WO2021044048A1 - Rechnerische störschallkompensation für ultraschallsensorsysteme - Google Patents
Rechnerische störschallkompensation für ultraschallsensorsysteme Download PDFInfo
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- WO2021044048A1 WO2021044048A1 PCT/EP2020/074905 EP2020074905W WO2021044048A1 WO 2021044048 A1 WO2021044048 A1 WO 2021044048A1 EP 2020074905 W EP2020074905 W EP 2020074905W WO 2021044048 A1 WO2021044048 A1 WO 2021044048A1
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- Prior art keywords
- information
- computational
- ultrasonic sensor
- signal
- noise compensation
- Prior art date
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Classifications
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- 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
- G01S15/50—Systems of measurement, based on relative movement of the target
- G01S15/52—Discriminating between fixed and moving objects or between objects moving at different speeds
- G01S15/523—Discriminating between fixed and moving objects or between objects moving at different speeds for presence detection
- G01S15/526—Discriminating between fixed and moving objects or between objects moving at different speeds for presence detection by comparing echos in different sonar periods
-
- 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
-
- 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
- G01S15/101—Particularities of the measurement of distance
-
- 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
- G01S7/52004—Means for monitoring or calibrating
-
- 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
- G01S7/52004—Means for monitoring or calibrating
- G01S7/52006—Means for monitoring or calibrating with provision for compensating the effects of temperature
-
- 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
- G01S7/5273—Extracting wanted echo signals using digital techniques
-
- 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
- G01S7/537—Counter-measures or counter-counter-measures, e.g. jamming, anti-jamming
-
- 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
-
- 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
- G01S7/52004—Means for monitoring or calibrating
- G01S2007/52009—Means for monitoring or calibrating of sensor obstruction, e.g. dirt- or ice-coating
-
- 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
Definitions
- the present invention relates to a method for computational sound compensation for a concealed or uncovered built-in ultrasonic sensor system, in particular for a vehicle.
- the present invention also relates to a system for computational ultrasound compensation with means for carrying out the steps of the method.
- the present invention also relates to a vehicle with the system for computational ultrasound compensation.
- the present invention relates to a computer program, comprising instructions which, when the computer program is executed by a computer, cause the computer to carry out steps of the method.
- the present invention also relates to a data carrier signal which the computer program transmits.
- the present invention also relates to a computer-readable medium, comprising instructions which, when executed by a computer, cause the computer to carry out steps of the method.
- ultrasonic transducers or ultrasonic sensor systems for monitoring the surroundings in vehicles are usually installed uncovered, that is to say there are openings in the wall material of the vehicle in the area of the ultrasonic transducers.
- the concealed and thus from the outside invisible installation of the ultrasonic transducers or ultrasonic sensor systems is optically preferable, but is currently not prevailing by the majority because the parasitic structure-borne sound amplitudes that arise during an ultrasonic signal transmission process and only slowly decay without further measures in the immediately adjacent vehicle structure, in particular in its Wall material, one make reliable detection of the ultrasonic signals coupled in via the air path in the form of echoes considerably more difficult.
- a concealed ultrasonic sensor system means, for example in a vehicle, that an ultrasonic sensor or several ultrasonic sensors are not visible from the outside.
- Ultrasonic signals emitted by the ultrasonic sensor system penetrate the wall material on which the sensor is arranged. Ultrasonic signals penetrate the wall material twice for ultrasonic detection, namely when sending and receiving the ultrasonic signal through the concealed ultrasonic sensor system. This causes the wall material to vibrate.
- the laid-open specification DE 10 2017 127587 A1 discloses a damping mat made of butyl rubber, which is mixed with fibers in order to increase the damping effect and to obtain the damping effect over a larger temperature range.
- a damping device is known from the laid-open specification DE 10 2015 116442 A1, which has two different damping elements that function at different temperatures.
- the laid-open specification DE 10 2012 106700 A1 discloses a stiffening element that is intended to reduce the vibrations of the wall.
- the invention is therefore based on the object of specifying a method for computational noise compensation for an ultrasound sensor system installed either concealed or uncovered, a system for computational ultrasound compensation, a vehicle, a computer program, a data carrier signal and a computer-readable medium, which overcome the aforementioned disadvantages.
