公开(公告)号：CA2250889A1

公开(公告)日：1997-10-09

申请号：CA2250889

申请日：1997-04-01

Applicant: PATCHEN INC

Inventor： BECK JAMES L ,  KINTER MALCOLM L

IPC: A01M7/00 ,  A01M21/00 ,  G01C3/08 ,  G01J1/04 ,  G01J1/42 ,  G01J1/44 ,  G01J3/42 ,  G01J3/50 ,  G01N21/25 ,  A01C23/00

Abstract: Weeds (100) growing around the bases of the stalks of cotton plant (101) growing in a row (105 and 105A) in a cotton field are sprayed with herbicide without spraying the cotton stalks (101) or wasting herbicide on bare ground (107). The cotton plants are adequately mature that their stalks exhibit a significantly different spectral reflectance characteristic than the weeds typically growing amid the cotton. The cotton plants are adequately tall that the majority of the leaves of the cotton plants are disposed outside the area which can be sprayed using an electronically-controlled valve and nozzle (103). Light is transmitted toward an object (a cotton stalk, a weed, or soil) in the row and the reflected light is analyzed. If the object has a spectral characteristic of a growing weed, then the valve is activated and the object is sprayed with herbicide. If the object does not have the spectral characteristic of a growing weed, then the valve is not activated and the object is not sprayed with herbicide.

公开(公告)号：EP0900451A4

公开(公告)日：1999-11-24

申请号：EP97920078

申请日：1997-04-01

Applicant: PATCHEN INC

Inventor： BECK JAMES L ,  KINTER MALCOLM L

IPC: A01M7/00 ,  A01M21/00 ,  G01C3/08 ,  G01J1/04 ,  G01J1/42 ,  G01J1/44 ,  G01J3/42 ,  G01J3/50 ,  G01N21/25 ,  H01J40/14

CPC classification number: A01M21/00 ,  A01M7/0089 ,  G01C3/085 ,  G01J1/04 ,  G01J1/0407 ,  G01J1/0422 ,  G01J1/0437 ,  G01J1/44 ,  G01J3/42 ,  G01J3/50 ,  G01J3/501 ,  G01J2001/4242 ,  G01N21/255 ,  G01N2021/8466

Abstract: Weeds (100) growing around the bases of the stalks of cotton plant (101) growing in a row (105 and 105A) in a cotton field are sprayed with herbicide without spraying the cotton stalks (101) or wasting herbicide on bare ground (107). The cotton plants are adequately mature that their stalks exhibit a significantly different spectral reflectance characteristic than the weeds typically growing amid the cotton. The cotton plants are adequately tall that the majority of the leaves of the cotton plants are disposed outside the area which can be sprayed using an electronically-controlled valve and nozzle (103). Light is transmitted toward an object (a cotton stalk, a weed, or soil) in the row and the reflected light is analyzed. If the object has a spectral characteristic of a growing weed, then the valve is activated and the object is sprayed with herbicide. If the object does not have the spectral characteristic of a growing weed, then the valve is not activated and the object is not sprayed with herbicide.

Abstract translation: 杂草（100）的棉花植物（101）的茎的一排（105和105A）在棉田生长碱基周围生长喷洒除草剂不喷射棉杆（101）或浪费除草剂在裸露地面（107 ）。 棉花植物已经足够成熟，它们的茎具有明显不同于通常在棉花中生长的杂草的光谱反射特征。 棉花植物足够高，使得棉花植物的大部分叶子布置在可以使用电子控制阀和喷嘴（103）喷洒的区域之外。 光被传输到一行中的物体（棉花秆，杂草或土壤），并分析反射光。 如果物体具有杂草生长的光谱特征，则启动阀门，并用除草剂喷洒物体。 如果物体不具有生长杂草的光谱特性，则阀门不启动，物体不喷洒除草剂。

公开(公告)号：EP0771416A1

公开(公告)日：1997-05-07

申请号：EP95927122.0

申请日：1995-07-14

Applicant: PATCHEN INC.

Inventor： BECK, James, L. ,  KINTER, Malcolm, L.

