EP2943806A1 - Dispositif et procédé pour des capteurs d'environnement - Google Patents

Dispositif et procédé pour des capteurs d'environnement

Info

Publication number
EP2943806A1
EP2943806A1 EP13814931.5A EP13814931A EP2943806A1 EP 2943806 A1 EP2943806 A1 EP 2943806A1 EP 13814931 A EP13814931 A EP 13814931A EP 2943806 A1 EP2943806 A1 EP 2943806A1
Authority
EP
European Patent Office
Prior art keywords
signal
filter
time
signals
impulse response
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
EP13814931.5A
Other languages
German (de)
English (en)
Inventor
Matthias Karl
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2943806A1 publication Critical patent/EP2943806A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
    • G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • 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
    • 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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9314—Parking operations
    • 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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9327—Sensor installation details
    • G01S2013/93275—Sensor installation details in the bumper area
    • 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
    • G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
    • G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2015/932—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles for parking operations
    • 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
    • G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
    • G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2015/937—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles sensor installation details
    • G01S2015/938—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles sensor installation details in the bumper area
    • 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
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/285—Receivers
    • G01S7/292—Extracting wanted echo-signals
    • G01S7/2921—Extracting wanted echo-signals based on data belonging to one radar period
    • 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
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/285—Receivers
    • G01S7/292—Extracting wanted echo-signals
    • G01S7/2921—Extracting wanted echo-signals based on data belonging to one radar period
    • G01S7/2922—Extracting wanted echo-signals based on data belonging to one radar period by using a controlled threshold
    • 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
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/285—Receivers
    • G01S7/32—Shaping echo pulse signals; Deriving non-pulse signals from echo pulse signals

