use of "wet'' chemistry wherein a clear sample solution is collected from a soil sample and the clear sample is later subjected to reagent testing where color changes indicate the presence of nutrients (and their strength) as well as pH. Though these test kits have served their intended purpose well, they do suffer from the disadvantage of requiring the farmer to carry out a number of different wet chemistry laboratory steps in order to conduct the test. Such wet chemistry laboratory steps are not easily conducted on location in a field.
It is therefore an object of the present invention to provide a novel device and method for soil analysis.
SUMMARY OF THE INVENTION
Briefly stated, the invention provides a portable device for use at a remote field test site for measuring at least one soil attribute in a soil sample at the remote field test site, comprising:
- a test sample chamber;
- a manually operable soil collection unit having a hand-graspable portion, a soil receiving portion and a transfer portion for transferring a soil sample from the soil receiving portion to the test sample chamber;
- a liquid delivery unit for delivering a liquid to the test sample chamber to form, with the soil sample, a test mixture; and - an analysis unit for probing the liquid test mixture in the test sample chamber for generating a signal representative of the soil attribute, the analysis unit including at least one plurality of probes for sensing one or more soil attributes and for generating a signal corresponding to the one or more soil attributes, a signal processing portion for processing the signals generated by the probe, and a display portion for displaying a resultant value of the one or more soil attributes.
Preferably, the soil collection unit is operable to penetrate the ground at the remote field test site. In one embodiment, the soil collection unit has a hollow blade portion, the blade portion being located near the an entry point of the soil receiving portion.
More preferably, the soil receiving portion is formed from a cylindrical member having a lower end region bearing the blade portion.
Preferably, the soil receiving portion is arranged to receive a fixed volume of soil. At least one soil volume setting member projects outwardly from the cylindrical member. The soil volume setting member is positioned along the cylindrical member to engage the ground surface when the cylindrical member is at a predetermined depth, thereby to control the volume of soil being passed into the soil receiving portion. In one embodiment a pair: of soil value setting members extending outwardly from opposite sides of the cylindrical member.
Preferably, the transfer portion includes a plunger for ejecting the soil sample from the soil receiving portion. The plunger has a cross member extending through its upper end region, to serve as a handle.
In one embodiment, the liquid delivery unit is a syringe, but may alternatively be a separate container or a hand operated or motorized liquid pump.
Preferably, the probes include one or more electrodes to measure one or more soil attributes. The electrodes may come in a number of different forms including chemical sensors, pH sensors and the like. In this case, the signal processing portion includes a controller, a number of input wire jacks and a number of wire leads joining the input wire jacks to the one or more electrodes. In one example, the analysis unit includes two electrodes, one to measure pH and the other to measure nitrates. Preferably, each electrode has a marking indicative of the soil attribute being tested.
The display portion preferably includes a liquid crystal display, a light emitting diode display, or a plasma display, but may also be provided in a number of other electronic or mechanical forms, such as a printer, an audio signal or the like.
In another of its aspects, the present invention provides a method of analyzing the attributes of soil one or more samples on location comprising the steps of:
- collecting a soil sample from a test site;
- transferring the soil sample to a chamber;
The current practice of soil analysis is to collect soil samples from a subject site and send them to a laboratory for processing. This method is time consuming and expensive.
Typically, at small or family-owned farms, golf courses or in residential lawn care situations, no measurements of soil characteristics are done, and soil management is not a calculated process. Soil properties can vary at any given time and are influenced by both natural (i.e.
weather) and anthropogenic (i.e. land-use practices) parameters. It is necessary to obtain accurate soil information to maximize the efficiency and cost effectiveness of soil management. To be competitive, there is a need to apply fertilizers to get maximum growth per acre for the least amount of dollars spent . For example, some farmers apply a standard amount of manure or fertilizer to their farm fields on a yearly basis without knowing if the field actually requires it. This can lead to nutrient overloading, which is not only wasteful and but also can be detrimental to crop production and the environment.
A number of portable soil analysis kits are from LAMOTTE CO., of Chestertown MD, USA. These kits make use of "wet'' chemistry wherein a clear sample solution is collected from a soil sample and the clear sample is later subjected to reagent testing where color changes indicate the presence of nutrients (and their strength) as well as pH. Though these test kits have served their intended purpose well, they do suffer from the disadvantage of requiring the farmer to carry out a number of different wet chemistry laboratory steps in order to conduct the test. Such wet chemistry laboratory steps are not easily conducted on location in a field.
It is therefore an object of the present invention to provide a novel device and method for soil analysis.
SUMMARY OF THE INVENTION
Briefly stated, the invention provides a portable device for use at a remote field test site for measuring at least one soil attribute in a soil sample at the remote field test site, comprising:
- a test sample chamber;
- a manually operable soil collection unit having a hand-graspable portion, a soil receiving portion and a transfer portion for transferring a soil sample from the soil receiving portion to the test sample chamber;
- a liquid delivery unit for delivering a liquid to the test sample chamber to form, with the soil sample, a test mixture; and - an analysis unit for probing the liquid test mixture in the test sample chamber for generating a signal representative of the soil attribute, the analysis unit including at least one plurality of probes for sensing one or more soil attributes and for generating a signal corresponding to the one or more soil attributes, a signal processing portion for processing the signals generated by the probe, and a display portion for displaying a resultant value of the one or more soil attributes.
Preferably, the soil collection unit is operable to penetrate the ground at the remote field test site. In one embodiment, the soil collection unit has a hollow blade portion, the blade portion being located near the an entry point of the soil receiving portion.
More preferably, the soil receiving portion is formed from a cylindrical member having a lower end region bearing the blade portion.
Preferably, the soil receiving portion is arranged to receive a fixed volume of soil. At least one soil volume setting member projects outwardly from the cylindrical member. The soil volume setting member is positioned along the cylindrical member to engage the ground surface when the cylindrical member is at a predetermined depth, thereby to control the volume of soil being passed into the soil receiving portion. In one embodiment a pair: of soil value setting members extending outwardly from opposite sides of the cylindrical member.
Preferably, the transfer portion includes a plunger for ejecting the soil sample from the soil receiving portion. The plunger has a cross member extending through its upper end region, to serve as a handle.
In one embodiment, the liquid delivery unit is a syringe, but may alternatively be a separate container or a hand operated or motorized liquid pump.
Preferably, the probes include one or more electrodes to measure one or more soil attributes. The electrodes may come in a number of different forms including chemical sensors, pH sensors and the like. In this case, the signal processing portion includes a controller, a number of input wire jacks and a number of wire leads joining the input wire jacks to the one or more electrodes. In one example, the analysis unit includes two electrodes, one to measure pH and the other to measure nitrates. Preferably, each electrode has a marking indicative of the soil attribute being tested.