IPC: A01M7 ,  A01M21 ,  G01C3 ,  G01J1 ,  G01J3 ,  G01N21

CPC classification number: G01J3/42 ,  A01M7/0089 ,  A01M21/00 ,  G01C3/085 ,  G01J1/04 ,  G01J1/0407 ,  G01J1/0422 ,  G01J1/0437 ,  G01J1/4228 ,  G01J1/44 ,  G01J3/0205 ,  G01J3/0216 ,  G01J3/0229 ,  G01J3/50 ,  G01J3/501 ,  G01J2001/4242 ,  G01N21/255 ,  G01N2021/8466

Abstract: An optical proximity sensor (1) generates information indicative of a distance (D1) to an object (14A) in a field and in some embodiments also generates information indicative of a spectral reflectance characteristics of the object (14A). The information indicative of the spectral reflectance characteristic can be used to determine whether the object (14A) in the field is a living plant (14A) or another object such as soil (10). Light emitted from the optical sensor (1) for reflection off the object (14A) is modulated so that reflected light from the optical sensor can be discriminated from reflected ambient sunlight. The optical sensor (1) is scanned over the field to map objects in the field and/or to determine the location of rows of crop plants. A sensor in accordance with the present invention has many uses in agriculture including spraying, cultivation and vehicle guidance.

公开(公告)号：EP0653051B2

公开(公告)日：2001-11-28

申请号：EP93917331.6

申请日：1993-07-27

Applicant: PATCHEN, INC.

Inventor： BECK, Jim ,  VYSE, Tom

IPC: G01J3/50 ,  A01M21/00

CPC classification number: G01J3/50 ,  A01M7/0089 ,  A01M21/00 ,  G01J1/44 ,  G01J3/0229 ,  G01J3/42 ,  G01J3/501 ,  G01J2001/4242

Abstract: An apparatus and a method are provided for selectively eliminating weeds in agriculture operations. To provide selective elimination, at least two light (radiation) emitters (201, 202), powered by an internal power source, are modulated to switch on and off at very high speeds. Each emitter emits radiation of a different emitter wavelength. The on/off modulation of one emitter is phase shifted by approximately 90 degrees with respect to the modulation of the particular spot on the ground. The light beams (203, 204), provided by the emitters, are reflected off a plant (206) or the soil and are intercepted by a photodetector. Because plants have a characteristic spectral reflectance in regions of the electromagnetic spectrum which can be discriminated from the spectral reflectance of the background earth, the relative amplitudes of the reflected radiation at the two emitter wavelengths varies depending on whether the radiation is reflected off a plant or the soil. A ratio of the radiation at the two emitter wavelengths received by the photodetector is converted to phase. This phase is compared to an initial reference phase of the modulation of one of the emitters. A controller (221) uses this phase information to determine the presence or absence of a plant and then eliminates the weed.

公开(公告)号：EP0653051B1

公开(公告)日：1998-11-25

申请号：EP93917331.6

申请日：1993-07-27

Applicant: PATCHEN, INC.

Inventor： BECK, Jim ,  VYSE, Tom

IPC: G01J3/50 ,  A01M21/00

CPC classification number: G01J3/50 ,  A01M7/0089 ,  A01M21/00 ,  G01J1/44 ,  G01J3/0229 ,  G01J3/42 ,  G01J3/501 ,  G01J2001/4242

Abstract: An apparatus and a method are provided for selectively eliminating weeds in agriculture operations. To provide selective elimination, at least two light (radiation) emitters (201, 202), powered by an internal power source, are modulated to switch on and off at very high speeds. Each emitter emits radiation of a different emitter wavelength. The on/off modulation of one emitter is phase shifted by approximately 90 degrees with respect to the modulation of the particular spot on the ground. The light beams (203, 204), provided by the emitters, are reflected off a plant (206) or the soil and are intercepted by a photodetector. Because plants have a characteristic spectral reflectance in regions of the electromagnetic spectrum which can be discriminated from the spectral reflectance of the background earth, the relative amplitudes of the reflected radiation at the two emitter wavelengths varies depending on whether the radiation is reflected off a plant or the soil. A ratio of the radiation at the two emitter wavelengths received by the photodetector is converted to phase. This phase is compared to an initial reference phase of the modulation of one of the emitters. A controller (221) uses this phase information to determine the presence or absence of a plant and then eliminates the weed.

