EP2097757A2 - Procédé et dispositif de déclenchement de l'enregistrement d'un signal de mesure - Google Patents

Procédé et dispositif de déclenchement de l'enregistrement d'un signal de mesure

Info

Publication number
EP2097757A2
EP2097757A2 EP07819786A EP07819786A EP2097757A2 EP 2097757 A2 EP2097757 A2 EP 2097757A2 EP 07819786 A EP07819786 A EP 07819786A EP 07819786 A EP07819786 A EP 07819786A EP 2097757 A2 EP2097757 A2 EP 2097757A2
Authority
EP
European Patent Office
Prior art keywords
trigger
measurement signal
triggering
recording
trigmerkl
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.)
Ceased
Application number
EP07819786A
Other languages
German (de)
English (en)
Inventor
Kurt Schmidt
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.)
Rohde and Schwarz GmbH and Co KG
Original Assignee
Rohde and Schwarz GmbH and Co KG
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 Rohde and Schwarz GmbH and Co KG filed Critical Rohde and Schwarz GmbH and Co KG
Publication of EP2097757A2 publication Critical patent/EP2097757A2/fr
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/02—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form
    • G01R13/0218—Circuits therefor
    • G01R13/0254—Circuits therefor for triggering, synchronisation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/16—Spectrum analysis; Fourier analysis