Definitions

  • the present invention relates to a method and a device for environment sensors.
  • the present invention relates to methods and apparatus for improved environmental sensor technology based on
  • Environment sensors in particular in the field of automotive technology, is used, for example, the distance between a vehicle and an environment object based on runtime studies on
  • Devices for environmental sensors while units on are emitted by means of which signals in the vehicle environment, whose echoes are determined by means of receivers and closed on the basis of the running time on the traversed signal path.
  • the received signal is monitored by filters such that upon the arrival of payloads, especially when arriving at
  • the filter output is strongly oriented to a value characteristic of such an event, while upon receipt of other signals (spurious signals) not related to the transmitted signal, the filter output has a different value, which depends on the filter output based on the filter output Nutzsignals strongly different. For example, to identify an echo of a particular frequency, a bandpass filter with a corresponding
  • Center frequency can be used, so that in particular on the arrival of signals having a frequency which is similar to that of the expected signal, a significant output variable is generated, while caused by frequency-less concentrated interference signals only little energy at the filter output become.
  • Modern systems often use so-called matched filters. These are referred to in the art as matched filters
  • Filter characteristics are usually derived from the unfiltered echo signal recorded under ideal conditions. In most cases, the filter is realized by means of correlation of this ideal echo signal with the received signal.
  • Frequency domain can be described and determined.
  • monitoring systems is not always a matched filter realized in the strict sense, but equivalent sizes are already in use today.
  • systems which, instead of the filter duration, use a minimum time of exceeding a threshold value in order to make the evaluation of echoes more robust against short-term disturbances.
  • today's sensors monitor throughout the echo time, i. after the end of the excitation or after the decay of the transmitter diaphragm has subsided until the end of the echo cycle, an incoming signal has at least one predefined filter duration.
  • a transmission pulse of approx. 0.3 ms (usual value for a
  • the processed receive signal must exceed a predicted threshold value for at least 0.12 ms before the signal is output as
  • Echo signal is recognized.
  • a required threshold violation has persisted for a period of at least 60% of the transmit pulse duration, i. for at least 0.2 ms, proved to be particularly effective.
  • a required threshold violation has persisted for a period of at least 60% of the transmit pulse duration, i. for at least 0.2 ms, proved to be particularly effective.
  • Direct echo cycle (that is, the echo cycle of a sensor that had itself sent out the signal at the beginning of the echo cycle) adversely affects such long filter pulse lengths.
  • the received signal must be present at least during the impulse response of the filter before the evaluation, before a possibly contained and identified echo is also recognized as a valid echo.
  • a longer filter pulse response length also means a longer period of time until the filter responds to the arrival of an echo due to a
  • Measuring method derives the presence of objects from the echo delay. To have a high separation ability of closely running time consecutive
  • Reflecting points, or echoes reflected from them, which follow closely one after the other or are even partially superimposed by the sensor, can be realized with a filter if the filter has a correspondingly short impulse response.
  • Document EP 2 251 710 A2 describes a modulation in which short and long pulses are combined in pulse bundles in order to achieve a high measuring rate with high spatial resolution near the sensor. At the same time, high-energy long pulses can be used to achieve a high signal-to-noise ratio in the distance.
  • WO 2010 063510 A1 describes a modulation with time variant
  • Transmit signal frequency It is an object of the present invention to provide a method which allows a small near measurement limit and good noise rejection.
  • the inventive Device for environment sensor on a signal converter and an evaluation unit. By means of the signal converter, the device is set up, from the
  • the evaluation unit is set up to evaluate the signals provided by the signal converter, in particular to filter them.
  • the signal converter may comprise, for example, a radar sensor, a sound transducer, in particular an ultrasound transducer or another transducer element for conversion to environment sensors of suitable signals.
  • the evaluation unit is set up to carry out a signal delay-dependent filtering of the signals received by the signal converter, wherein a first
  • a first-length impulse response is used for the filtering and a second impulse response of a second, longer length of the filter is used at a second time within a same measurement cycle.
  • the filter in the course of a measurement cycle (the time between emission of a signal into the environment until the time when no echo from the environment is expected due to the emission) the filter is considered to have a duration of an echo pulse in the filter ie, the time that elapses from the first response of the filter output to the arrival of an echo pulse until the last response of the filter output to the arrival of an echo pulse, such that a lower dwell time for early echoes is used, while a longer dwell time for later incoming echoes is provided.
  • the switching can be done differently depending on the filter type. In the scope of the present invention, therefore, both filters are to be understood which use only two different filter lengths as a function of the transit time, as well as multistage or even continuous transit time-dependent filter length adaptations. Because early incoming echoes are generally one over the other
  • Noise level on the receiving path significantly increased and thus have clearly identifiable levels can by a less accurate, but faster filtering a finer separation of successive incoming echoes and thus a smaller minimum distance for running time adjacent