公开(公告)号：EP0771416A4

公开(公告)日：1999-11-17

申请号：EP95927122

申请日：1995-07-14

Applicant: PATCHEN INC

Inventor： BECK JAMES L ,  KINTER MALCOLM L

IPC: A01M7/00 ,  A01M21/00 ,  G01C3/08 ,  G01J1/04 ,  G01J1/42 ,  G01J1/44 ,  G01J3/42 ,  G01J3/50 ,  G01N21/25 ,  G01M9/04 ,  A01C23/00 ,  A01G25/00 ,  G06M7/00 ,  H01J40/14

CPC classification number: G01J3/42 ,  A01M7/0089 ,  A01M21/00 ,  G01C3/085 ,  G01J1/04 ,  G01J1/0407 ,  G01J1/0422 ,  G01J1/0437 ,  G01J1/4228 ,  G01J1/44 ,  G01J3/0205 ,  G01J3/0216 ,  G01J3/0229 ,  G01J3/50 ,  G01J3/501 ,  G01J2001/4242 ,  G01N21/255 ,  G01N2021/8466

Abstract: An optical proximity sensor (1) generates information indicative of a distance (D1) to an object (14A) in a field and in some embodiments also generates information indicative of a spectral reflectance characteristics of the object (14A). The information indicative of the spectral reflectance characteristic can be used to determine whether the object (14A) in the field is a living plant (14A) or another object such as soil (10). Light emitted from the optical sensor (1) for reflection off the object (14A) is modulated so that reflected light from the optical sensor can be discriminated from reflected ambient sunlight. The optical sensor (1) is scanned over the field to map objects in the field and/or to determine the location of rows of crop plants. A sensor in accordance with the present invention has many uses in agriculture including spraying, cultivation and vehicle guidance.

公开(公告)号：EP0900451A1

公开(公告)日：1999-03-10

申请号：EP97920078.0

申请日：1997-04-01

Applicant: Patchen, Inc.

Inventor： BECK, James, L. ,  KINTER, Malcolm, L.

IPC: A01M7 ,  A01M21 ,  G01C3 ,  G01J1 ,  G01J3 ,  G01N21

CPC classification number: A01M21/00 ,  A01M7/0089 ,  G01C3/085 ,  G01J1/04 ,  G01J1/0407 ,  G01J1/0422 ,  G01J1/0437 ,  G01J1/44 ,  G01J3/42 ,  G01J3/50 ,  G01J3/501 ,  G01J2001/4242 ,  G01N21/255 ,  G01N2021/8466

Abstract: Weeds (100) growing around the bases of the stalks of cotton plant (101) growing in a row (105 and 105A) in a cotton field are sprayed with herbicide without spraying the cotton stalks (101) or wasting herbicide on bare ground (107). The cotton plants are adequately mature that their stalks exhibit a significantly different spectral reflectance characteristic than the weeds typically growing amid the cotton. The cotton plants are adequately tall that the majority of the leaves of the cotton plants are disposed outside the area which can be sprayed using an electronically-controlled valve and nozzle (103). Light is transmitted toward an object (a cotton stalk, a weed, or soil) in the row and the reflected light is analyzed. If the object has a spectral characteristic of a growing weed, then the valve is activated and the object is sprayed with herbicide. If the object does not have the spectral characteristic of a growing weed, then the valve is not activated and the object is not sprayed with herbicide.

Abstract translation: 在棉花田中连续生长（105和105A）的棉花植株（101）的茎杆周围生长的杂草（100）喷洒除草剂而不喷洒棉花茎（101）或将除草剂浪费在裸地上（107 ）。 棉花植物已经足够成熟，它们的茎具有明显不同于通常在棉花中生长的杂草的光谱反射特征。 棉花植物足够高，使得棉花植物的大部分叶子布置在可以使用电子控制阀和喷嘴（103）喷洒的区域之外。 光被传输到一行中的物体（棉花秆，杂草或土壤），并分析反射光。 如果物体具有杂草生长的光谱特征，则启动阀门，并用除草剂喷洒物体。 如果物体不具有生长杂草的光谱特性，则阀门不启动，物体不喷洒除草剂。