The display portion preferably includes a liquid crystal display, a light emitting diode display, or a plasma display, but may also be provided in a number of other electronic or mechanical forms, such as a printer, an audio signal or the like.
In another of its aspects, the present invention provides a method of analyzing the attributes of soil one or more samples on location comprising the steps of:
- collecting a soil sample from a test site;
- transferring the soil sample to a chamber;
- mixing the soil sample with a liquid and under conditions sufficient to form a test mixture; and - depositing, in succession, a plurality of electrodes into the test mixture to measure a plurality of soil attributes of the test mixture.
Preferably, the liquid includes water with a pH of about 7.0, but may include other liquids such as reagents which are capable of increasing the amount of nutrients being withdrawn from the soil sample into the liquid test mixture, for example.
In another of its aspects, the present invention provides a portable kit to measure and display a plurality of soil, comprising:
- a hand-held collection unit to collect a volume of soil;
- a mixing container for receiving the volume of soil together with a liquid to form a test mixture;
- a plurality of probes for probing the test mixture and for generating different signals, each representative of a different soil attribute; and - an analysis unit which is operative with the electrodes to measure the different soil attributes and to provide an output signal representative of the different soil attribute measurements.
In one embodiment, the kit is provided with a protective case to carry the hand-held collection unit, the mixing container, the plurality of probes and the analysis unit, along with a mixing solution container to contain a mixing solution, as well as a plurality of cover elements to protect the probes and a receptacle for storing the cover elements.
Preferably, the liquid includes water with a pH of about 7.0, but may include other liquids such as reagents which are capable of increasing the amount of nutrients being withdrawn from the soil sample into the liquid test mixture, for example.
In another of its aspects, the present invention provides a portable kit to measure and display a plurality of soil, comprising:
- a hand-held collection unit to collect a volume of soil;
- a mixing container for receiving the volume of soil together with a liquid to form a test mixture;
- a plurality of probes for probing the test mixture and for generating different signals, each representative of a different soil attribute; and - an analysis unit which is operative with the electrodes to measure the different soil attributes and to provide an output signal representative of the different soil attribute measurements.
In one embodiment, the kit is provided with a protective case to carry the hand-held collection unit, the mixing container, the plurality of probes and the analysis unit, along with a mixing solution container to contain a mixing solution, as well as a plurality of cover elements to protect the probes and a receptacle for storing the cover elements.
In another of its aspects, the present invention provides a method of conducting soil analysis tests on location at a remote field test site, comprising the steps of:
a) providing a kit which includes a soil collection unit for collecting a soil sample, at least one test chamber for containing a collected soil sample for analysis, at least one receptacle carrying a liquid for forming a test mixture with the soil sample in the test chamber. the liquid being selected according to the soil attribute being tested, at least one electrode for immersion into the test mixture for measuring a soil attribute and an electronic signal processing unit for processing a signal from the electrode representative of the soil attribute;
b) proceeding to a remote field test site;
c) grasping the soil collection unit and inserting the soil collection unit into the ground 1 S at the remote field test site to retrieve a soil sample;
d) transferring the soil sample from the soil collecting unit to the test chamber;
e) grasping the receptacle and delivering the liquid to the test chamber and under conditions sufficient to form a test mixture;
f) grasping the electrode and depositing it in the test mixture, under conditions allowing the electrode to generate an electrical signal representative of the soil attribute being tested;
g) recording an output from the electronic signal processing unit and correlating the output with one or more selected coordinates of the remote field test site;
h) preparing the kit for another soil analysis test; and then carrying out one of the following steps:
i) repeating steps b) to h) for another soil sample at the remote outside field test site; or j) proceeding to another remote outside field test site to repeat steps b) to h).
In one embodiment, step t) includes the steps of grasping a first electrode to measure pH, and then grasping a second electrode to measure Nitrate concentrations in the soil sample.
In another embodiment, step f) further includes the steps of separately grasping, in step by step fashion, a plurality of electrodes to measure one or more of potassium, phosphorous, iron, copper, zinc, sodium, and calcium. Step g) may also include the step of recording the specil7c location of the remote field test site, such as by way of a GPS
reading.
In another embodiment, the method further comprises the step of establishing a communication link between the analysis unit and a general purpose computer for transferring a recorded output thereto.
In one embodiment, the device is provided with an agitation unit for agitating the test mixture. The agitating unit may include a hand held mixing device, a stir stick or some other form of mixing device.
The device may measure a range of soil characteristics such as pH and the presence of nutrients such as nitrate, while others such as potassium and phosphorus are contemplated.
The user of the device is able to analyze the soil on location as frequently as desired. This will allow the user to accurately determine soil parameters that will make soil management much more precise and efficient. For example, timing and amount of fertilizer application can be customized to suit particular crop needs, thereby conserving resources and maximizing profit. This would also reduce unnecessary input of nutrients and other additives that can be harmful to the environment.
In still another of its aspects, the present invention provides a computer implemented method for recording soil analysis tests, comprising the steps of comprising the steps o~
G
a) storing a data base of soil attribute values and a reference value for each soil attribute value;
b) receiving soil test data originating from an electrode for a given soil sample;
c) generating a test value corresponding to the soil test data;
d) comparing the test value with reference values in the data base to find a match;
and e) reporting the soil attribute value corresponding to the matched reference value.
In still another of its aspects, the present invention provides a computer program product recorded on a computer readable medium, comprising the computer executable steps of:
f) storing a data base of soil attribute values and a reference value for each soil attribute value;
g) receiving soil test data originating from an electrode for a given soil sample;
h) generating a test value corresponding to the soil test data;
i) comparing the test value with reference values in the data base to find a match;
and j) reporting the soil attribute value corresponding to the matched reference value.
In still another of its aspects, the present invention provides a computer program product recorded on a computer readable medium, comprising the computer executable steps of:
a) enabling the computer to receive location data relating to the location where a soil sample was colleted, for a given soil sample;
b) enabling an input port of a computer to receive soil test data originating tiom an electrode for a given soil sample;
c) storing the soil test data in a designated computer memory region;
d) repeating steps a to c) for each of a plurality of soil samples; and e) tabulating the results in a useful format.
Thus, the present invention has, among others discussed herein, the technical effect of providing an improved method of soil analysis by easing the mental burden on the user from manually tabulating soil test results and correlating them with the location in which the soil sample was taken.