  • ultrasound signals for humans and technology at a suitable dosage are harmless and the required transducers and evaluation units as a mass-produced comparatively inexpensive available.
  • the device itself can also be set up to emit signals by means of a signal converter. It is both possible to use the same signal converter for transmitting and receiving signals, as well as separate transmitters and receivers in the composite of
  • transceivers offer the ability to combine multiple functions within one and the same unit
  • the device can be set up, including the
  • Transmission signals are reliably filtered out of the ambient noise.
  • the emission of frequency-variable signals is synchronized with the filter frequency response in the receiving path of the device, so that a particularly secure detection can be carried out.
  • a separation of incoming echoes can be separated from the self-resonant frequency decaying transducer signals.
  • a time-varying threshold can be used to detect possible echoes from the incoming signal.
  • the reliability of detection can be compared to the decay signal of a formerly transmitting signal converter as well as the background noise of the echo signal amplitude Systems are increased without that incoming echoes remain below the threshold at a later time in principle.
  • an impulse response of a first length of the filter used is used as the basis for a first time within a measurement cycle, and an impulse response of a second and longer length is used for the filtering at a second (later) point in time.
  • a shorter processing time is suggested by means of the filter, while at a later time a longer processing time for realizing a better spectral separation of the useful signal from background noise and other interference signals is accepted.
  • the device according to the invention and the method according to the invention are preferred in the case of Use can be designed in distance measuring systems for automobiles.
  • the required signal transducers can in this case be arranged in particular in the region of bumpers of a vehicle and operated in accordance with the aforementioned aspects of the invention.
  • As an evaluation unit while a built-in anyway in the vehicle microprocessor can be set up by means of software code, so that additional hardware for an evaluation is not required.
  • Figure 1 is a schematic overview of components according to a
  • FIG. 2 is a timing diagram for one shown in FIG.
  • FIG. 3 shows a time diagram for one shown in FIG.
  • Device recorded ultrasonic signals in a filtering with a longer impulse response.
  • FIG. 1 shows a schematic overview of components of a device 10 according to an exemplary embodiment of the invention.
  • an ultrasonic transducer 1 which is designed as a transceiver, connected to a microprocessor 2 as an evaluation unit via a bandpass filter 3.
  • the microprocessor is set up to control the bandpass filter 3.
  • An object O in the form of a standard cylinder is located in the detection range of the ultrasonic transducer 1.
  • the device 10 is at least configured to perform the following steps. At the beginning of a measurement cycle, a signal is emitted in the direction of the object O by the illustrated device 10 or an adjacent ultrasound transducer (not shown). To this
  • the microprocessor 2 directs the bandpass filter 3 for filtering a short impulse response, although the calculation of the result in the frequency domain is somewhat inaccurate, but can be performed faster and brought to the result.
  • the microprocessor 2 alters the filter characteristic of the bandpass filter 3, at least in that it uses a longer impulse response than signals previously received for filtering by means of the ultrasound transducer 1. Because after a long signal delay, the expected echoes due to the increased
  • FIG. 2 shows two time signals S1, S2, which were recorded by means of an ultrasonic transducer 1 as a signal converter and measured by a device 10 according to the invention on the basis of impulse responses of different lengths.
  • the signal voltage of the filter output is plotted in volts logarithmic, while the abscissa represents the distance of the
  • the filter input signal comes from sensor 1, which receives the superposition of multiple echoes that were reflected by closely spaced reflex points.
  • the signal S1 originates from a filter with a short impulse response, while the signal S2 originates from a filter with a longer impulse response.
  • Each of the local maxima of the signal curve S1, marked with black squares, represents the transit time of a reflex point. Thanks to the short
  • each reflex point leads to an independent local maximum in the signal course S1.
  • the signal S2 originates from the filter whose impulse response has been adapted to the length of the emitted acoustic measuring pulse, and whose impulse response is longer than that of the
  • Waveform S1 leading filter was.
  • a comparison shows that in the waveform S2 no longer all reflections lead to an independent maximum, which based on the signal S2 no longer every reflex point can be detected independently.
  • the longer the impulse response of the filter the more the echoes processed in close succession are superimposed by the filter, so that, for example, many small echoes are superimposed by a rough background in the filter, thus producing a disproportionately loud signal at the filter output.
  • FIG. 3 shows the same signal curves already shown in FIG. 2 in a modified form and over a larger measuring range. Also shown is the course of the echo peak, which will have one and the same reference object at the respective distance.
  • the signal values fluctuate the more the signal becomes quieter. This is the result of additive noise.
  • waveform S2 the variations are compared to
  • Signal curve S1 is not so great, since the associated filter suppresses the noise more strongly than the filter red with a shorter impulse response because of its impulse response, which is longer by a factor of 3. Since the achievable measuring range is limited by the signal distance to the noise in the signal, the measuring range of the echo evaluated with a shorter impulse response is smaller than that of the signal evaluated with a longer impulse response.

