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WO2009066990A2 - Appareil d'analyse des nutriments d'un sol - Google Patents

Appareil d'analyse des nutriments d'un sol Download PDF

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Publication number
WO2009066990A2
WO2009066990A2 PCT/MY2008/000156 MY2008000156W WO2009066990A2 WO 2009066990 A2 WO2009066990 A2 WO 2009066990A2 MY 2008000156 W MY2008000156 W MY 2008000156W WO 2009066990 A2 WO2009066990 A2 WO 2009066990A2
Authority
WO
WIPO (PCT)
Prior art keywords
soil nutrient
sensor cell
spray nozzle
analyzing
designed
Prior art date
Application number
PCT/MY2008/000156
Other languages
English (en)
Other versions
WO2009066990A3 (fr
Inventor
Mohd Rais Ahmad
Rahimah Mohod Saman
Khairil Mazwan Mohd Zaini
Original Assignee
Mimos Berhad
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mimos Berhad filed Critical Mimos Berhad
Publication of WO2009066990A2 publication Critical patent/WO2009066990A2/fr
Publication of WO2009066990A3 publication Critical patent/WO2009066990A3/fr

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Classifications

    • 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
    • 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
    • G01N33/245—Earth materials for agricultural purposes

Definitions

  • the present invention relates to the use of an apparatus for soil nutrient analysis.
  • soil samples taken from the field are tested in a laboratory to determine levels of nutrient in the soil.
  • Ionic nutrient of interest includes nitrate, nitrite, phosphate, phosphite, and potassium.
  • the laboratory tests require multi-step analytical procedures for determining nutrient levels. Based on the results, fertilizers are applied uniformly across the field without considering local variations in soil nutrient composition.
  • Conventional agricultural equipment is designed to apply chemicals, fertilizers and plant crops at uniform rates within a field, regardless of changes in soil type, soil nutrient and organic matter content. This can result in an over application of chemicals and fertilizers in some areas of the field, an under application in other areas, over planting in some areas and under planting in others. It would therefore be desirable to provide a prescription application system which would rapidly and accurately adjust chemical, fertilizer and seedling rates by sensing variations in soil type, soil nutrient and organic matter as equipment traverses a field.
  • Standard methods of soil analysis include the use of a system for analyzing soil nutrient using ion-sensitive field effect transistor (ISFET) sensors where the sensing cell is bored underground, hi this configuration the soil is moisturized followed by in-situ detection of ionic species via ion-selective membranes.
  • the bored cell may have a disadvantage in terms of reliability due to direct contact of the ion-selective membrane with soil. The problem is even more serious in clay or hard and dense soil where the tendency for soil to get stuck to the membrane is higher, hi the present invention, a rod shape apparatus which function as a plunger body is designed to bore into the soil.
  • the present apparatus comprises a moveable gate (3) which control the entry of soil to be in contact with the sensor cell (4).
  • This invention may reduce the duration of soil in continuous direct contact to the sensor cell (4) which subsequently reduce the tendency of soil to get stuck and attached to the sensor cell (4).
  • the present apparatus further comprises a spray nozzle (1) which is designed for spraying of extractant liquid to the soil. Hence, the moisture of soil can be monitored.
  • This invention may reduce the duration of soil hi continuous direct contact to the sensor cell (4) and also reduce the tendency of dense soil to get stuck and attached to the sensor cell (4).
  • United States granted patent No. 5,010,776 discloses a method and system for detecting environmental contamination, such as subsurface contamination, with a test probe located in a medium.
  • the probe is adapted to collect a fluid sample from the medium for deterrnining the presence of contaminants having a vapor pressure.
  • Pneumatic communication lines extend from a test point and connect to the probe.
  • a detector/analyzer is connected to the distal end of the communication lines of the probe. While connected, a fluid sample is taken into the probe and transported hi the pneumatic communication lines by a carrier gas to the detector/analyzer for analysis of the contaminants.
  • the general principle is applicable for contaminant detection and/or analysis in soil masses, liquid masses and gases.
  • US 6,353,323 Bl discloses an apparatus for, and a method of, simultaneously measuring the concentration of a selected ion species in a solution and the pH of the solution, uses an ion selective electrode, a reference electrode and an ISFET immersed in the solution.
  • the ion concentration is determined in a first circuit from the potential difference between the ion selective electrode and the reference electrode
  • the pH is determined in a second circuit from the current flowing between the ISFET and the reference electrode.
  • the reference electrode is connected into the second circuit so as to isolate the two circuits from each other.
  • the earth potential of the solution is connected to provide the earth potential of the first circuit, and is connected to the second circuit via a high capacitance so as to provide a virtual earth therefore.
  • Each circuit is supplied with a separate power source, and the circuit outputs are supplied via respective isolation amplifiers to a multi-channel meter.
  • United States granted patent No. US 6,487,920 Bl discloses an improved in situ penetrometer probe and to a heated, flexible transfer line.
  • the line and probe may be implemented together in a penetrometer system in which the transfer line is used to connect the probe to a collector/analyzer at the surface.
  • the probe comprises a heater that controls the temperature of a geologic medium surrounding the probe.
  • At least one carrier gas port and vapor collection port are located on an external side wall of the probe.
  • the carrier gas port provides a carrier gas into the geologic medium, and the collection port captures vapors from the geologic medium for analysis.
  • a flexible collection line that conveys a collected fluid, i.e., vapor, sample to a collector/analyzer.
  • a flexible carrier gas line conveys a carrier gas to facilitate the collection of the sample.
  • a system heating the collection line is also provided.
  • the collection line is electrically conductive so that an electrical power source can generate a current through it so that the internal resistance generates heat
  • United States granted patent No. US 6,624,637 Bl discloses a device for measuring the concentration of ions, notably of hydrogen ions, in a measuring liquid using at least one ion-sensitive field effect transistor which is integrated into an electric circuit within the device in such a way that said circuit emits an output signal which serves as measure of the ion concentration in the measuring liquid.