BRIEF DESCRIPTION OF THE DRAWINGS
Several preferred embodiments of the present invention will be provided, by way of examples only, with reference to the appended drawings, wherein, Figure I is a perspective view of container for a soil analysis device;
Figure 2 is a perspective view of several components of a soil analysis device;
Figure 3 is a part-fragmentary perspective view of one of the components of the device of figure 2;
Figure 4 is a schematic view of another of the components of figure 2;
Figure 5 is a schematic view of a portion of one of the components of figure 4;
Figure 6 is a schematic sequential view of the component of figure 3 in operation; and Figure 7 is another schematic view of the component of figure 5.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to the figures, particularly figure 2 there is provided a portable device 10 for measuring at least one soil attribute in at least one soil sample on location.
The device is self=contained, in kit form, in a carrying case 12 and has a number of components for the on-site collection and testing of soil. The carrying case has a number of compartments 12a, each to receive one of the components. A number of these components are to be used in the preparation of a test sample while others are to be used to analyze the test sample, using a method as will be described.
Referring to figures 2 and 3, the device has a manually operable soil collection unit 14 having a hand-graspable portion 16 and a soil receiving portion 18. The soil receiving portion 18 includes a cylindrical member with a lower end 18a which is formed to penetrate the ground surface by way of a beveled surface 18b. A pair of soil vohune setting members, in the form of wings 20, extend outwardly from opposite sides of the cylindrical member to function as a pair of foot pads allowing a user to press the lower end of the cylindrical member into the ground, and draw a soil sample into the soil receiving portion.
Alternatively, the wings may be used as a target for pounding the soil collection unit into the ground using the rubber mallet shown at 24. Located within the cylindrical member is a transfer portion in the form of a plunger 26 which, in this case, is a blank of material slidably mounted therein for ejecting the soil sample from the soil receiving portion.
The plunger 26 has a cross bar 26a to serve as a handle, while a cord 28 is joined to both foot pads to assist in retracting the soil collection unit from the ground, as will be described.
Referring to f pure 2, the device has a test chamber in the form of a mixing container 40a for preparing the test sample, which in this case is a receptacle with a removable lid. The device has a number of other containers shown at 40b, 40c and 40d which are used for other functions, such as the temporary holding of a calibration liquid.
An agitation unit is provided for agitating the test mixture in the test chamber. In this case, the agitation unit is in the form of a relatively short plastic stirring bar 42.
Alternatively, the agitation unit may be a hand mixer having a lower end with a number of laterally extending formations and a hand-held spinning portion for spinning the formations, or some other form of mixing device. A syringe 44 is provided for delivering liquid to the container 40a to form the test mixture as will be described.
The device also includes an analysis unit 50 for probing the liquid test mixture in the test sample chamber for generating a signal representative of the soil attribute. The analysis I S unit includes a plurality of probes, this case electrodes 51, 52, (such as those available under the trade name SENTEK, UK and ANALYTICAL SENSORS INC, USA
together with wire leads S l a, 52a for sensing one or more soil attributes and for generating a signal cowesponding to the one or more soil attributes. A signal processing portion 54 has two outlet jacks 56a, 56b to couple with the wire leads S l a, 52a, to process the signals generated by the electrodes, and a liquid crystal display portion is shown at 58 for displaying a resultant value of the one or more soil attributes. If desired, each probe may be provided with a marking indicative of the soil attribute being tested.
The signal processing portion 54 has a micro controller 60 (for example that sold under the trade name MICROCHIP, USA which receives signals from the electrodes on a pair of micro controller inputs through a signal processing circuit 60a. The micro controller has a chip 60b (for example that sold under the trade name MICROCHIP, USA
which contains a data base storing digital values for each of the soil attributes being tested. For example, in the case of the soil attribute "ppm nitrate", the database includes a range of digital values for a corresponding range of nitrate concentrations. The micro controller receives an analog signal from the electrode and converts it to a test digital value which is then compared against the values in the database. The micro controller then selects one of the values in the data base closest to the test digital value and then conveys a signal to the display portion to display the corresponding value of the soil attribute. For example for a test sample having an actual ppm nitrate level of, for example, 25, it will generate an analog signal proportional to that particular ppm nitrate level. The micro controller will then compare the converted test digital value and, in this example, matches the test digital value with the database digital value corresponding to 24.98, thereby leading to the message "NITRATE 24.9" or a similar message appearing on the display portion.
The device may thus be used to test soil on location to allow for the immediate determination of proper soil treatments and management. The device measures at least one soil attribute in at least one soil sample on location.
Referring to figure 4, the analysis unit may also be provided with a manual data input portion 62 in which a user can record extra data concerning a particular soil measurement, I 5 such as a physical location, a code for a physical location, or a GPS
signal. Alternatively, the analysis unit may be provided with a GPS input portion 64 in order to obtain the GPS
location electronically and then have the functionality to correlate the particular soil attribute measurement with the GPS location.
The analysis unit can also be provided with a memory function in order that the soil attribute measures (and the GPS location information if applicable) can be recorded during the entire remote field test, for example by way of a memory function within the controller or a separate recording device through a computer uplink connection. The analysis unit may also be coupled to a general purpose notebook or desktop computer 68 to store the data or, in addition, perform some of the signal processing functions done by the micro-controller. In this case, the data base carrying the reference values for the soil attributes may be stored in a computer memory module and the computer may be configured to carry out the comparison of the test digital value for the soil test with the reference values in the database. In this case, the computer may provide the functionality for an automatic soil clinic system where the computer is configured to generate a report with suggests on improving soil quality.
In addition, the analysis unit may simply be a transfer link between the electrodes and the computer, leaving the signal processing and display functions entirely with the computer.
If desired, in this case, the carrying case may be arranged to carry the computer as well as the other components of the kit as described.
In this case, the computer may be networked with other computers in order to share data from the soil analysis testing. The system, in this case, may thus involve the use several general purpose computers, for example those sold under the trade names APPLE
or IBM, or clones thereof, which are programmed with operating systems known by the trade names WINDOWS, LINUX or other well known or lesser known equivalents of these. The system may involve pre-programmed software using a number of possible languages or a custom designed version of a programming software sold under the trade name ACCESS or similar programming software. The computer network may be a wired local area network, or a wide area network such as the Internet, or a combination of the two, without or without added I S security, authentication protocols, or under "peer-to-peer" or "client-server" or other networking architectures. The network may also be a wireless network or a combination of wired and wireless networks. The wireless network may operate under frequencies such as those dubbed 'radio frequency' or "RF" using protocols such as the 802.11, TCP/IP, BLUE
TOOTH and the like, or other well known Internet, wireless, satellite or cell packet protocols.
The system may, alternatively, be executed on a single general purpose computer or on a single custom built computer which is dedicated to the function of the system alone.
The device may be used as follows. First, the kit is assembled to include the components as mentioned hereinabove. The user may then carry the kit to a remote field test site. Once there, the user selects an appropriate location in which to penetrate the ground to obtain the soil sample.