Definitions

  • the invention relates to a method and a device for triggering a recording of a measurement signal.
  • Gauges and systems often provide the representation of signal level distributions of a stochastic measurement signal over frequency or over time, as disclosed, for example, in US 4,890,237.
  • the invention task is by an inventive device for triggering a recording of a measurement signal with the features of claim 1 or with the features of claim 2 and by an inventive method for triggering a recording of a measurement signal with the features of claim 6 or with the Characteristics of claim 7 solved.
  • Advantageous developments of the invention are listed in the respective dependent claims. According to the invention, in a discriminator in each case an observation interval for each characteristic pair consisting of two mutually dependent parameters of the measurement signal - for example, the signal level range of
  • Measurement signal as a function of the time or the frequency of the time or frequency grid used - each determined frequency of detected signal levels of the measurement signal compared to an upper and lower threshold associated with the respective pair of parameters and in a first variant of the invention in the case that each determined frequency value is outside the frequency range defined by the upper and lower threshold value, a first trigger flag associated with the respective characteristic pair activated.
  • the upper and lower threshold values belonging to the respective parameter pair form a tolerance range for the frequency of the frequency of a reference measurement signal to be measured within an observation interval within an observation interval.
  • a frequency value detected outside the tolerance range defined by the lower and upper threshold values for a measurement signal therefore represents an indication of a measurement signal that is noisy within the respective parameter pair.
  • a first trigger flag associated with the respective parameter pair is activated.
  • a frequency value detected within a tolerance range for a measurement signal defined by the lower and upper threshold values therefore represents an indication of a correct, interference-free measurement signal within the respective parameter pair.
  • a first logic subset of the first variant of the invention is provided to the respective discriminator in a second substep.
  • the respective discriminator is also followed by a first logic comparison unit which, for each characteristic pair of the frequency distribution, includes the associated first trigger markers within a respectively predefined sub-range of mutually adjacent characteristic pairs of the frequency distribution, in each case with the first belonging to the respective characteristic pair of the frequency distribution Reference flag on identity compares and activated in the case of identity in at least N characteristic pairs of the respective subarea belonging to the respective subarea second trigger flag.
  • the activation of at least N first reference markers in a column of a subrange of the spectral frequency distribution of the measurement signal makes it possible, for example, to identify sinusoidal interferers in this subrange of the frequency spectrum of the measurement signal (see the sinusoidal interferer in the enlarged subrange of the frequency distribution marked by arrow) in the frequency spectrum of a measurement signal in Fig. 8).
  • the first trigger flags activated by the discriminator are in a first sub-variant of the invention consisting of only one discriminator and the second trigger flags of the second and third sub-variants of the invention activated by the first logic comparison unit each supplied to a second logic comparison unit, the respectively associated to each characteristic pair of frequency distribution first and second trigger markers are each compared to one of the respective characteristic pair belonging to the frequency distribution second Referenzmerker identity and identity in at least N characteristic pairs or in At least N partial areas a triggering of the recording of the measurement signal started. With the activation of second reference flags, it is possible to realize any logical connections between the individual first and second trigger flags also over several consecutive observation intervals.
  • FIG. 1 shows a flowchart of a first sub-variant of the first embodiment of the method according to the invention for triggering a recording of a measurement signal
  • FIG. 2 shows a flowchart of a first sub-variant of the second embodiment of the method according to the invention for triggering a recording of a measurement signal
  • FIG. 3 shows a flow chart of a second sub-variant of the first embodiment of the method according to the invention for triggering a recording of a measurement signal
  • FIG. 4 shows a flow chart of a third sub-variant of the first embodiment of the method according to the invention for triggering a recording of a measurement signal
  • 5 shows a block diagram of a first embodiment of the device according to the invention for triggering a recording of a measurement signal
  • FIG. 6 shows a block diagram of a second embodiment of the device according to the invention for triggering a recording of a measurement signal
  • 7A, 7B show a spectral representation of a bandpass signal with subregions of the frequency distribution in the second or third subvariants of the two embodiments of the method according to the invention and in the second embodiment of the inventive device for triggering a recording of a measuring signal
  • FIG. 8 shows a spectral representation of a bandpass signal with a sinusoidal interference signal in a subrange of the frequency distribution.
  • the occurrence of a trigger event is determined for each determined frequency value NofHit of a frequency distribution of characteristic pairs of a measurement signal as follows:
  • the frequency value NofDreffer determined for each parameter pair from, for example, a respective signal level range and in each case one value of the time or frequency grid used is compared with an upper and lower threshold value UpperNofTrigger, LowerNofTrigger given for the respective parameter pair.
  • the upper and lower threshold values UpperNofTrigger, LowerNofTruck which are respectively predetermined for each characteristic pair and stored in a memory 2 of the device according to the invention, can be determined beforehand by determining in a reference measurement for a reference measurement signal with a signal characteristic identical to the measurement signal. and minimum value of all in each observation interval respectively determined frequency values Nof hit over a certain
  • Measuring period is determined. If the ascertained frequency value NofPartner is outside the frequency value range defined by the upper and lower threshold values UpperNofTarget, LowerNofTruck, the measurement signal to be measured deviates from the reference measurement signal for the respectively considered parameter pair. The deviation between the measurement signal and the reference measurement signal for the respective parameter pair represents a trigger event for the respective parameter pair.
  • a first trigger flag TrigMerkl belonging to the respective characteristic pair is activated in the discriminator 1 for each trigger event identified for the respective parameter pair.
  • each first trigger flag TrigMerkl which is respectively activated or not activated for the respective characteristic pair is associated with a respective characteristic pair from User activated and in the memory 2 of the device according to the invention shown in FIG. 5 stored second reference flags RefMerk2 compared to identity.
  • second reference markers RefMerk2 makes it possible to represent the deviation between the measurement signal and the reference measurement signal in the case of several user-selected characteristic pairs of the frequency distribution, which represent the entire course of the signal level of the measurement signal over all values of the time or frequency grid used , to investigate.
  • Characteristic pairs of the frequency distribution of the measurement signal can be determined not only over an observation interval but over several observation intervals in order to achieve a greater significance in the deviation between the measurement signal and the reference measurement signal. prevails
  • the user can specify in how many characteristic pairs a deviation between the measurement signal and the reference measurement signal must be present in order to trigger a triggering of the recording of the measurement signal.
  • the frequency distribution of the measurement signal in a discriminator 1 of the first embodiment of the device according to the invention according to FIG. 5 determines whether the respectively determined frequency value NofTrucks lies within the upper and lower threshold values UpperNofTreff, LowerNofTruck, belonging to the respective parameter pair. In this way it is possible to establish an identity between the acquired measurement signal and a previously determined reference measurement signal. Signal to identify the respective parameter pair. If the frequency value NofTreffer determined for the respective parameter pair is within the upper and lower threshold UpperNofTouch, LowerNofTouch, a trigger event is identified for the respective parameter pair.
  • the first trigger flag TrigMerkl associated with the respective characteristic pair is present in the presence of a trigger event associated with the respective parameter pair activated in the discriminator 1.
  • step S120 in analogy to the method step S30, the first sub-variant of the first embodiment becomes each one for the respective one
  • Parameter pair associated first trigger flag TrigMerkl with the belonging to the respective parameter pair second reference flag RefMerk2 compared to identity. If there is identity between the individually activated first trigger flag TrigMerkl and the associated second reference flag RefMerk2 activated by the user and thus an identity between the measurement signal and the associated reference measurement signal in the course of the signal level of the measurement signal over all values of the time used. or frequency rasters, there is a trigger time for triggering the recording of the measurement signal and a trigger trigger signal is activated.
  • the individual activated first trigger flags TrigMerkl can be compared with the associated user-activated second reference flag RefMerk2 to increase the significance in the identity between the measurement signal and reference measurement signal over several observation intervals.
  • the third corresponds in its first two method steps S200 and S210 to the first two method steps S10 and S20 of the first sub-variant of the first embodiment of the method according to the invention and consequently determines whether the frequency value Nof hit determined for the respective parameter pair lies outside the frequency value range which is defined by the upper and lower threshold value UpperNoFreffer, LowerNoFrefferent belonging to the respective parameter pair, and therefore there is a trigger event associated with the respective parameter pair. If there is a trigger event associated with the respective characteristic pair, the first trigger flag TrigMerkl associated with the respective parameter pair is activated.
  • step S220 it is determined in a first logic comparison unit 4 of the second embodiment of the device according to the invention for each predetermined subrange of the frequency distribution whether at least one first trigger flag TrigMerkl is activated in the respective subrange of the frequency distribution , If this is the case, a deviation between the measurement signal and the reference measurement signal is present at least limited to the respective subarea of the frequency distribution, and a second trigger flag TrigMerk2 belonging to the respective subarea is activated.
  • the definition of the individual subregions of the frequency distribution are determined in advance by the user by specifying the subregion boundaries which are likewise stored in the memory 2 of the device according to the invention in FIG.
  • FIG. 7A shows by way of example a partial region 10 for determining an identity or deviation between the measurement signal and the reference measurement signal in accordance with the first or second embodiment of the method according to the invention.
  • FIG. 7B shows, by way of example, partial regions 11, 12, 13 and 14 for determining only a deviation between the measurement signal and the reference measurement signal according to the first embodiment of the method according to the invention.
  • step S230 analogously to method step S30 of the first sub-variant of the first embodiment of the method according to the invention, all second trigger flags TrigMerk2 belonging to the respective subarea are checked for identity with the second reference flag RefMerk2 belonging to the respective subarea belonging to the user selected and stored in memory 2. This identity check can also extend over several observation intervals.
  • an activated second trigger flag TrigMerk2 and an associated user-activated second reference flag RefMerk2 in at least N subregions of the frequency distribution If there is an identity between an activated second trigger flag TrigMerk2 and an associated user-activated second reference flag RefMerk2 in at least N subregions of the frequency distribution, and therefore deviates the measurement signal from the associated reference measurement signal in at least N subregions of the frequency distribution, then a triggering time for triggering the recording of the measurement signal has occurred and the associated trigger trigger signal is activated.
  • the user can specify in how many subregions of the frequency distribution a deviation between the measurement signal and the reference measurement signal must exist until a triggering of the recording of the measurement signal is started.
  • the third sub-variant of the first embodiment of the method according to the invention for triggering a recording of a measurement signal in FIG. 4 corresponds to the first in the first two method steps S300 and S310 both method steps SlO and S20 of the first sub-variant of the first embodiment of the method according to the invention.
  • the first trigger flag TrigMerkl activated for the respective characteristic pair of the frequency distribution in method step S310 in the case of an occurrence of a frequency value Nof hit belonging to the respective characteristic pair pair identified in method step S300 outside the upper and lower threshold value
  • the UpperNofTouch, LowerNofTouch defined frequency value range of the respective parameter pair is compared with an associated user-activated first reference flag RefMerkl for identity. If at least N activated first trigger flags TrigMerkl of a respectively predefined subregion of the frequency distribution identity to the at least N associated user-activated first reference flags RefMerkl, there is a deviation between the measurement signal and the associated reference in at least N characteristic pairs of the respective subrange of the frequency distribution -Mess signal and a belonging to the respective subarea trigger trigger TrigMerk2 is activated.
  • the choice of the size N allows the user to specify the number of deviations between the measurement signals and the associated reference measurement signal which is required in each subset of the frequency distribution and which is required to activate the triggering.
  • each second trigger flag TrigMerk2 belonging to the respective subarea is checked for identity with the second reference flag RefMerk2 belonging to the respective subarea belonging to the user. This identity check can also take place over several observation inter- extend.
  • a third sub-variant for the second embodiment of the method according to the invention for triggering a recording of a measurement signal results from the combination of method steps S10 and S20 of the first sub-variant for the second embodiment of the inventive method according to FIG. 1 and the method steps S320 and S330 4, wherein the identity comparison in the method steps S320 and S330 via at least N first trigger flag TrigMerkl and at least N associated first reference flag RefMerkl by an identity comparison over all first trigger flags TrigMerkl and all associated first reference flag RefMerkl is replaced.
  • the invention is not limited to the illustrated embodiments and sub-variants. Instead of determining the lower and upper threshold values UpperNofTrucks belonging to the individual parameter pairs,
  • LowerNofResults via a previously performed reference measurement with a reference measurement signal can also be used for a priori spectral distributions of measurement signals.
  • the recognition and synchronization of a burst signal by means of a deterministic synchronization sequence can thus be replaced by a previously known spectral distribution of a burst signal by the method according to the invention and the device according to the invention, in which only the statistical see characteristics of the measurement signal to be exploited.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Recording Measured Values (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