  • the invention provides for the at least one pH-ISFET to be bridge-connected with at least three resistors.
  • the present invention relates to the use of an apparatus for moisturizing soil and analyzing soil nutrient.
  • the apparatus comprising of spray nozzle (1), polymer tubing (2), moveable gate (3), sensor cell (4), preferably ion-sensitive field effect transistor (ISFET) or ion-selective electrode (ISE) sensor cell, electronics connection system (5), extractant supply (6), pressure regulator (7) and/or analyzer (8).
  • the spray nozzle (1), polymer tubing (2), moveable gate (3), sensor cell (4) and electronics connection system (5) are incorporated in a rod (9).
  • the rod (9) is designed to bore into the soil and function as a plunger body.
  • the spray nozzle (1) is positioned on top of the soil surface and the sensor cell (4) and is designed to spray out extractant liquid to moisture the soil for soil nutrient analysis.
  • the spray nozzle (1) is adjustable wherein the height of the spray nozzle (1) from the soil surface can be adjusted to accommodate different soil types.
  • the spray nozzle (1) is connected to the extractant supply (6) and pressure regulator (7) via polymer tubing (2), preferably teflon tubing.
  • the moveable gate (3) is designed to open or close manually and/or automatically which allow the entry of soil into the rod (9) and in contact with the sensor cell (4).
  • the sensor cell (4) is designed to detect and measure the soil nutrient.
  • the sensor cell (4) preferably ion-sensitive field effect transistor (ISFET) or ion-selective electrode (ISE) sensor cell is positioned at its tilt angle, at the entrance of the moveable gate (3) and under the spray nozzle (1).
  • the electronics connection system (5) is designed to connect the sensor cell (4) to the analyzer (8).
  • the extractant supply (6) is designed for supplying extractant liquid to the spray nozzle (1).
  • the pressure regulator (7) is designed for regulating the pressure of extractant liquid. Both extractant supply (6) and pressure regulator (7) are connected to the spray nozzle (1) wherein the volume, interval and/or pressure of the extractant liquid can be monitored accordingly.
  • the analyzer (8) is designed for analyzing the types, quantity and/or quality of soil nutrient.
  • Figure 1 illustrates the main components of the apparatus for analyzing soil nutrient.
  • the present invention relates to the use of an apparatus for moisturizing soil and analyzing soil nutrient.
  • An apparatus for analyzing soil nutrient comprising spray nozzle (1), polymer tubing (2), moveable gate (3), sensor cell (4), electronics connection system (5), extractant supply (6), pressure regulator (7) and/or analyzer (8).
  • the spray nozzle (1), polymer tubing (2), moveable gate (3), sensor cell (4) and electronics connection system (5) are incorporated in a rod (9).
  • the rod (9) is designed to work as a plunger body and is designed to bore into the soil for a long period of time.
  • the rod (9) consists of a moveable gate (3) which is situated at the surface of the rod (9).
  • the moveable gate (3) is designed to open or close which allow the entry of soil into the rod (9) and in contact with the sensor cell (4), preferably ion-sensitive field effect transistor (ISFET) or ion-selective electrode (ISE) sensor cell.
  • the ion-sensitive field effect transistor (ISFET) or ion-selective electrode (ISE) sensor cell (4) is located at its tilt angle and at the entrance of the moveable gate (3).
  • the spray nozzle (1) is located on top of the ion- sensitive field effect transistor (ISFET) or ion-selective electrode (ISE) sensor cell (4) wherein the spray nozzle (1) will spray out extractant liquid to moisture the soil.
  • Soil nutrient will be dissolved in the extractant liquid and the soil nutrient solution will be detected by the ion-sensitive field effect transistor (ISFET) or ion-selective electrode (ISE) sensor cell (4) which placed at the bottom. Electrical nodes will be produced and it will be processed and analyzed by receive output integranted circuit (ROIC) and analyzer (8).
  • ISFET ion-sensitive field effect transistor
  • ISE ion-selective electrode
  • the spray nozzle (1) is designed to spray out extractant liquid to moisture the soil.
  • the spray nozzle (1) is optimally positioned on top of the soil surface and the sensor cell (4), preferably ion-sensitive field effect transistor (ISFET) or ion-selective electrode (ISE) sensor cell.
  • ISFET ion-sensitive field effect transistor
  • ISE ion-selective electrode
  • the spray apparatus is permanently placed in the soil at a designated location for regular on-site analysis of soil nutrient. The height of the spray nozzle (1) from the soil surface can be adjusted to accommodate different soil types.
  • the polymer tubing (2) is designed to connect the spray nozzle (1 ) to the extractant supply (6) and pressure regulator (7).
  • the polymer tubing (2) is made of polymer, preferably teflon.
  • the moveable gate (3) is designed to open or close manually and/or automatically which allow the entry of soil into the rod (9) and in contact with the sensor cell (4), preferably ion-sensitive field effect transistor (ISFET) or ion-selective electrode (ISE) sensor cell.
  • the moveable gate (3) is situated at the surface of the rod (9).
  • the sensor cell (4) preferably ion-sensitive field effect transistor (ISFET) or ion- selective electrode (ISE) sensor cell is positioned at its tilt angle, at the entrance of the moveable gate (3) and under the spray nozzle (1).
  • the sensor cell (4) is designed to detect and measure the soil nutrient.
  • the sensor cell (4) is positioned at its tilt angle which maximizes and optimizes the contact of the soil solution with the surface of the sensor cell (4) to enable better and quality detection and measurement of soil nutrient.
  • the electronics connection system (5) is designed to connect the sensor cell (4), preferably ion-sensitive field effect transistor (ISFET) or ion-selective electrode (ISE) sensor cell to the analyzer (8) wherein the types, quantity and/or quality of the soil nutrient will be detected, measured and analyzed.
  • ISFET ion-sensitive field effect transistor
  • ISE ion-selective electrode
  • the extractant supply (6) is designed to supply the extractant liquid to the spray nozzle (1) for spraying out extractant liquid to moisture the soil.
  • the extractant supply (6) is connected to the spray nozzle (1) via the polymer tubing (2).
  • the pressure regulator (7) is designed to regulate the extractant liquid wherein the volume, interval and/or pressure of the extractant liquid can be monitor accordingly.
  • the pressure regulator (7) is connected to the spray nozzle (1) via the polymer tubing (2).
  • the analyzer (8) is designed to analyze the soil nutrient wherein the results detected and measured by the sensor cell (4), preferably ion-sensitive field effect transistor (ISFET) or ion-selective electrode (ISE) sensor cell will be analyzed.
  • ISFET ion-sensitive field effect transistor
  • ISE ion-selective electrode