Referring to step a) of figure 6, the user grasps the soil collection unit and positions it above the ground surface. The user then inserts it into the ground at the remote field test site by depressing the wings either with his hands, his feet, the rubber mallet or another suitable tool. 'The cylindrical portion is then pressed into the ground up to a depth where the wings are sitting on the ground surface (as is shown in step c)). Conveniently, this means that the volume of soil actually present in the cylindrical portion will be approximately the same from one sample to the next, given of course the variations in soil density and the like.
The user them removes the soil collection from the ground using cord 28 and then orients the mouth of the soil collection portion over the mixing container 40a, whose lid has been removed. The user them grasps the handle of the plunger and transfers the material from the soil collection unit into the mixing container 40a.
The user them grasps the mixing container and delivers the liquid to the test chamber and under conditions sufficient to form a test mixture. This is done by grasping the syringe 44, opening the mixing container 40a carrying the liquid, drawing a predetermined volume of liquid into the syringe 44 and then delivering that predetermined volume of liquid into the mixing container 40a.
The user then grasps the stir rod and agitates or otherwise mixes the soil same and the liquid for a sufficient time and under the appropriate conditions to form a test mixture. For example, the soil may need to be in a location with an ambient temperature of above, say, 10 degrees Celsius.
The user then grasps the analysis unit and connects it with the two electrodes. With the analysis unit in its normal operating condition, the user then deposits one electrode in the test mixture, under conditions allowing the electrode to generate an electrical signal representative of the soil attribute being tested. This normally means waiting for the analysis unit to reach an equilibrium sensing condition, typically after a few minutes.
The analysis unit then displays a resultant value for the soil attribute being measured by that particular electrode. The user may, at this stage, record the value in a record log or alternatively enter a GPS signal using the manual data input portion 62 or the GPS input data portion 64, if provided. The user then selects the next electrode and inserts it into the test mixture and, as before, awaits the new soil attribute measurement.
The user may then prepare the kit for another soil analysis test and then repeat the procedure for another soil at that location or at another remote field test site.
The mixing solution is preferably distilled water which has a pH of about 7.0, but may include normal tap water. Even though a neutral distilled water is desirable, preliminary testing has shown that the results do not vary considerably by the use of other water such as potable tap water. This will, of course, increase the flexibility of the kit still further since neutral distilled water may not be available at all times when a measurement is necessary at a particular remote field test site. Other reagents may be also be used to draw nutrients from the soil into the liquid.
The electrodes may be protected by the use of protective covers, such as those provided by SENTEK, UK. The electrodes may also, if desired, be inserted into the test mixture at the same, it being understood that the analysis unit in the case would need the functionality to measure the two soil attributes successively. Because the electrodes are preferably protected by a covers, the electrodes may be cleaned by simply rinsing the electrode. As is known to those of skill in the art. the electrode may require calibrating unit before use and this involves the use of another container such as one of containers 40b to 40d, with a calibration liquid.
The electrodes may be inserted directly into the test mixture, or into a separate chamber containing the liquid portion of the test mixture which has isolated therefrom.
While the kit has been discussed in the context of soil, the kit could also be used to measure the water or soil over time, by way of a data logger that could be used, for example, to measure spring runoff in a wetland to measure the quantity of nutrient added over time. It is also contemplated that the device can be used to monitor the safety of drinking water, provided that the electrodes be selected which are suitable for water testing.
While the present invention has been described for what are presently considered the preferred embodiments, the invention is not so limited. To the contrary, the invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions
a) providing a kit which includes a soil collection unit for collecting a soil sample, at least one test chamber for containing a collected soil sample for analysis, at least one receptacle carrying a liquid for forming a test mixture with the soil sample in the test chamber. the liquid being selected according to the soil attribute being tested, at least one electrode for immersion into the test mixture for measuring a soil attribute and an electronic signal processing unit for processing a signal from the electrode representative of the soil attribute;
b) proceeding to a remote field test site;
c) grasping the soil collection unit and inserting the soil collection unit into the ground 1 S at the remote field test site to retrieve a soil sample;
d) transferring the soil sample from the soil collecting unit to the test chamber;
e) grasping the receptacle and delivering the liquid to the test chamber and under conditions sufficient to form a test mixture;
f) grasping the electrode and depositing it in the test mixture, under conditions allowing the electrode to generate an electrical signal representative of the soil attribute being tested;
g) recording an output from the electronic signal processing unit and correlating the output with one or more selected coordinates of the remote field test site;
h) preparing the kit for another soil analysis test; and then carrying out one of the following steps:
i) repeating steps b) to h) for another soil sample at the remote outside field test site; or j) proceeding to another remote outside field test site to repeat steps b) to h).
In one embodiment, step t) includes the steps of grasping a first electrode to measure pH, and then grasping a second electrode to measure Nitrate concentrations in the soil sample.
In another embodiment, step f) further includes the steps of separately grasping, in step by step fashion, a plurality of electrodes to measure one or more of potassium, phosphorous, iron, copper, zinc, sodium, and calcium. Step g) may also include the step of recording the specil7c location of the remote field test site, such as by way of a GPS
reading.
In another embodiment, the method further comprises the step of establishing a communication link between the analysis unit and a general purpose computer for transferring a recorded output thereto.
In one embodiment, the device is provided with an agitation unit for agitating the test mixture. The agitating unit may include a hand held mixing device, a stir stick or some other form of mixing device.
The device may measure a range of soil characteristics such as pH and the presence of nutrients such as nitrate, while others such as potassium and phosphorus are contemplated.
The user of the device is able to analyze the soil on location as frequently as desired. This will allow the user to accurately determine soil parameters that will make soil management much more precise and efficient. For example, timing and amount of fertilizer application can be customized to suit particular crop needs, thereby conserving resources and maximizing profit. This would also reduce unnecessary input of nutrients and other additives that can be harmful to the environment.
In still another of its aspects, the present invention provides a computer implemented method for recording soil analysis tests, comprising the steps of comprising the steps o~
G
a) storing a data base of soil attribute values and a reference value for each soil attribute value;
b) receiving soil test data originating from an electrode for a given soil sample;
c) generating a test value corresponding to the soil test data;
d) comparing the test value with reference values in the data base to find a match;
and e) reporting the soil attribute value corresponding to the matched reference value.
In still another of its aspects, the present invention provides a computer program product recorded on a computer readable medium, comprising the computer executable steps of:
f) storing a data base of soil attribute values and a reference value for each soil attribute value;
g) receiving soil test data originating from an electrode for a given soil sample;
h) generating a test value corresponding to the soil test data;
i) comparing the test value with reference values in the data base to find a match;
and j) reporting the soil attribute value corresponding to the matched reference value.
