FR2593609A1 - Device for converting a path followed into pulses - Google Patents

Device for converting a path followed into pulses Download PDF

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Publication number
FR2593609A1
FR2593609A1 FR8700779A FR8700779A FR2593609A1 FR 2593609 A1 FR2593609 A1 FR 2593609A1 FR 8700779 A FR8700779 A FR 8700779A FR 8700779 A FR8700779 A FR 8700779A FR 2593609 A1 FR2593609 A1 FR 2593609A1
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France
Prior art keywords
pulses
linked
frequency
mixer
converting
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.)
Granted
Application number
FR8700779A
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French (fr)
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FR2593609B3 (en
Inventor
Hristo Ivanov Medarov
Vesselin Lukov Valtschanov
Konstantin Borissov Demirev
Vesselin Borissov Demirev
Alexandr Saveljevits Kaschurko
Jurii Ivanovitsch Feodorov
Valentin Nikolaevitsch Horujii
Alexandr Trofimovitsch Golscha
Mihail Grigorievitsch Kinker
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SO RESPROM
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SO RESPROM
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Publication of FR2593609A1 publication Critical patent/FR2593609A1/en
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Publication of FR2593609B3 publication Critical patent/FR2593609B3/en
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C22/00—Measuring distance traversed on the ground by vehicles, persons, animals or other moving solid bodies, e.g. using odometers, using pedometers
    • G01C22/02—Measuring distance traversed on the ground by vehicles, persons, animals or other moving solid bodies, e.g. using odometers, using pedometers by conversion into electric waveforms and subsequent integration, e.g. using tachometer generator
    • 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
    • G01S13/60—Velocity or trajectory determination systems; Sense-of-movement determination systems wherein the transmitter and receiver are mounted on the moving object, e.g. for determining ground speed, drift angle, ground track

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Toys (AREA)

Abstract

The device for converting the path followed into pulses comprises a radio wave generator-mixer 1, linked to an antenna 2 transmitting on a defined frequency and pointed at an acute angle in the range of 35 to 45 DEG with respect to the earth's surface 3. The angle and the frequency are reciprocally linked in such a way that the radio wave generator 1 is attached on one side to a source of current supply 4 and on the other side to a load resistor of low ohmic value 5 which is linked to the input of an amplifier 6 whose output is linked to a pulse shaper 7. This device is used in systems for monitoring, measuring and controlling moving agricultural machinery.

Description

Dispositif de transformation en impulsions d1un trajet parcouru
L'invention concerne un dispositif de transformation en impulsionsd'un trajet parcouru, qui est utilisé dans les systèmes de contrôle, mesure et commande de machines agricoles mobiles.Device for transforming a path traveled into pulses
The invention relates to a device for transforming a path traveled into pulses, which is used in systems for monitoring, measuring and controlling mobile agricultural machines.

On connait un dispositif de transformation en impulsions d'un trajet parcouru faisant partie d'un dispositif de contrôle d'une machine de semence, qui est constitué par une bande magnétique fermée sur laquelle a été fait un enregistrement de signes uniformément disposés. Le mécanisme de mise en marche de la bande magnétique fermée est actionné par une connexion mécanique à partir d'une roue de la machine agricole roulant sur le sol. Au-dessus de la bande est disposée une tête magnétique de lecture qui est reliée à un amplificateur formateur et séparateur de fréquen- ce. La tête magnétique retire l'information de la bande magnétique laquelle est proportionnelle au trajet parcouru. There is known a device for transforming a path traveled into pulses which is part of a device for controlling a seed machine, which consists of a closed magnetic strip on which a recording of uniformly arranged signs has been made. The mechanism for starting the closed magnetic strip is actuated by a mechanical connection from a wheel of the agricultural machine rolling on the ground. Above the strip is arranged a magnetic read head which is connected to a trainer amplifier and frequency separator. The magnetic head removes the information from the magnetic strip which is proportional to the path traveled.