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Food Science & Technology (AREA)
  • Analytical Chemistry (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

L'invention concerne l'utilisation d'un appareil d'humidification d'un sol et d'analyse des nutriments d'un sol. L'appareil comprend une buse d'aspersion (1), un tube polymère (2), un clapet mobile (3), une cellule de détection (4), de préférence une cellule de détection à transistors à effet de champ sensibles aux ions (ISFET) ou à électrodes sélectives (ISE), un système de connexion d'électronique (5), une réserve (6) d'agent d'extraction, un régulateur de pression (7) et/ou un analyseur (8).
PCT/MY2008/000156 2007-11-22 2008-11-24 Appareil d'analyse des nutriments d'un sol WO2009066990A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MYPI20072072 2007-11-22
MYPI20072072A MY144987A (en) 2007-11-22 2007-11-22 Apparatus for soil nutrient analysis

Publications (2)

Publication Number Publication Date
WO2009066990A2 true WO2009066990A2 (fr) 2009-05-28
WO2009066990A3 WO2009066990A3 (fr) 2009-08-20

Family

ID=40668024

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/MY2008/000156 WO2009066990A2 (fr) 2007-11-22 2008-11-24 Appareil d'analyse des nutriments d'un sol

Country Status (2)

Country Link
MY (1) MY144987A (fr)
WO (1) WO2009066990A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103091276A (zh) * 2011-11-03 2013-05-08 中国科学院合肥物质科学研究院 土壤养分传感器
CN104215672A (zh) * 2014-08-20 2014-12-17 北京农业信息技术研究中心 一种土壤养分快速检测方法
CN109725024A (zh) * 2017-10-27 2019-05-07 拉碧斯半导体株式会社 测量装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5526705A (en) * 1994-08-05 1996-06-18 Tyler Limited Partnership Automated work station for analyzing soil samples
JPH1014402A (ja) * 1996-06-28 1998-01-20 Sanyo Electric Works Ltd 土壌養分計測器

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103091276A (zh) * 2011-11-03 2013-05-08 中国科学院合肥物质科学研究院 土壤养分传感器
CN104215672A (zh) * 2014-08-20 2014-12-17 北京农业信息技术研究中心 一种土壤养分快速检测方法
CN109725024A (zh) * 2017-10-27 2019-05-07 拉碧斯半导体株式会社 测量装置
CN109725024B (zh) * 2017-10-27 2023-04-28 拉碧斯半导体株式会社 测量装置

Also Published As

Publication number Publication date
MY144987A (en) 2011-12-15
WO2009066990A3 (fr) 2009-08-20

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