In still another of its aspects, the present invention provides a computer program product recorded on a computer readable medium, comprising the computer executable steps of:
a) enabling the computer to receive location data relating to the location where a soil sample was colleted, for a given soil sample;
b) enabling an input port of a computer to receive soil test data originating tiom an electrode for a given soil sample;
c) storing the soil test data in a designated computer memory region;
d) repeating steps a to c) for each of a plurality of soil samples; and e) tabulating the results in a useful format.
Thus, the present invention has, among others discussed herein, the technical effect of providing an improved method of soil analysis by easing the mental burden on the user from manually tabulating soil test results and correlating them with the location in which the soil sample was taken.
BRIEF DESCRIPTION OF THE DRAWINGS
Several preferred embodiments of the present invention will be provided, by way of examples only, with reference to the appended drawings, wherein, Figure I is a perspective view of container for a soil analysis device;
Figure 2 is a perspective view of several components of a soil analysis device;
Figure 3 is a part-fragmentary perspective view of one of the components of the device of figure 2;
Figure 4 is a schematic view of another of the components of figure 2;
Figure 5 is a schematic view of a portion of one of the components of figure 4;
Figure 6 is a schematic sequential view of the component of figure 3 in operation; and Figure 7 is another schematic view of the component of figure 5.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to the figures, particularly figure 2 there is provided a portable device 10 for measuring at least one soil attribute in at least one soil sample on location.
The device is self=contained, in kit form, in a carrying case 12 and has a number of components for the on-site collection and testing of soil. The carrying case has a number of compartments 12a, each to receive one of the components. A number of these components are to be used in the preparation of a test sample while others are to be used to analyze the test sample, using a method as will be described.
Referring to figures 2 and 3, the device has a manually operable soil collection unit 14 having a hand-graspable portion 16 and a soil receiving portion 18. The soil receiving portion 18 includes a cylindrical member with a lower end 18a which is formed to penetrate the ground surface by way of a beveled surface 18b. A pair of soil vohune setting members, in the form of wings 20, extend outwardly from opposite sides of the cylindrical member to function as a pair of foot pads allowing a user to press the lower end of the cylindrical member into the ground, and draw a soil sample into the soil receiving portion.
Alternatively, the wings may be used as a target for pounding the soil collection unit into the ground using the rubber mallet shown at 24. Located within the cylindrical member is a transfer portion in the form of a plunger 26 which, in this case, is a blank of material slidably mounted therein for ejecting the soil sample from the soil receiving portion.
The plunger 26 has a cross bar 26a to serve as a handle, while a cord 28 is joined to both foot pads to assist in retracting the soil collection unit from the ground, as will be described.
Referring to f pure 2, the device has a test chamber in the form of a mixing container 40a for preparing the test sample, which in this case is a receptacle with a removable lid. The device has a number of other containers shown at 40b, 40c and 40d which are used for other functions, such as the temporary holding of a calibration liquid.
An agitation unit is provided for agitating the test mixture in the test chamber. In this case, the agitation unit is in the form of a relatively short plastic stirring bar 42.
Alternatively, the agitation unit may be a hand mixer having a lower end with a number of laterally extending formations and a hand-held spinning portion for spinning the formations, or some other form of mixing device. A syringe 44 is provided for delivering liquid to the container 40a to form the test mixture as will be described.
The device also includes an analysis unit 50 for probing the liquid test mixture in the test sample chamber for generating a signal representative of the soil attribute. The analysis I S unit includes a plurality of probes, this case electrodes 51, 52, (such as those available under the trade name SENTEK, UK and ANALYTICAL SENSORS INC, USA
together with wire leads S l a, 52a for sensing one or more soil attributes and for generating a signal cowesponding to the one or more soil attributes. A signal processing portion 54 has two outlet jacks 56a, 56b to couple with the wire leads S l a, 52a, to process the signals generated by the electrodes, and a liquid crystal display portion is shown at 58 for displaying a resultant value of the one or more soil attributes. If desired, each probe may be provided with a marking indicative of the soil attribute being tested.
The signal processing portion 54 has a micro controller 60 (for example that sold under the trade name MICROCHIP, USA which receives signals from the electrodes on a pair of micro controller inputs through a signal processing circuit 60a. The micro controller has a chip 60b (for example that sold under the trade name MICROCHIP, USA
which contains a data base storing digital values for each of the soil attributes being tested. For example, in the case of the soil attribute "ppm nitrate", the database includes a range of digital values for a corresponding range of nitrate concentrations. The micro controller receives an analog signal from the electrode and converts it to a test digital value which is then compared against the values in the database. The micro controller then selects one of the values in the data base closest to the test digital value and then conveys a signal to the display portion to display the corresponding value of the soil attribute. For example for a test sample having an actual ppm nitrate level of, for example, 25, it will generate an analog signal proportional to that particular ppm nitrate level. The micro controller will then compare the converted test digital value and, in this example, matches the test digital value with the database digital value corresponding to 24.98, thereby leading to the message "NITRATE 24.9" or a similar message appearing on the display portion.
The device may thus be used to test soil on location to allow for the immediate determination of proper soil treatments and management. The device measures at least one soil attribute in at least one soil sample on location.
Referring to figure 4, the analysis unit may also be provided with a manual data input portion 62 in which a user can record extra data concerning a particular soil measurement, I 5 such as a physical location, a code for a physical location, or a GPS
signal. Alternatively, the analysis unit may be provided with a GPS input portion 64 in order to obtain the GPS
location electronically and then have the functionality to correlate the particular soil attribute measurement with the GPS location.
The analysis unit can also be provided with a memory function in order that the soil attribute measures (and the GPS location information if applicable) can be recorded during the entire remote field test, for example by way of a memory function within the controller or a separate recording device through a computer uplink connection. The analysis unit may also be coupled to a general purpose notebook or desktop computer 68 to store the data or, in addition, perform some of the signal processing functions done by the micro-controller. In this case, the data base carrying the reference values for the soil attributes may be stored in a computer memory module and the computer may be configured to carry out the comparison of the test digital value for the soil test with the reference values in the database. In this case, the computer may provide the functionality for an automatic soil clinic system where the computer is configured to generate a report with suggests on improving soil quality.
In addition, the analysis unit may simply be a transfer link between the electrodes and the computer, leaving the signal processing and display functions entirely with the computer.
If desired, in this case, the carrying case may be arranged to carry the computer as well as the other components of the kit as described.