- the object is achieved according to the invention by the features of the independent claims.
- Advantageous refinements of the invention are given in the subclaims.
- a method for computational noise compensation for a built-in ultrasonic sensor system is specified, in particular for a vehicle with a wall material, having the following steps:
- Detecting reference environmental information including noise signal information of a wall material and / or airborne sound signal information, with an ultrasonic sensor of the ultrasonic sensor system;
- Detecting real-time environmental information comprising
- the method for computational noise compensation is preferably a method for computational structure-borne noise compensation.
- the last step of the method according to the invention is preferably carried out in the vehicle.
- a system for computational ultrasound compensation with means for carrying out the steps of the method is also specified.
- the system for computational ultrasound compensation can be part of a driving support system for supporting autonomous or semi-autonomous driving of corresponding autonomous or semi-autonomous vehicles or a driver assistance system for supporting a driver of the vehicle in different driving situations.
- a vehicle with the system for computational ultrasound compensation is specified.
- the vehicle is preferably a driver's ego vehicle.
- a computer program is specified, comprising instructions which, when the computer program is executed by a computer, cause the computer to carry out steps of the method.
- a computer program is a collection of instructions for performing a particular task, designed to solve a particular class of problems.
- a program's instructions are designed to be carried out by a computer, and it requires a computer to be able to run programs in order for it to function.
- a data carrier signal is specified which the computer program transmits.
- a computer-readable medium comprising instructions which, when executed by a computer, cause the computer to carry out steps of the method.
- the basic idea of the present invention is therefore, instead of, for example, mechanical damping of vibrations or interfering noise, in particular structure-borne noise, of a wall material, to take into account and filter out the vibrations in the context of signal processing.
- temperature-dependent changes in the same can also be taken into account.
- This method thus enables reliable detection by the ultrasonic sensor system, wherein the ultrasonic sensor system, for example installed under the wall material, can have a plurality of ultrasonic sensors that can detect simultaneously and permanently in order to achieve a continuously precise detection result.
- the method presented allows a significant reduction in the design effort as well as the material expense, so that a significant reduction in costs and weight can be achieved with a comparable or even increased performance of the concealed ultrasonic detection system.
- This method can also be used to compensate for structure-borne noise in an uncovered ultrasound detection system, with the respective signal generated by the oscillation of the membrane and which can also be interpreted as structure-borne noise being calculated for each measurement.
- the membrane forms the wall material, for example.
- the ultrasonic transducer increases the quality of the detection results from detections at a short distance, for example closer to 10 centimeters.
- pre-stored reference environmental information in particular for noise signal information
- noise signal information is made available.
- These detections can take place, for example, using sound absorbers, for example in an appropriately configured sound studio.
- Ultrasound is sound with frequencies above the human hearing frequency range. It preferably includes frequencies from 16 kHz. Sound from a frequency of around 1 GHz is also referred to as hypersonic. In contrast, frequencies below the frequency range that can be heard by humans are referred to as infrasound.
- Ultrasound propagates as a longitudinal wave in gases and liquids. In solids, the shear stresses that occur also cause the propagation of transverse waves. For reasons of efficiency, the transition from airborne sound to the solid body, or vice versa, can take place in particular with a coupling medium with an adapted acoustic impedance and a certain thickness.
- ultrasound is reflected, absorbed, scattered or passed through, so-called transmission.
- transmission As with other waves, refraction, diffraction and interference also occur, so that the ultrasound system is designed to be very sensitive.
- Air shows an attenuation for ultrasound that increases sharply with frequency.
- ultrasound propagates in liquids with little attenuation.
- the attenuation can also be based on temperature fluctuations and / or changes in humidity in general.
- the first step of the method is therefore the detection of reference environmental information.
- the wall material is an outer wall of the vehicle, for example a body part, but also gorilla glass used in a sunroof.
- Interfering sound signal information is signal information that is added in addition to intended sound detection, possibly in a disruptive manner. It is precisely this signal information that has to be compensated.
- the airborne sound signal information is the ultrasound that is located outside the wall material.