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

L'invention concerne un dispositif et un procédé pour des capteurs d'environnement utilisant un convertisseur de signal et une unité d'évaluation, des signaux captés depuis l'environnement avec une première longueur de réponse à une impulsion étant filtrés d'après leur temps de propagation à un premier instant pendant un cycle de mesure et des signaux captés avec une deuxième longueur de réponse - plus longue - à une impulsion à un instant ultérieur à l'intérieur du même cycle de mesure.
EP13814931.5A 2013-01-14 2013-12-20 Dispositif et procédé pour des capteurs d'environnement Ceased EP2943806A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013200434.6A DE102013200434A1 (de) 2013-01-14 2013-01-14 Vorrichtung und Verfahren zur Umfeldsensorik
PCT/EP2013/077595 WO2014108300A1 (fr) 2013-01-14 2013-12-20 Dispositif et procédé pour des capteurs d'environnement

Publications (1)

Publication Number Publication Date
EP2943806A1 true EP2943806A1 (fr) 2015-11-18

Family

ID=49886922

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13814931.5A Ceased EP2943806A1 (fr) 2013-01-14 2013-12-20 Dispositif et procédé pour des capteurs d'environnement

Country Status (3)

Country Link
EP (1) EP2943806A1 (fr)
DE (1) DE102013200434A1 (fr)
WO (1) WO2014108300A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE112018000574B3 (de) 2017-05-16 2020-09-24 Elmos Semiconductor Se Verfahren zur Übertragung von Daten über einen Fahrzeugdatenbus von einem Ultraschallsystem zu einer Datenverarbeitungsvorrichtung
WO2019020457A1 (fr) 2017-07-28 2019-01-31 Elmos Semiconductor Aktiengesellschaft Procédé de détection d'au moins un objet situé dans l'environnement d'un véhicule
DE102017219858A1 (de) * 2017-11-08 2019-05-09 Robert Bosch Gmbh Verfahren zum Betreiben eines Magnetfeldsensors und zugehörige Magnetfeldsensoranordnung
DE102019105651B4 (de) 2018-03-16 2023-03-23 Elmos Semiconductor Se Klassifikation von Signalobjekten innerhalb von Ultraschallempfangssignalen und komprimierte Übertragung von Symbolen als Repräsentanten dieser Signalobjekte an eine Rechnereinheit zur Objekterkennung
DE102018106244B3 (de) 2018-03-16 2019-06-27 Elmos Semiconductor Aktiengesellschaft Verfahren zur periodisch fortlaufenden Übertragung von komprimierten Daten eines Ultraschallsensorsystems in einem Fahrzeug
DE102018010261A1 (de) 2018-03-16 2019-09-19 Elmos Semiconductor Aktiengesellschaft Klassifikation von Signalobjekten innerhalb von Ultraschallempfangssignalen und komprimierten Übertragung von Symbolen als Repräsentanten dieser Signalobjekte an eine Rechnereinheit zur Objekterkennung
DE102018010258A1 (de) 2018-03-16 2019-09-19 Elmos Semiconductor Aktiengesellschaft Klassifikation von Signalobjekten innerhalb von Ultraschallempfangssignalen und komprimierten Übertragung von Symbolen als Repräsentanten dieser Signalobjekte an eine Rechnereinheit zur Objekterkennung
DE102018010260A1 (de) 2018-03-16 2019-09-19 Elmos Semiconductor Aktiengesellschaft Klassifikation von Signalobjekten innerhalb von Ultraschallempfangssignalen und komprimierten Übertragung von Symbolen als Repräsentanten dieser Signalobjekte an eine Rechnereinheit zur Objekterkennung
DE102018106251A1 (de) 2018-03-16 2019-09-19 Elmos Semiconductor Aktiengesellschaft Verfahren komprimierten Übertragung von Daten eines Ultraschallsensorsystems durch Nichtübertragung erkannter unwichtiger Signalobjekte auf Basis von mindestens zwei Parametersignalen
DE102019106432A1 (de) 2018-03-16 2019-09-19 Elmos Semiconductor Aktiengesellschaft Verfahren komprimierten Übertragung von Daten eines Ultraschallsensorsystems durch Nichtübertragung erkannter unwichtiger Signalobjekte
DE102018010254A1 (de) 2018-03-16 2019-09-19 Elmos Semiconductor Aktiengesellschaft Klassifikation von Signalobjekten innerhalb von Ultraschallempfangssignalen und komprimierten Übertragung von Symbolen als Repräsentanten dieser Signalobjekte an eine Rechnereinheit zur Objekterkennung
DE102018010255A1 (de) 2018-03-16 2019-09-19 Elmos Semiconductor Aktiengesellschaft Klassifikation von Signalobjekten innerhalb von Ultraschallempfangssignalen und komprimierten Übertragung von Symbolen als Repräsentanten dieser Signalobjekte an eine Rechnereinheit zur Objekterkennung
DE102019009242B3 (de) 2018-03-16 2023-05-11 Elmos Semiconductor Se Sensor mit Ultraschallsignalkompression auf Basis eines Annäherungsverfahrens mittels Signalobjektklassen
DE102018010257A1 (de) 2018-03-16 2019-09-19 Elmos Semiconductor Aktiengesellschaft Klassifikation von Signalobjekten innerhalb von Ultraschallempfangssignalen und komprimierten Übertragung von Symbolen als Repräsentanten dieser Signalobjekte an eine Rechnereinheit zur Objekterkennung
DE102018106247A1 (de) 2018-03-16 2019-09-19 Elmos Semiconductor Aktiengesellschaft Klassifikation von Signalobjekten innerhalb von Ultraschallempfangssignalen und komprimierten Übertragung von Symbolen als Repräsentanten dieser Signalobjekte an eine Rechnereinheit zur Objekterkennung
DE102018222320A1 (de) * 2018-12-19 2020-06-25 Robert Bosch Gmbh Objekterkennungsvorrichtung für Fahrzeuge und Verfahren zur Erkennung eines Objektes für Fahrzeuge
DE102019106204B4 (de) 2019-03-12 2023-04-27 Elmos Semiconductor Se Ultraschallsystem mit zentralisierter Objekterkennung auf Basis von dekomprimierten Ultraschallsignalen mehrerer Sensoren und zugehöriges Kompressionsverfahren

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DE102008041894A1 (de) * 2008-09-09 2010-03-11 Robert Bosch Gmbh Ultraschallsensor und Verfahren zum Betreiben eines Ultraschallsensors

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Also Published As

Publication number Publication date
DE102013200434A1 (de) 2014-07-17
WO2014108300A1 (fr) 2014-07-17

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