In this case, the computer may be networked with other computers in order to share data from the soil analysis testing. The system, in this case, may thus involve the use several general purpose computers, for example those sold under the trade names APPLE
or IBM, or clones thereof, which are programmed with operating systems known by the trade names WINDOWS, LINUX or other well known or lesser known equivalents of these. The system may involve pre-programmed software using a number of possible languages or a custom designed version of a programming software sold under the trade name ACCESS or similar programming software. The computer network may be a wired local area network, or a wide area network such as the Internet, or a combination of the two, without or without added I S security, authentication protocols, or under "peer-to-peer" or "client-server" or other networking architectures. The network may also be a wireless network or a combination of wired and wireless networks. The wireless network may operate under frequencies such as those dubbed 'radio frequency' or "RF" using protocols such as the 802.11, TCP/IP, BLUE
TOOTH and the like, or other well known Internet, wireless, satellite or cell packet protocols.
The system may, alternatively, be executed on a single general purpose computer or on a single custom built computer which is dedicated to the function of the system alone.
The device may be used as follows. First, the kit is assembled to include the components as mentioned hereinabove. The user may then carry the kit to a remote field test site. Once there, the user selects an appropriate location in which to penetrate the ground to obtain the soil sample.
Referring to step a) of figure 6, the user grasps the soil collection unit and positions it above the ground surface. The user then inserts it into the ground at the remote field test site by depressing the wings either with his hands, his feet, the rubber mallet or another suitable tool. 'The cylindrical portion is then pressed into the ground up to a depth where the wings are sitting on the ground surface (as is shown in step c)). Conveniently, this means that the volume of soil actually present in the cylindrical portion will be approximately the same from one sample to the next, given of course the variations in soil density and the like.
The user them removes the soil collection from the ground using cord 28 and then orients the mouth of the soil collection portion over the mixing container 40a, whose lid has been removed. The user them grasps the handle of the plunger and transfers the material from the soil collection unit into the mixing container 40a.
The user them grasps the mixing container and delivers the liquid to the test chamber and under conditions sufficient to form a test mixture. This is done by grasping the syringe 44, opening the mixing container 40a carrying the liquid, drawing a predetermined volume of liquid into the syringe 44 and then delivering that predetermined volume of liquid into the mixing container 40a.
The user then grasps the stir rod and agitates or otherwise mixes the soil same and the liquid for a sufficient time and under the appropriate conditions to form a test mixture. For example, the soil may need to be in a location with an ambient temperature of above, say, 10 degrees Celsius.
The user then grasps the analysis unit and connects it with the two electrodes. With the analysis unit in its normal operating condition, the user then deposits one electrode in the test mixture, under conditions allowing the electrode to generate an electrical signal representative of the soil attribute being tested. This normally means waiting for the analysis unit to reach an equilibrium sensing condition, typically after a few minutes.
The analysis unit then displays a resultant value for the soil attribute being measured by that particular electrode. The user may, at this stage, record the value in a record log or alternatively enter a GPS signal using the manual data input portion 62 or the GPS input data portion 64, if provided. The user then selects the next electrode and inserts it into the test mixture and, as before, awaits the new soil attribute measurement.
The user may then prepare the kit for another soil analysis test and then repeat the procedure for another soil at that location or at another remote field test site.
The mixing solution is preferably distilled water which has a pH of about 7.0, but may include normal tap water. Even though a neutral distilled water is desirable, preliminary testing has shown that the results do not vary considerably by the use of other water such as potable tap water. This will, of course, increase the flexibility of the kit still further since neutral distilled water may not be available at all times when a measurement is necessary at a particular remote field test site. Other reagents may be also be used to draw nutrients from the soil into the liquid.
The electrodes may be protected by the use of protective covers, such as those provided by SENTEK, UK. The electrodes may also, if desired, be inserted into the test mixture at the same, it being understood that the analysis unit in the case would need the functionality to measure the two soil attributes successively. Because the electrodes are preferably protected by a covers, the electrodes may be cleaned by simply rinsing the electrode. As is known to those of skill in the art. the electrode may require calibrating unit before use and this involves the use of another container such as one of containers 40b to 40d, with a calibration liquid.
The electrodes may be inserted directly into the test mixture, or into a separate chamber containing the liquid portion of the test mixture which has isolated therefrom.
While the kit has been discussed in the context of soil, the kit could also be used to measure the water or soil over time, by way of a data logger that could be used, for example, to measure spring runoff in a wetland to measure the quantity of nutrient added over time. It is also contemplated that the device can be used to monitor the safety of drinking water, provided that the electrodes be selected which are suitable for water testing.
While the present invention has been described for what are presently considered the preferred embodiments, the invention is not so limited. To the contrary, the invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions
Claims (31)
1. A portable device for use at a remote field test site for measuring at least one soil attribute in a soil sample, comprising:
- a test sample chamber;
- a manually operable soil collection unit having a hand-graspable portion, a soil receiving portion and a transfer portion for transferring a soil sample from the soil receiving portion to the test sample chamber;
- a liquid delivery unit for delivering a liquid to the test sample chamber to form, with the soil sample, a test mixture; and - an analysis unit for probing the liquid test mixture in the test sample chamber for generating a signal representative of the soil attribute, the analysis unit including a plurality of probes for sensing one or more soil attributes and for generating a signal corresponding to the one or more soil attributes, a signal processing portion for processing the signals generated by the electrodes, and a display portion for displaying a resultant value of the one or more soil attribute.
- a test sample chamber;
- a manually operable soil collection unit having a hand-graspable portion, a soil receiving portion and a transfer portion for transferring a soil sample from the soil receiving portion to the test sample chamber;
- a liquid delivery unit for delivering a liquid to the test sample chamber to form, with the soil sample, a test mixture; and - an analysis unit for probing the liquid test mixture in the test sample chamber for generating a signal representative of the soil attribute, the analysis unit including a plurality of probes for sensing one or more soil attributes and for generating a signal corresponding to the one or more soil attributes, a signal processing portion for processing the signals generated by the electrodes, and a display portion for displaying a resultant value of the one or more soil attribute.
2. A device as defined in claim 1, wherein the soil collection unit is operable to penetrate the ground at the remote field test site.
3. A device as defined in claim 2 wherein the soil collection unit has a hollow blade portion, the blade portion being located near the an entry point of the soil receiving portion.
4. A device as defined in claim 3, wherein the soil receiving portion is formed from a cylindrical member having a lower end region bearing the blade portion.
5. A device as in claim 4, wherein the soil receiving portion is arranged to receive a fixed volume of soil.
6. A device as defined in claim 5, further comprising at least one soil volume setting member projecting outwardly from the cylindrical member, wherein the soil volume setting member is positioned along the cylindrical member to engage the ground surface when the cylindrical member is at a predetermined depth, thereby to control the volume of soil being passed into the soil receiving portion.
