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1. WO2005062002 - METHOD AND DEVICE FOR OPTIMIZING THE EMISSION IN PULSE ECHO METHODS

Publication Number WO/2005/062002
Publication Date 07.07.2005
International Application No. PCT/EP2004/053459
International Filing Date 14.12.2004
IPC
G01F 23/284 2006.01
GPHYSICS
01MEASURING; TESTING
FMEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME
23Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm
22by measurement of physical variables, other than linear dimensions, pressure, or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
28by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
284Electromagnetic waves
G01S 13/02 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO 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
13Systems 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
02Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
G01S 13/10 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO 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
13Systems 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
02Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
06Systems determining position data of a target
08Systems for measuring distance only
10using transmission of interrupted, pulse modulated waves
G01S 13/79 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO 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
13Systems 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
74Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
79Systems using random coded signals or random pulse repetition frequencies
G01S 13/88 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO 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
13Systems 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
88Radar or analogous systems, specially adapted for specific applications
CPC
G01F 23/284
GPHYSICS
01MEASURING; TESTING
FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
23Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm
22by measurement of physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
28by measuring the variations of parameters of electric or acoustic waves applied directly to the liquid or fluent solid material
284Electromagnetic waves
G01S 13/0209
GPHYSICS
01MEASURING; TESTING
SRADIO 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
13Systems 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
02Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
0209Systems with very large relative bandwidth, i.e. larger than 10 %, e.g. baseband, pulse, carrier-free, ultrawideband
G01S 13/106
GPHYSICS
01MEASURING; TESTING
SRADIO 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
13Systems 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
02Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
06Systems determining position data of a target
08Systems for measuring distance only
10using transmission of interrupted, pulse modulated waves
106using transmission of pulses having some particular characteristics
G01S 13/88
GPHYSICS
01MEASURING; TESTING
SRADIO 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
13Systems 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
88Radar or analogous systems specially adapted for specific applications
Applicants
  • ENDRESS+HAUSER GMBH+CO. KG [DE]/[DE] (AllExceptUS)
  • MICHALSKI, Bernhard [DE]/[DE] (UsOnly)
Inventors
  • MICHALSKI, Bernhard
Agents
  • ANDRES, Angelika
Priority Data
103 59 534.117.12.2003DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN UND VORRICHTUNG ZUR OPTIMIERUNG DER EMISSION BEI PULSECHOVERFAHREN
(EN) METHOD AND DEVICE FOR OPTIMIZING THE EMISSION IN PULSE ECHO METHODS
(FR) PROCEDE ET DISPOSITIF POUR OPTIMISER L'EMISSION DANS DES METHODES PAR ECHO D'IMPULSION
Abstract
(DE)
Emmissionswerte bisher bekannter breitbandiger Pulsechoverfahren, insbesondere solcher, die in der industriellen Meßtechnik zur Füllstandsmessung verwendet werden, erreichen häufig die zulässigen Grenzwerte. Um eine allfällige funktechnische Zulassungen des betreffenden Messgerätes zu vermeiden, schlägt die Erfindung ein Verfahren und eine Schaltung zur Optimierung der Emission von breitbandigen Sendepulsen eines Pulsechoverfahrens vor, bei dem die Sendepulse mit einer vor­gewählten Pulsrepetitionfrequenz gesendet werden. Das erfindungsgemäße Verfahren und die Schaltung sehen vor, dass die Polarität eines Pulses mit jedem Zyklus der Pulsrepetitionfrequenz entsprechend einer Zufallsfolge umgeschaltet wird oder dass einzelne Pulse mit jedem Zyklus der Pulsrepetitionfrequenz entsprechend einer Zufallsfolge unterdrückt werden.
(EN)
Emission values of existing broadband pulse echo methods, particularly those used in industrial metrology for level measuring, frequently reach the permissible limit values. In order to avoid possible radio permissions of the relevant measuring instrument, the invention provides a method and a circuit for optimizing the emission of broadband transmit pulses of a pulse echo method, during which the transmit pulses are transmitted with a pre-selected pulse repetition frequency. The inventive method and the circuit provide that the polarity of a pulse is, with each cycle of the pulse repetition frequency, reversed according to a random sequence or that individual pulses are, with each cycle of the pulse repetition frequency, suppressed according to a random sequence.
(FR)
Selon l'invention, les valeurs d'émission de méthodes par écho d'impulsion à large bande connues, notamment celles qui sont utilisées en technique de mesure industrielle pour mesurer des niveaux, atteignent fréquemment les valeurs-seuils autorisées. Afin d'éviter de potentielles homologations radiotechniques de l'appareil de mesure concerné, il est prévu selon l'invention, un procédé et un circuit permettant d'optimiser l'émission d'impulsions d'émission à large bande d'une méthode par écho d'impulsion, selon lequel l'impulsion d'émission est émise à une fréquence par répétition des impulsions, présélectionnée. Il est prévu selon le procédé et le circuit de l'invention d'inverser la polarité d'une impulsion à chaque cycle de la fréquence à répétition des impulsions, en fonction d'une séquence aléatoire ou de supprimer des impulsions individuelles à chaque cycle de la fréquence à répétition des impulsions, en fonction d'une séquence aléatoire.
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