- the reference environment information is then saved. This step can be carried out once or repeated depending on defined conditions. It is essential that, in order to carry out the method, reference environmental information detected in a previous step can be called up at a later point in time.
- real-time environmental information including interference sound signal information, in particular structure-borne sound signal information, of the wall material and / or airborne sound signal information, is carried out with the ultrasonic sensor.
- interference sound signal information in particular structure-borne sound signal information, of the wall material and / or airborne sound signal information
- further real-time information is detected. If there has been a change in the distance of a detected object between the times of the different detections, this is also detected.
- the difference signal is formed between the environmental information from reference environmental information and real-time environmental information with a computing unit.
- a reference measurement in the time domain is thus subtracted from the later real-time measurements.
- Either the reference environmental information can be subtracted from the real-time environmental information or the real-time environmental information can be subtracted from the reference environmental information.
- the calculation algorithms are set uniformly.
- the subsequent steps are carried out according to the state of the art, i.e. as with externally installed ultrasonic sensors.
- a signal is usually used, in the present case the difference signal, for example to check whether threshold values have been exceeded.
- the wall material of the vehicle has a material thickness of at least 0.1 millimeters.
- the wall material of the vehicle has a material thickness of at most 3.0 millimeters inclusive.
- the invention is characterized by smoothing and / or filtering the difference signal. Difference signals prepared for the subsequent computing process enable more reliable or less error-prone detection of the vehicle environment.
- the ultrasonic sensor has a frequency of at least 40 kFIz inclusive up to and including 80 kFIz. It has been found that interfering noise, in particular structure-borne noise, can be well compensated for in this frequency range, so that a reliable or error-free detection of the vehicle environment is made possible.
- the formation of the difference signal between the environmental information takes place on the basis of raw data, an envelope curve, and / or a differently filtered received signal, for example a correlation with a transmitted signal of the ultrasonic sensor.
- Raw data require only reduced computing power and thus accelerate data processing.
- the detection of the reference environmental information is repeated at defined time intervals.
- any detected reference environmental information also include detected objects.
- the detection of the reference environmental information takes place at regular time intervals.
- the defined time intervals are less than one minute.
- Preferred time intervals in order to enable the most reliable and precise detection possible, can in particular be at least 10 milliseconds.
- the detection of the reference environmental information is repeated on an event-based basis. This means that an external factor initiates a detection of the reference environmental information as an event. This reduces the number of calculations.
- the detection of the reference environmental information is repeated on an event-based basis in such a way that a temperature change and / or a change in humidity triggers or triggers repeated detection of the reference environmental information. It has been found that these influences are suitable as events in order to repeatedly carry out a new detection when a defined amount of change in the temperature and / or the humidity is exceeded in such a way that a reliable detection is made possible.
- a signal component of at least one object detected by means of airborne sound signal information in the reference environmental information results in a negative signal in the difference signal, provided that the object has changed its position relative to the vehicle or the respective ultrasonic transducer.
- the negative signal or the object can be detected in particular on the basis of the change in amplitude and / or the change in phase.
- the negative signal is used in its inversion as a positive signal in the real-time environmental information for object tracking. This negative signal can be used to track the object on the basis of the characteristic data of the negative signal as a positive signal with respect to the previously known reference signal.
- the computing unit is an application-specific integrated circuit in the ultrasonic sensor system.
- An application-specific integrated circuit in English application-specific integrated circuit, ASIC, is an electronic circuit that is implemented as an integrated circuit. The function of an ASIC can therefore no longer be changed, but the manufacturing costs are lower with high one-off costs.
- the presented method for computational sound compensation is also used in connection with uncovered ultrasonic transducers in order to enable improved object detection in the vicinity of an ultrasonic transducer by the wall material generated by the oscillation of the membrane formed as a membrane and also as Structure-borne noise interpretable signal is deducted for each measurement.
- the method is a method for computational structure-borne noise compensation and that the interfering noise signal information is structure-borne noise signal information.
- Structure-borne sound signal information is a form of interfering sound signal information, structure-borne sound being used as structure-borne sound signal information, which is detected by the ultrasonic sensor, this corresponding to vibrations of the wall material.