7. A device as defined in claim 6, further comprising a pair of opposed soil value setting members extending outwardly from the cylindrical member.
8. A device as defined in claim 7, wherein the soil collection unit further comprises a plunger for ejecting the soil sample from the soil receiving portion into the test sample chamber.
9. A device as defined in claim 8 wherein the plunger has a cross member extending through its upper end region.
10. A device as defined in claim 1, further comprising a delivery device for delivering a preparation liquid into the test sample chamber with the soil sample to form a test mixture.
11. A device as defined in claim 10, wherein the delivery device is a syringe.
12. A device as defined in claim 1, wherein the analysis unit includes one or more electrodes to measure one or more soil attributes.
13. A device as defined in claim 12, wherein the analysis unit includes a controller and a wire lead joining the controller to the one or more electrodes.
14. A device as defined in claim 13 wherein the analysis unit includes two output junctions, each for joining to a corresponding lead of two electrodes.
15. A device as defined in claim 14, wherein each electrode has a marking indicative of the soil attribute being tested.
16. A device as defined in claim 1, wherein the display unit in includes a liquid crystal display, a light emitting diode display, or a plasma display.
17. A method of analyzing the attributes of soil one or more samples on location comprising the steps of:
- collecting a soil sample from a test site;
- transferring the soil sample to a chamber;
- mixing the soil sample with a liquid and under conditions sufficient to form a test mixture; and - depositing, in succession, a plurality of electrodes into the test mixture to measure at least one soil attribute of the test mixture.
- collecting a soil sample from a test site;
- transferring the soil sample to a chamber;
- mixing the soil sample with a liquid and under conditions sufficient to form a test mixture; and - depositing, in succession, a plurality of electrodes into the test mixture to measure at least one soil attribute of the test mixture.
18. A method as defined in claim 17, wherein the test mixture liquid includes water with a pH
of about 7Ø
of about 7Ø
19. A portable kit to measure and display a plurality of soil, comprising:
a hand-held collection unit to collect a volume of soil;
- a mixing container for receiving the volume of soil together with a test mixture liquid to form a test mixture;
a plurality of probes for probing the test mixture for generating different signals, each representative of a different soil attribute; and 18~
- an analysis unit which is operative with the electrodes to measure the different soil attributes and to provide an output signal representative of the different soil attribute measurements.
a hand-held collection unit to collect a volume of soil;
- a mixing container for receiving the volume of soil together with a test mixture liquid to form a test mixture;
a plurality of probes for probing the test mixture for generating different signals, each representative of a different soil attribute; and 18~
- an analysis unit which is operative with the electrodes to measure the different soil attributes and to provide an output signal representative of the different soil attribute measurements.
20. A kit as defined in claim 19, further comprising a protective case to carry the hand-held collection unit, the mixing container, the plurality of probes and the analysis unit.
21. A kit as defined in claim 20, further comprising a mixing solution container to contain a mixing solution.
22. A kit as defined in 21, further comprising a plurality of protective electrode cover elements and a receptacle for storing the cover elements.
23. A method of conducting soil analysis tests on location at a remote field test site, comprising the steps of:
a) providing a kit which includes a soil collection unit for collecting a soil sample, at least one test chamber for containing a collected soil sample for analysis, at least one receptacle carrying a liquid for forming a test mixture with the soil sample in the test chamber, the liquid being selected according to the soil attribute being tested, at least one electrode for immersion into the test mixture for measuring a soil attribute and an electronic signal processing unit for processing a signal from the electrode representative of the soil attribute;
b) proceeding to a remote field test site;
c) grasping the soil collection unit and inserting the soil collection unit into the ground at the remote field test site to retrieve a soil sample;
d) transferring the soil sample from the soil collecting unit to the test chamber;
e) grasping the receptacle and delivering the liquid to the test chamber and under conditions sufficient to form a test mixture;
f) grasping the electrode and depositing it in the test mixture, under conditions allowing the electrode to generate an electrical signal representative of the soil attribute being tested;
g) recording an output from the electronic signal processing unit and correlating the output with one or more selected coordinates of the remote field test site;
h) preparing the kit for another soil analysis test; and then carrying out one of the following steps:
i) repeating steps b) to h) for another soil sample at the remote outside field test site; or j) proceeding to another remote outside field test site to repeat steps b) to h).
a) providing a kit which includes a soil collection unit for collecting a soil sample, at least one test chamber for containing a collected soil sample for analysis, at least one receptacle carrying a liquid for forming a test mixture with the soil sample in the test chamber, the liquid being selected according to the soil attribute being tested, at least one electrode for immersion into the test mixture for measuring a soil attribute and an electronic signal processing unit for processing a signal from the electrode representative of the soil attribute;
b) proceeding to a remote field test site;
c) grasping the soil collection unit and inserting the soil collection unit into the ground at the remote field test site to retrieve a soil sample;
d) transferring the soil sample from the soil collecting unit to the test chamber;
e) grasping the receptacle and delivering the liquid to the test chamber and under conditions sufficient to form a test mixture;
f) grasping the electrode and depositing it in the test mixture, under conditions allowing the electrode to generate an electrical signal representative of the soil attribute being tested;
g) recording an output from the electronic signal processing unit and correlating the output with one or more selected coordinates of the remote field test site;
h) preparing the kit for another soil analysis test; and then carrying out one of the following steps:
i) repeating steps b) to h) for another soil sample at the remote outside field test site; or j) proceeding to another remote outside field test site to repeat steps b) to h).
24. A method as defined in claim 23 wherein step f) includes the steps of grasping a first electrode to measure pH, and then grasping a second electrode to measure Nitrate concentrations in the soil sample.
25. A method as defined in claim 24 wherein step g) further includes the steps of separately grasping, in step by step fashion, a plurality of electrodes to measure one or more of potassium, phosphorous, copper, iron, zinc, sodium, calcium.
26. A method as defined in claim 23 wherein step g) includes the step of recording the specific location of the remote field test site.
27. A method as defined in claim 26 wherein step g) includes recording the location by a GPS
reading.
reading.
28. A method as defined in claim 27, further comprising the step of establishing a communication link between the analysis unit and a general purpose computer for transferring a recorded output thereto.
29. A computer implemented method for recording soil analysis tests, comprising the steps of comprising the steps of:
a) storing a data base of soil attribute values and a reference value for each soil attribute value;
b) receiving soil test data originating from an electrode for a given soil sample;
c) generating a test value corresponding to the soil test data;
d) comparing the test value with reference values in tile data base to find a match;
and e) reporting the soil attribute value corresponding to the matched reference value.
a) storing a data base of soil attribute values and a reference value for each soil attribute value;
b) receiving soil test data originating from an electrode for a given soil sample;
c) generating a test value corresponding to the soil test data;
d) comparing the test value with reference values in tile data base to find a match;
and e) reporting the soil attribute value corresponding to the matched reference value.