L'inconvénient du dispositif connu de transformation en impulsions du trajet parcouru est surtout la faible précision d'opération due au glissement ou patinage des roues de la machine agricole. En plus, il faut disposer d'un séparateur de fréquence de réajustage afin de prévoir les différences dans le coefficient d'engrenage des transmissions mécaniques entre les roues de la machine agricole et le mécanisme de mise en marche de la bande du dispositif, ce qui complique et diminue sa fiabilité. The drawback of the known device for converting the distance traveled into pulses is above all the low operating precision due to the slipping or slipping of the wheels of the agricultural machine. In addition, it is necessary to have a readjustment frequency separator in order to predict the differences in the gear coefficient of the mechanical transmissions between the wheels of the agricultural machine and the mechanism for starting the belt of the device, which complicates and decreases its reliability.

L'objet de l'invention est de fournir un dispositif de transformation en impulsions du trajet parcouru ayant une précision d'opération élevée, une construction simplifiée et unefiabilité augmentée. The object of the invention is to provide a device for transforming the path traveled into pulses having high operating precision, simplified construction and increased reliability.

Cet objet est atteint en reliant un générateur-mélangeur d'ondes radio à une antenne émettant sur une fréquence déterminée et qui est dirigée sous un angle aigu dans la gamme de 35 à 450 par rapport à la surface terrestre. L'angle et la fréquence sont reliés réciproquement de manière que le générateurmélangeur soit rattaché d'un côté à une alimentation en courant et de l'autre côté à une résistance de charge de faible valeur ohmique qui est reliée à l'entrée d'un amplificateur dont la sortie est reliée à un formateur d'impulsions. This object is achieved by connecting a generator-mixer of radio waves to an antenna emitting on a determined frequency and which is directed at an acute angle in the range of 35 to 450 relative to the earth's surface. The angle and the frequency are interconnected so that the generator-mixer is connected on one side to a current supply and on the other side to a load resistance of low ohmic value which is connected to the input of a amplifier whose output is connected to a pulse trainer.

Les avantages du dispositif de transformation en impulsions du trajet parcouru selon l'invention résident dans la précision d'opération très élevée , la construction très simplifiée et la fiabilité augmentée. The advantages of the device for transforming the path traveled according to the invention into pulses lie in the very high operating precision, the very simplified construction and the increased reliability.

Une réalisation à titre d'exemple est montrée sur la figure unique annexée sous forme d'un schéma synoptique. An exemplary embodiment is shown in the single figure appended in the form of a block diagram.

Un générateur-mélangeur d'ondes radio 1 est relié à l'antenne 2 émettant sur une fréquence déterminée et qui est dirigée sous un angle aigu de 35 à 45 par rapport à la surface terrestre 3. Le générateur-mélangeur 1 est rattaché d'un côté à une source d'alimentation en courant 4 et de l'autre à une résistance de charge de faible valeur ohmique 5 qui est reliée aussi à l'entrée d'un amplificateur 6 dont la sortie est reliée au formateur d'impulsions 7. A generator-mixer of radio waves 1 is connected to the antenna 2 transmitting on a determined frequency and which is directed at an acute angle of 35 to 45 relative to the earth's surface 3. The generator-mixer 1 is attached to one side to a current supply source 4 and the other to a load resistance of low ohmic value 5 which is also connected to the input of an amplifier 6 whose output is connected to the pulse trainer 7 .

Le fonctionnement du dispositif de transformation en impulsions du trajet parcouru est le suivant : En fournissant une tension constante à partir d'une source d'alimentation en courant 4 vers le générateurmélangeur d'ondes radio 1, il commence à se former dans ce dernier un ai- gnal d'ondes radio qui est émis par l'antenne 2 vers la surface terrestre 3 sous un angle aigu. Une partie du signal d'ondes radio réfléchie par la surface terrestre 3 revient de nouveau par l'antenne 2 dans le générateurmélangeur 1 En raison du déplacement réciproque de l'antenne 2 et de la surface terrestre 3, le signal réfléchi qui tombe sur l'antenne a une fréquence différente de celle de la fréquence émise. Par suite du mélange, il se produit une superposition d'une composante variable à basse fréquence avec une forme sinusoidale sur le courant continu qui sort du générateur d'ondes radio 1. Chaque période de la sinusoide ainsi obtenue correspond à un secteur déterminé du trajet parcouru. The operation of the device for converting the path traveled into pulses is as follows: By supplying a constant voltage from a current supply source 4 to the radio wave generator generator 1, it begins to form in the latter a of radio waves which is emitted by antenna 2 towards the earth's surface 3 at an acute angle. Part of the radio wave signal reflected by the earth's surface 3 returns again through the antenna 2 in the generator mixer 1 Due to the reciprocal movement of the antenna 2 and the earth's surface 3, the reflected signal which falls on the antenna has a frequency different from that of the transmitted frequency. As a result of the mixing, a variable low frequency component is superimposed with a sinusoidal shape on the direct current which leaves the radio wave generator 1. Each period of the sinusoid thus obtained corresponds to a determined sector of the path traveled.

La composante variable du courant donne une chute de tension variable sur la résistance de charge 5, laquelle est amplifiée par l'amplificateur à basse fréquence 6 et transformée en impulsions rectangulaires par le formateur d'impulsions 7. De cette façon, le trajet parcouru est transformé en une rangée d'impulsions.  The variable component of the current gives a variable voltage drop on the load resistor 5, which is amplified by the low frequency amplifier 6 and transformed into rectangular pulses by the pulse trainer 7. In this way, the path traveled is transformed into a row of pulses.

Claims (1)

REVENDICATION CLAIM Dispositif de transformation en impulsions du trajet parcouru, caractérisé en ce qu'il comprend un générateur-mélangeur d'ondes radio () relié à une antenne (2) émettant sur une fréquence déterminée et qui est dirigée sous un angle aigu dans la gamme de 35 à 450 par rapport à la surface terrestre (3) et en ce que l'angle et la fréquence sont réciproquement reliés de manière que le générateur-mélangeur (1) soit relié d'un côté à une source d'alimentation en courant (4) et de l'autre côté à une résistance de charge de faible valeur ohmique (5) et à l'entrée d'un amplificateur (6) dont la sortie est reliée à un formateur d'impulsions (7).  Device for transforming the path traveled into pulses, characterized in that it comprises a generator-mixer of radio waves () connected to an antenna (2) emitting on a determined frequency and which is directed at an acute angle in the range of 35 to 450 with respect to the earth's surface (3) and in that the angle and the frequency are reciprocally connected so that the generator-mixer (1) is connected on one side to a current supply source ( 4) and on the other side to a load resistance of low ohmic value (5) and to the input of an amplifier (6) whose output is connected to a pulse trainer (7).
FR8700779A 1986-01-24 1987-01-23 DEVICE FOR PULSE TRANSFORMATION OF A ROUTE Expired FR2593609B3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BG7322786A BG44211A1 (en) 1986-01-24 1986-01-24 Device for impulse converting of covered distance

Publications (2)

Publication Number Publication Date
FR2593609A1 true FR2593609A1 (en) 1987-07-31
FR2593609B3 FR2593609B3 (en) 1988-04-22

Family

ID=3916639

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8700779A Expired FR2593609B3 (en) 1986-01-24 1987-01-23 DEVICE FOR PULSE TRANSFORMATION OF A ROUTE

Country Status (4)

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BG (1) BG44211A1 (en)
DD (1) DD274323A7 (en)
DE (1) DE3701933A1 (en)
FR (1) FR2593609B3 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1457742A1 (en) * 1965-12-28 1969-04-10 Inst Hydraulik Device for the regulation of intervals, especially for the depth regulation of tillage equipment
DE2635952B2 (en) * 1976-08-10 1978-11-16 Siemens Ag, 1000 Berlin Und 8000 Muenchen Distance measurement system for distance-bound vehicles using a Doppier radar device
US4231039A (en) * 1978-12-28 1980-10-28 Glymar Radar speedometer
JPS57194371A (en) * 1981-05-27 1982-11-29 Hitachi Ltd Doppler radar type vehicle speedometer
US4630685A (en) * 1983-11-18 1986-12-23 Caterpillar Inc. Apparatus for controlling an earthmoving implement
DE3436601A1 (en) * 1984-10-05 1986-04-10 Amazonen-Werke H. Dreyer Gmbh & Co Kg, 4507 Hasbergen METHOD AND DEVICE FOR DETERMINING THE WORKING DEPTH OF SAEARS OF DRILLING MACHINES
JPS61118678A (en) * 1984-11-14 1986-06-05 Nippon Soken Inc Speedometer for car

Also Published As

Publication number Publication date
BG44211A1 (en) 1988-11-15
DD274323A7 (en) 1989-12-20
FR2593609B3 (en) 1988-04-22
DE3701933A1 (en) 1987-07-30

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