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Soil moisture sensor 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • A01G-025/16
출원번호 US-0198433 (1994-02-18)
발명자 / 주소
  • Feuer Lenny (16216 Brooks Rd. Grass Valley CA 95945-8816)
인용정보 피인용 횟수 : 55  인용 특허 : 0

초록 ▼

Moisture sensor devices, systems and methods of making and using the same employ a pair of elongated, probe-like, conductive sensor elements, coupled as part of an LC oscillator circuit. The use of an LC oscillator circuit can minimize adverse effects of conductivity variances in the medium being mo

대표청구항 ▼

A method of sensing the moisture content of a volume of a medium, the medium having a dielectric constant dependant on the medium\s moisture content, the method comprising the steps of: disposing first and second spaced apart conductive sensor elements within said volume of the medium, to provide a

이 특허를 인용한 특허 (55)

  1. Campbell, Jeffrey; Sohrabi, Kathy; Karmel, Clayton R., Antenna circuit matching the soil conditions.
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  2. Albadri, Ali; Smith, Andrew; Rogers, Paul; Male, Peter, Apparatus and method for measurement of hardenable material characteristics.
    상세보기
  3. Fontana, Jr., Anthony J.; Campbell, Gaylon S.; Campbell, Colin S.; Walden, Benjamin J.; Holmes, Derek L., Apparatus, method, and system for measuring water activity and weight.
    상세보기
  4. Hubbell,Joel M.; Sisson,James B.; Schafer,Annette L., Exfiltrometer apparatus and method for measuring unsaturated hydrologic properties in soil.
    상세보기
  5. Kaminski, Michael Anthony, Flow control center sensing pressure by barometric sensor and emit sensed pressure signal.
    상세보기
  6. Frey Werner,DEX ; Gotz German,DEX, Humidity sensor for capacitive measurement of humidity in bulk material.
    상세보기
  7. Float, Ardele Y.; Float, Kenneth W., Landscape sprinkling systems.
    상세보기
  8. Troxler, Robert Ernest, Large area position/proximity correction device with alarms using (D)GPS technology.
    상세보기
  9. Carr Raymond A. ; Lauman Brian C., Leak detection system for liquid processing device.
    상세보기
  10. Caamano,Ramon Anthony; Lee,Michael J., Low power system for wireless monitoring of an environment and irrigation control.
    상세보기
  11. Miller,Michael F.; Masters,Brett P.; Lundstrom,Mark E., Method and apparatus for detection of analyte using a flexural plate wave device and magnetic particles.
    상세보기
  12. Jennings,Thomas A., Method and apparatus for monitoring and determining the moisture content of a substance in a container.
    상세보기
  13. Wherley, Benjamin G.; Alvarado, Jorge Luis; White, Richard H.; Thomas, James C.; Men, Junfeng; Tate, Dean Evan; Jaber, Fouad H.; Reynolds, William C., Method and system for reduction of irrigation runoff.
    상세보기
  14. Troxler, Robert Ernest; Malassenet, Francois Jacques, Methods, systems, and computer program products for locating and tracking objects.
    상세보기
  15. Troxler, Robert Ernest; Malassenet, Francois Jacques, Methods, systems, and computer program products for locating and tracking objects.
    상세보기
  16. Robb, John Chamberlain; Arms, Steven W.; Townsend, Christopher P.; Churchill, David L.; Hamel, Michael J., Miniature stimulating and sensing system.
    상세보기
  17. Campbell, Gaylon S.; Greenway, Warren C., Moisture detection apparatus and method.
    상세보기
  18. Lashgari,Bijan, Moisture responsive sprinkler circuit.
    상세보기
  19. Stockton Paul, Moisture sensor having low sensitivity to conductance changes.
    상세보기
  20. Kelly John M., Moisture sensor using helical transmission line.
    상세보기
  21. Zimmerman,James, Optical moisture sensor.
    상세보기
  22. Troxler, Robert E., Paving related measuring device incorporating a computer device and communication element therebetween and associated method.
    상세보기
  23. Bienvenu,Michael E.; Pjura,John; Troxler,Robert Ernest, Paving-related measuring device incorporating a computer device and communication element therebetween and associated method.
    상세보기
  24. Troxler, Robert E., Paving-related measuring device incorporating a computer device and communication element therebetween and associated method.
    상세보기
  25. Troxler, Robert Ernest, Position and proximity detection systems and methods.
    상세보기
  26. Harrington, Jeffrey M.; Koebler, Martin; Kozar, Norbert; Caamano, Ramon A.; Lee, Michael J., Remote control for hose operation.
    상세보기
  27. Harrington, Jeffrey M; Koebler, Martin; Kozar, Norbert; Caamano, Ramon A; Lee, Michael J, Remote control for hose operation.
    상세보기
  28. Tracey, James B. A.; Burke, Jr., James E.; Prosise, Roy Paul; Okonsky, Christian, Remote control for valve and hose reel system.
    상세보기
  29. Tracey, James B. A.; Burke, Jr., James E.; Prosise, Roy Paul; Okonsky, Christian, Remote control for valve and hose reel system.
    상세보기
  30. Campbell, Jeffrey, Sensor for measuring moisture and salinity.
    상세보기
  31. Campbell, Jeffrey, Sensor for measuring moisture and salinity.
    상세보기
  32. Campbell,Jeffrey, Sensor for measuring moisture and salinity.
    상세보기
  33. Campbell,Jeffrey, Sensor for measuring moisture and salinity.
    상세보기
  34. Soto Jaime J.,CLX ; Carmona Rolando A.,CLX ; Susaeta Andres,CLX ; Herrera Leonardo C.,CLX ; Lepe Marcelo I.,CLX ; Orellana Marcelo H.,CLX, Sensor for sensing changes in the permittivity of a medium in which it is disposed.
    상세보기
  35. Izadnegahdar, Alain, Soil humidity evaluation with contact free coupling.
    상세보기
  36. Buss,Peter, Soil matric potential and salinity measurement apparatus and method of use.
    상세보기
  37. Richings, Sr., Jon; Martin, Scott, Soil moisture probe and system with temperature adjustment.
    상세보기
  38. Kumaran, Hari Hara; Tomar, Vibha, Soil moisture sensor.
    상세보기
  39. Runge, Thomas H.; Hill, Jason Lester; Zimmerman, James, Soil moisture sensor.
    상세보기
  40. Runge, Thomas H.; Hill, Jason Lester; Zimmerman, James, Soil moisture sensor.
    상세보기
  41. Dresselhaus, Daniel D.; O'Brien, Kevin G., Soil moisture sensor and controller.
    상세보기
  42. Dresselhaus, Daniel D.; O'Brien, Kevin G., Soil moisture sensor and controller.
    상세보기
  43. Hill, Jason Lester, Soil moisture sensor with improved enclosure.
    상세보기
  44. Hughes,William C., Soil probe device and method of making same.
    상세보기
  45. Graham,Glen Gary, Systems and methods for adaptation to wireless remote control of irrigation valves from existing hardwired control devices.
    상세보기
  46. Clark,James Jolly; Perkins,Michael T.; Small,David, Water irrigation system with moisture gauge and method of controlling irrigation.
    상세보기
  47. Ensworth, Mark M.; Booth, Barbara E.; Thornton, Dean C.; Fern, David G.; Hern, Randall A.; Napier, Malcolm N., Wireless extension to an irrigation control system and related methods.
    상세보기
  48. Ensworth, Mark M.; Booth, Barbara E.; Thornton, Dean C.; Fern, David G.; Hern, Randall A.; Napier, Malcolm N., Wireless extension to an irrigation control system and related methods.
    상세보기
  49. Ensworth, Mark M.; Booth, Barbara E.; Thornton, Dean C.; Hern, Randall A.; Napier, Malcolm N., Wireless extension to an irrigation control system and related methods.
    상세보기
  50. Thornton, Dean C.; Hern, Randall A.; Napier, Malcolm N., Wireless extension to an irrigation control system and related methods.
    상세보기
  51. Ensworth, Mark M.; Booth, Barbara E.; Thornton, Dean C.; Hern, Randall A.; Napier, Malcolm N., Wireless irrigation control.
    상세보기
  52. Ensworth, Mark M.; Booth, Barbara E.; Thornton, Dean C.; Hern, Randall A.; Napier, Malcolm N., Wireless irrigation control.
    상세보기
  53. Tennyson, Michael James; Reyes Archundia, Angel; Torre, Frank; Jenkins, Robert H.; Mueller, Brian Jeffrey, Wireless irrigation control.
    상세보기
  54. Tennyson, Michael James; Reyes, Angel; Torres, Frank; Jenkins, Robert H.; Mueller, Brian Jeffrey, Wireless irrigation control.
    상세보기
  55. Thornton, Dean C.; Hern, Randall A.; Napier, Malcolm N., Wireless irrigation control.
    상세보기

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