30. A computer program product recorded on a computer readable medium, comprising the computer executable steps of:
a) storing a data base of soil attribute values and a reference value for each soil attribute value;
b) receiving soil test data originating from an electrode for a given soil sample;
c) generating a test value corresponding to the soil test data;
d) comparing the test value with reference values in the data base to find a match;
and e) reporting the soil attribute value corresponding to the matched reference value.
a) storing a data base of soil attribute values and a reference value for each soil attribute value;
b) receiving soil test data originating from an electrode for a given soil sample;
c) generating a test value corresponding to the soil test data;
d) comparing the test value with reference values in the data base to find a match;
and e) reporting the soil attribute value corresponding to the matched reference value.
31. A computer program product recorded on a computer readable medium, comprising the computer executable steps of:
a) enabling the computer to receive location data relating to the location where a soil sample was colleted, for a given soil sample;
b) enabling an input port of a computer to receive soil test data originating from an electrode for a given soil sample;
c) storing the soil test data in a designated computer memory region;
d) repeating steps a to c) for each of a plurality of soil samples; and e) tabulating the results in a useful format.
a) enabling the computer to receive location data relating to the location where a soil sample was colleted, for a given soil sample;
b) enabling an input port of a computer to receive soil test data originating from an electrode for a given soil sample;
c) storing the soil test data in a designated computer memory region;
d) repeating steps a to c) for each of a plurality of soil samples; and e) tabulating the results in a useful format.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2375891 CA2375891A1 (en) | 2002-03-11 | 2002-03-11 | Portable soil nutrient analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2375891 CA2375891A1 (en) | 2002-03-11 | 2002-03-11 | Portable soil nutrient analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2375891A1 true CA2375891A1 (en) | 2003-09-11 |
Family
ID=27810552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2375891 Abandoned CA2375891A1 (en) | 2002-03-11 | 2002-03-11 | Portable soil nutrient analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2375891A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9146223B1 (en) * | 2012-08-03 | 2015-09-29 | Monsanto Technology Llc | Automated soil measurement device |
| WO2017034493A1 (en) * | 2015-08-24 | 2017-03-02 | Orhan Umut | Soil texture analyzer |
| CN107121537A (en) * | 2017-05-19 | 2017-09-01 | 成都蒲江珂贤科技有限公司 | A kind of portable soil detection means |
| US10488331B2 (en) | 2009-05-07 | 2019-11-26 | Winfield Solutions, Llc | Measurement of nitrate-nitrogen concentration in soil based on absorption spectroscopy |
| CN112326324A (en) * | 2020-12-01 | 2021-02-05 | 顾晓东 | Soil moisture content real-time monitoring platform based on Internet of things |
| CN113441192A (en) * | 2021-08-12 | 2021-09-28 | 河南省儿童医院郑州儿童医院 | Test tube censorship fixing device that endocrine metabolism branch of academic or vocational study was used |
-
2002
- 2002-03-11 CA CA 2375891 patent/CA2375891A1/en not_active Abandoned
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10488331B2 (en) | 2009-05-07 | 2019-11-26 | Winfield Solutions, Llc | Measurement of nitrate-nitrogen concentration in soil based on absorption spectroscopy |
| US9146223B1 (en) * | 2012-08-03 | 2015-09-29 | Monsanto Technology Llc | Automated soil measurement device |
| US10641756B2 (en) | 2012-08-03 | 2020-05-05 | Winfield Solutions, Llc | Automated soil measurement |
| WO2017034493A1 (en) * | 2015-08-24 | 2017-03-02 | Orhan Umut | Soil texture analyzer |
| CN107121537A (en) * | 2017-05-19 | 2017-09-01 | 成都蒲江珂贤科技有限公司 | A kind of portable soil detection means |
| CN112326324A (en) * | 2020-12-01 | 2021-02-05 | 顾晓东 | Soil moisture content real-time monitoring platform based on Internet of things |
| CN112326324B (en) * | 2020-12-01 | 2022-08-26 | 湖南品健安环科技有限公司 | Soil moisture content real-time monitoring platform based on Internet of things |
| CN113441192A (en) * | 2021-08-12 | 2021-09-28 | 河南省儿童医院郑州儿童医院 | Test tube censorship fixing device that endocrine metabolism branch of academic or vocational study was used |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Parkin et al. | Field and laboratory tests of soil respiration | |
| Haney et al. | Soil CO2 respiration: Comparison of chemical titration, CO2 IRGA analysis and the Solvita gel system | |
| Gavlak et al. | Soil, plant and water reference methods for the western region | |
| Haney et al. | Estimating soil carbon, nitrogen, and phosphorus mineralization from short‐term carbon dioxide respiration | |
| CN107318335A (en) | Fertilizing tank car | |
| Griffin et al. | Recommended soil nitrate-N tests | |
| Adamchuk et al. | Proximal soil and plant sensing | |
| Schmidhalter | Development of a quick on‐farm test to determine nitrate levels in soil | |
| US20100332039A1 (en) | Water and fertilizer management system | |
| JP2013542442A5 (en) | ||
| CN110514618A (en) | Under the conditions of global total factor on multiple and different large-scale milch cow farms liquid dung migration paths nitrogen and phosphorus content method for quick predicting | |
| GB2457053A (en) | Compost Monitoring Apparatus | |
| Pacholski | Calibrated passive sampling-Multi-plot field measurements of NH3 emissions with a combination of dynamic tube method and passive samplers | |
| CA2375891A1 (en) | Portable soil nutrient analyzer | |
| Bramley et al. | Precision agriculture demands a new approach to soil and plant sampling and analysis—examples from Australia | |
| US20240003863A1 (en) | Methods for measuring organic carbon content or agricultural soils | |
| KR20020079113A (en) | Portable apparatus for rapidly analyzing residue pesticide in agricultural products | |
| Wilson et al. | Recommended methods of manure analysis | |
| WO2017029592A1 (en) | Device and method for measurement of soil health parameters and fertilizer recommendation | |
| Jensen et al. | Fast and accurate quantification of nitrogen and phosphorus constituents in animal slurries using NMR sensor technology | |
| JP2979478B2 (en) | Real-time diagnostic method of plant nutrition during growth and its measuring device | |
| Larbi | Configuration and Assessment of a Submersible Fluorometer for Evaluating Fluorescent Dye Deposition | |
| EP1455177A3 (en) | A sample testing device and method | |
| Yee et al. | Prediction of ammonia concentration in water based on microwave spectroscopy | |
| Marchandise | Quality and accuracy in analytical chemistry |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |