ES2137384T3 - Sistema de medir distancias. - Google Patents

Sistema de medir distancias.

Info

Publication number
ES2137384T3
ES2137384T3 ES95102041T ES95102041T ES2137384T3 ES 2137384 T3 ES2137384 T3 ES 2137384T3 ES 95102041 T ES95102041 T ES 95102041T ES 95102041 T ES95102041 T ES 95102041T ES 2137384 T3 ES2137384 T3 ES 2137384T3
Authority
ES
Spain
Prior art keywords
eco
amplitude
value
time
distance value
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.)
Expired - Lifetime
Application number
ES95102041T
Other languages
English (en)
Inventor
James J Phelan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deere and Co
Original Assignee
Deere and Co
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 Deere and Co filed Critical Deere and Co
Application granted granted Critical
Publication of ES2137384T3 publication Critical patent/ES2137384T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
    • A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
    • A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
    • A01B63/111—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
    • A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
    • A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
    • A01B63/111—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements
    • A01B63/1112—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements using a non-tactile ground distance measurement, e.g. using reflection of waves
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
    • A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
    • A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
    • A01B63/111—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements
    • A01B63/114—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements to achieve a constant working depth
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06—Systems determining the position data of a target
    • G01S15/08—Systems for measuring distance only
    • G01S15/10—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/523—Details of pulse systems
    • G01S7/526—Receivers
    • G01S7/527—Extracting wanted echo signals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/539—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

UN SISTEMA DETECTOR DE DISTANCIAS (10) QUE INCLUYE UN TRANSDUCTOR ULTRASONICO (XM1), UN TRANSCEPTOR (12) Y UNA UNIDAD DE TRATAMIENTO DE SEÑALES BASADA EN UN MICROCONTROLADOR (14). EL TRANSDUCTOR (12) GENERA PERIODICAMENTE Y DIRIGE HACIA EL TERRENO UNA SEÑAL ULTRASONICA DE DOS FRECUENCIAS. LAS SEÑALES DE ECO DE LA TIERRA Y/O DE CUALQUIER COSECHA O DESECHO QUE PUDIERAN INTERVENIR SE VUELVEN A REFLEJAR EN EL TRANSDUCTOR (12) Y A CONTINUACION SON TRATADAS. EL SISTEMA GENERA SEÑALES ENVOLVENTES DE ECO AMPLIFICADAS Y FILTRADAS. LOS TIEMPOS DE ESTABLECIMIENTO Y DE FIN NOMINAL SE DETERMINAN COMO LAS VECES QUE LAS SEÑALES DE ECO ATRAVIESAN UN VALOR UMBRAL QUE ES UNA CIERTA PROPORCION DE UN VALOR DE AMPLITUD MAXIMO DEL ECO. SE DERIVA UN VALOR DE DISTANCIA CERCANA A PARTIR DEL TIEMPO DE ESTABLECIMIENTO DEL PRIMER ECO QUE SOBREPASA UNA AMPLITUD MINIMA. SE DERIVA UN VALOR DE DISTANCIA LEJANA COMO EL TIEMPO DE FIN NOMINAL DE LA ULTIMA SEÑAL DE ECO QUE TENGA UNA AMPLITUD QUE SOBREPASE UN CIERTO VALOR. SEDERIVAN MULTIPLES VALORES DE AMPLITUD Y DE TIEMPO DE ECO A PARTIR DEL ECO DE MAXIMA AMPLITUD. ESTOS VALORES SE UTILIZAN PARA EVITAR QUE LOS ECOS QUE TIENEN LUGAR TRAS EL TIEMPO DE ECO MULTIPLE CON MENOS DE UNA CIERTA AMPLITUD SE UTILICEN PARA DETERMINAR EL VALOR DE DISTANCIA LEJANA. ESTE VALOR DE DISTANCIA LEJANA REPRESENTA LA DISTANCIA A LA TIERRA Y LOS ECOS MAS DEBILES Y ANTERIORES DE LOS DESECHOS O COSECHAS Y LOS ECOS MULTIPLES Y POSTERIORES SE PUEDEN IGNORAR.
ES95102041T 1990-05-29 1991-05-27 Sistema de medir distancias. Expired - Lifetime ES2137384T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/529,828 US5060205A (en) 1990-05-29 1990-05-29 Ultrasonic distance measuring system

Publications (1)

Publication Number Publication Date
ES2137384T3 true ES2137384T3 (es) 1999-12-16

Family

ID=24111407

Family Applications (3)

Application Number Title Priority Date Filing Date
ES91108554T Expired - Lifetime ES2075915T3 (es) 1990-05-29 1991-05-27 Sistema ultrasonico para medida de distancias.
ES95102041T Expired - Lifetime ES2137384T3 (es) 1990-05-29 1991-05-27 Sistema de medir distancias.
ES95102042T Expired - Lifetime ES2145170T3 (es) 1990-05-29 1991-05-27 Metodo para medir una distancia.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
ES91108554T Expired - Lifetime ES2075915T3 (es) 1990-05-29 1991-05-27 Sistema ultrasonico para medida de distancias.

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES95102042T Expired - Lifetime ES2145170T3 (es) 1990-05-29 1991-05-27 Metodo para medir una distancia.

Country Status (7)

Country Link
US (1) US5060205A (es)
EP (3) EP0653645B1 (es)
JP (1) JP2966964B2 (es)
CA (1) CA2041174C (es)
DE (3) DE69132170T2 (es)
DK (3) DK0459336T3 (es)
ES (3) ES2075915T3 (es)

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KR102322776B1 (ko) 2010-02-18 2021-11-04 마우이 이미징, 인코포레이티드 초음파 이미지를 구성하는 방법 및 이를 위한 다중-개구 초음파 이미징 시스템
SE535699C2 (sv) * 2011-01-26 2012-11-13 Vaederstad Verken Ab Lantbruksredskap samt metod för bearbetning av jord
JP6407719B2 (ja) 2011-12-01 2018-10-17 マウイ イマギング，インコーポレーテッド ピングベース及び多数開口ドップラー超音波を用いた運動の検出
EP2833791B1 (en) * 2012-03-26 2022-12-21 Maui Imaging, Inc. Methods for improving ultrasound image quality by applying weighting factors
CN104620128B (zh) 2012-08-10 2017-06-23 毛伊图像公司 多孔径超声探头的校准
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Also Published As

Publication number Publication date
DE69132170T2 (de) 2000-09-28
DK0653644T3 (da) 2000-04-10
DK0459336T3 (da) 1995-11-27
EP0653645A3 (en) 1995-06-14
DE69131669D1 (de) 1999-11-04
ES2075915T3 (es) 1995-10-16
US5060205A (en) 1991-10-22
DE69131669T2 (de) 2000-04-06
EP0459336A1 (en) 1991-12-04
EP0653645B1 (en) 2000-05-03
DE69112273D1 (de) 1995-09-28
EP0459336B1 (en) 1995-08-23
EP0653644A3 (en) 1995-06-14
CA2041174C (en) 1997-10-07
ES2145170T3 (es) 2000-07-01
DE69112273T2 (de) 1996-02-01
EP0653645A2 (en) 1995-05-17
CA2041174A1 (en) 1991-11-30
JPH0627236A (ja) 1994-02-04
EP0653644A2 (en) 1995-05-17
DE69132170D1 (de) 2000-06-08
EP0653644B1 (en) 1999-09-29
DK0653645T3 (da) 2000-09-18
JP2966964B2 (ja) 1999-10-25

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