- Such an application is particularly suitable for concealed ultrasonic transducers, for example on vehicles.
- the presented method for computational sound compensation is used in connection with concealed and / or uncovered ultrasonic transducers in order to selectively to hide individual or several undesired airborne sound signals of the environment, for example starting from a trailer coupling or a bicycle rack, to detect even very small changes in a possibly complex echo landscape of the environment, for example to detect objects underneath the vehicle by means of ultrasonic transducers located in the area of the vehicle underbody, and / or in order to detect changes in the structure-borne noise pattern, for example due to temperature changes, soiling, deformation and / or damage. Damage can, for example, be a
- At least one ultrasonic transducer can be attached to the glass pane and measure its structure-borne noise. If the pane of glass breaks, the detected structure-borne noise signal changes, so that it can be concluded that the glass has been damaged. Thus, a background noise signal that remains the same as the initial background noise signal is considered to be a signal for a non-broken glass pane.
- FIG. 1 shows a schematic view of an ultrasonic sensor system according to a preferred embodiment of the invention
- FIG. 2 shows a flow diagram of a method for computational noise compensation for a concealed ultrasonic sensor system
- FIG. 3 shows exemplary time domain signals of the method for computational noise compensation for built-in ultrasonic sensor systems.
- FIG. 1 shows a concealed ultrasonic sensor system 1 with an ultrasonic sensor 5, which is arranged on a wall material 2 of a vehicle To detect interfering sound signal information 3, in particular structure-borne sound signal information, and airborne sound signal information 4.
- structure-borne sound signal information is assumed in the case of the interfering sound signal information 3 in the context of specific, preferred exemplary embodiments.
- the invention is not limited to concealed ultrasonic sensors 5, although these are used as an example in the exemplary embodiments to solve a specific problem.
- Installed concealed means that the ultrasonic sensor system 1 has the transmitter or receiver arranged inside the vehicle and not visually visible from the outside.
- the structure-borne sound signal information and the airborne sound signal information 4 are processed in a computing unit 6.
- FIG. 1 there is no object that could be detected. However, such an object is present in the case of the ultrasound images according to FIGS. 3a, 3c and 3d.
- FIG. 2 schematically shows, in a flow chart, a method for computational interference or structure-borne noise compensation for the concealed ultrasonic sensor system 1, in particular for a vehicle with the wall material 2.
- the method has at least the following steps:
- Detecting reference environmental information 100 including interference or structure-borne sound signal information 3 of a wall material 2 and / or airborne sound signal information 4, with an ultrasonic sensor 5 of the ultrasonic sensor system 1;
- the computing unit 6 is an application-specific integrated circuit in the ultrasonic sensor system 1.
- FIG. 3a shows a transmission and reception signal in the case of an uncovered ultrasonic sensor system 1 or an uncovered ultrasonic sensor 5, as is known from the prior art.
- an object is arranged in the detection area, from which an airborne sound signal information item 4 is shown. Since the ultrasonic sensor 5 is not covered, it does not detect any interference or structure-borne sound signal information 3.
- FIG. 3b shows a transmission and reception signal in the case of a concealed ultrasonic sensor system 1 or a concealed ultrasonic sensor 5 according to a preferred embodiment of the invention.
- No object is arranged in the detection area, so that the airborne sound signal information 4 does not generate a signal deflection. Since the ultrasonic sensor 5 is covered, it detects interference or structure-borne noise signal information 3. As a result, reference environmental information 100 is detected without an object.
- FIG. 3c shows a transmission and reception signal in the case of a concealed ultrasonic sensor system 1 or a concealed ultrasonic sensor 5 according to a preferred embodiment of the invention.
- an object is arranged in the detection area, so that the airborne sound signal information 4 generates a signal deflection. Since the ultrasonic sensor 5 is covered, it also detects interference or structure-borne noise signal information 3. However, these are superimposed so that the object cannot be identified from this detection alone. In other words, the signal from the object is covered by the signal from the structure-borne noise or the wall material.
- FIG. 3d shows, in a schematically simplified manner, the difference signal between the environmental information 400 from reference environmental information and real-time environmental information.
- the wall material 2 of the vehicle has a material thickness of at least 0.1 millimeters. According to one embodiment, it is also preferably provided that the wall material 2 of the vehicle has a material thickness of at most 3.0 millimeters inclusive.
- the structure-borne noise in this area is shown by way of example in FIG. 3b.
- the difference signal is smoothed and / or filtered.
- the ultrasonic sensor 5 has a frequency of at least 40 kHz up to and including 80 kHz. Ultrasonic detections carried out with such a frequency result in sound signals as shown by way of example in FIGS. 3a to 3d.
- the formation of the difference signal between the environmental information 400 takes place on the basis of raw data, an envelope curve, and / or a differently filtered received signal, for example a correlation with a transmission signal of the ultrasonic sensor 5.
- an envelope curve is shown symbolically as an example. This means that the ultrasonic signal is represented and processed by the envelope curve.
- the detection of the reference environmental information 100 is repeated at defined time intervals.
- the defined time intervals are less than one minute, and in particular are at least 10 milliseconds.
- the detection of the reference environmental information 100 is repeated on an event-based basis.
- the detection of the reference environmental information 100 is repeated on an event-based basis in such a way that a temperature change and / or a change in humidity triggers or triggers repeated detection of the reference environmental information 100.
- a signal portion of at least one object detected by means of airborne sound signal information 4 in the reference environmental information results in a negative signal in the difference signal, provided that the object has changed its position relative to the vehicle or the respective ultrasonic transducer.
- the reverse of the negative signal is used as a positive signal in the real-time environmental information for object tracking.
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- Remote Sensing (AREA)
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- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
Description
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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CN202080066465.0A CN114467039A (zh) | 2019-09-05 | 2020-09-07 | 超声波传感器系统的计算背景噪声补偿 |
JP2022514855A JP7445748B2 (ja) | 2019-09-05 | 2020-09-07 | 超音波センサシステムのためのコンピュータによるノイズ補償 |
KR1020227011080A KR102718517B1 (ko) | 2019-09-05 | 2020-09-07 | 초음파 센서 시스템을 위한 계산적 잡음 보상 |
US17/639,412 US12038504B2 (en) | 2019-09-05 | 2020-09-07 | Computational noise compensation for ultrasonic sensor systems |
EP20768330.1A EP4025933A1 (de) | 2019-09-05 | 2020-09-07 | Rechnerische störschallkompensation für ultraschallsensorsysteme |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102019123822.6A DE102019123822A1 (de) | 2019-09-05 | 2019-09-05 | Rechnerische Störschallkompensation für Ultraschallsensorsysteme |
DE102019123822.6 | 2019-09-05 |
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WO2021044048A1 true WO2021044048A1 (de) | 2021-03-11 |
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PCT/EP2020/074905 WO2021044048A1 (de) | 2019-09-05 | 2020-09-07 | Rechnerische störschallkompensation für ultraschallsensorsysteme |
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US (1) | US12038504B2 (de) |
EP (1) | EP4025933A1 (de) |
JP (1) | JP7445748B2 (de) |
CN (1) | CN114467039A (de) |
DE (1) | DE102019123822A1 (de) |
WO (1) | WO2021044048A1 (de) |
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DE102021132027A1 (de) | 2021-12-06 | 2023-06-07 | Valeo Schalter Und Sensoren Gmbh | Verfahren zur rechnerischen störschallkompensation, ultraschallsensorsystem und kraftfahrzeug |
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DE102015116442A1 (de) | 2015-09-29 | 2017-03-30 | Valeo Schalter Und Sensoren Gmbh | Dämpfungseinrichtung für ein Außenteil, Anordnung mit einer Dämpfungseinrichtung sowie Kraftfahrzeug |
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KR20220058930A (ko) | 2022-05-10 |
EP4025933A1 (de) | 2022-07-13 |
US20220334249A1 (en) | 2022-10-20 |
JP2022547115A (ja) | 2022-11-10 |
DE102019123822A1 (de) | 2021-03-11 |
JP7445748B2 (ja) | 2024-03-07 |
CN114467039A (zh) | 2022-05-10 |
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