La présente invention concerne un dispositif conçu pour déclencher l'enregistrement d'un signal de mesure en fonction d'au moins un événement déclencheur pouvant être identifié dans une distribution de fréquence de paires de paramètres formées de deux paramètres du signal de mesure qui dépendent l'un de l'autre. Ledit dispositif comprend un discriminateur (1) conçu pour identifier des événements déclencheurs présentant respectivement une fréquence détectée par rapport à chaque paire de paramètres et une fréquence (NofTreffer) qui, dans le premier mode de réalisation, se trouve hors d'une plage formée par une valeur seuil supérieure (UpperNofTreffer) et une valeur seuil inférieure (LowerNofTreffer) appartenant respectivement à la paire de paramètres et, dans le second mode de réalisation, se trouve dans cette plage, et pour caractériser chaque événement déclencheur apparaissant à l'aide d'un premier marqueur de déclenchement activé (TrigMerk1) qui appartient à chaque paire de paramètres. Une mémoire (2) permet de mémoriser au moins la valeur seuil supérieure (UpperNofTreffer) et la valeur seuil inférieure (LowerNofTreffer) pour chaque paire de paramètres.
EP07819786A 2006-11-28 2007-11-13 Procédé et dispositif de déclenchement de l'enregistrement d'un signal de mesure Ceased EP2097757A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006056151A DE102006056151A1 (de) 2006-11-28 2006-11-28 Verfahren und Vorrichtung zur Triggerung einer Aufzeichnung eines Mess-Signals
PCT/EP2007/009806 WO2008064769A2 (fr) 2006-11-28 2007-11-13 Procédé et dispositif de déclenchement de l'enregistrement d'un signal de mesure

Publications (1)

Publication Number Publication Date
EP2097757A2 true EP2097757A2 (fr) 2009-09-09

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EP07819786A Ceased EP2097757A2 (fr) 2006-11-28 2007-11-13 Procédé et dispositif de déclenchement de l'enregistrement d'un signal de mesure

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Country Link
US (1) US8209142B2 (fr)
EP (1) EP2097757A2 (fr)
DE (1) DE102006056151A1 (fr)
WO (1) WO2008064769A2 (fr)

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DE102007054480B4 (de) * 2007-11-13 2017-12-14 Roto Frank Ag Beschlagteil
US8489350B2 (en) * 2009-03-13 2013-07-16 Tektronix, Inc. Frequency domain bitmap triggering using color, density and correlation based triggers
US8880369B2 (en) * 2009-03-13 2014-11-04 Tektronix, Inc. Occupancy measurement and triggering in frequency domain bitmaps
US8762085B2 (en) * 2010-10-13 2014-06-24 Schneider Electric USA, Inc. Method of estimating short circuit current available by analysis of DC charging circuit
DE102013200941A1 (de) * 2012-11-12 2014-05-15 Rohde & Schwarz Gmbh & Co. Kg Verfahren und Vorrichtung zur Bestimmung einer Triggerbedingung für ein seltenes Signalereignis

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EP1387518A2 (fr) * 2002-07-31 2004-02-04 Agilent Technologies, Inc. Outils sur écran pour la mesure de la figure en oeil
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Publication number Priority date Publication date Assignee Title
EP0448322A2 (fr) * 1990-03-23 1991-09-25 Tektronix Inc. Détermination automatique des paramètres d'impulsion de fonctions à valeurs multiples
EP1340987A2 (fr) * 1996-05-24 2003-09-03 Lecroy S.A. Ecran d'oscilloscope numérique et procédé afferent
EP0962781A2 (fr) * 1998-06-05 1999-12-08 Tektronix, Inc. Détection des formes d'ondes non usuelles
EP1387518A2 (fr) * 2002-07-31 2004-02-04 Agilent Technologies, Inc. Outils sur écran pour la mesure de la figure en oeil
US20070229055A1 (en) * 2006-03-31 2007-10-04 Kabushiki Kaisha Toshiba Digital oscilloscope and method for displaying signal

Also Published As

Publication number Publication date
WO2008064769A3 (fr) 2008-07-17
US8209142B2 (en) 2012-06-26
DE102006056151A1 (de) 2008-05-29
US20100076718A1 (en) 2010-03-25
WO2008064769A2 (fr) 2008-06-05

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