WO2022002712A1 - Method for addressing sensors of an assistance system of a vehicle - Google Patents

Method for addressing sensors of an assistance system of a vehicle Download PDF

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Publication number
WO2022002712A1
WO2022002712A1 PCT/EP2021/067095 EP2021067095W WO2022002712A1 WO 2022002712 A1 WO2022002712 A1 WO 2022002712A1 EP 2021067095 W EP2021067095 W EP 2021067095W WO 2022002712 A1 WO2022002712 A1 WO 2022002712A1
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WO
WIPO (PCT)
Prior art keywords
sensor
sensors
measuring
assistance system
control device
Prior art date
Application number
PCT/EP2021/067095
Other languages
German (de)
French (fr)
Inventor
Dirk Schmid
Csaba Juhasz
Albrecht Klotz
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
Priority to CN202180053553.1A priority Critical patent/CN116018792A/en
Publication of WO2022002712A1 publication Critical patent/WO2022002712A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5038—Address allocation for local use, e.g. in LAN or USB networks, or in a controller area network [CAN]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2101/00—Indexing scheme associated with group H04L61/00
    • H04L2101/60—Types of network addresses
    • H04L2101/69—Types of network addresses using geographic information, e.g. room number

Definitions

  • the present invention relates to a method for addressing sensors of an assistance system of a vehicle and an arrangement for addressing sensors of an assistance system.
  • Assistance systems for vehicles are known, such as parking assistance systems, for example, which comprise a large number of usually identical ultrasonic sensors. Before the assistance system is started up for the first time, the sensors must be correctly addressed in order to be able to assign the sensor data of each sensor to a correct physical position relative to the other sensors. This usually requires complex hardware and / or a complex calibration process.
  • the method according to the invention with the features of claim 1 is characterized in that it is possible to address sensors of an assistance system in a particularly simple manner and with simple and inexpensive hardware.
  • This is achieved by a method for addressing sensors of an assistance system of a vehicle, the assistance system having a control device and a plurality of sensors.
  • the sensors are connected to the control device via an in particular common data bus.
  • the sensors are preferably designed identically.
  • Each sensor has an individual sensor identifier, which is, for example, a serial number.
  • the method comprises the following steps, each step being carried out for each sensor:
  • the position of the actuated sensor is determined by means of a measuring device which has one measuring sensor for each sensor.
  • the measuring sensors of the measuring device are arranged at predefined positions relative to one another.
  • the senor is first logically addressed before the sensor is geometrically addressed.
  • the identification of the sensor ID and the assignment of the logical address to the sensor based on the sensor ID can be viewed as logical addressing.
  • the control device preferably carries out this logical addressing. By means of this logical addressing, the control device can distinguish the sensors from one another and thus operate each sensor separately.
  • the geometric addressing comprises the steps of actuating exactly one sensor, in particular while all other sensors are not actuated, determining the position of the actuated sensor, and assigning the geometric address to the actuated sensor based on the determined position.
  • the relative positioning of the actuated sensor to the actuated sensors can be determined by the known, predefined arrangement of the measuring sensors.
  • the method is carried out until each of the sensors has both a logical address and a geometric address.
  • the control device can operate each sensor separately and also from assign each sensor recorded sensor data to a corresponding location of the sensor, so that an optimal function and accuracy of the assistance system can be ensured during operation.
  • the measuring device with the measuring sensors is preferably provided as a separate component, independent of the assistance system.
  • all sensors can be addressed by means of the measuring device, for example during manufacture and assembly of the assistance system, with the assistance system subsequently being able to be provided on its own without additional hardware.
  • the assistance system can thus be made available with a particularly simple structure and few components.
  • the above-described steps of the method can preferably be carried out immediately one after the other, so that exactly one sensor is always fully addressed before the next sensor is addressed.
  • the steps for different sensors can also be interchanged.
  • the logical addressing that is to say the identification of the sensor identifier and the assignment of a logical address, can first be carried out for all sensors before the further steps of the geometric addressing are carried out sequentially for all sensors.
  • the sensors are preferably ultrasonic sensors.
  • the assistance system is therefore, in particular, an ultrasound system that can be used for distance detection.
  • the assistance system can be used to detect the distance for a parking pilot system or another driver assistance system.
  • the ultrasonic sensors are preferably fastened at fixed positions in a trim part of the vehicle. In particular, they are Ultrasonic sensors are fastened in a bumper of the vehicle, with preferably at least 2 and a maximum of 12 ultrasonic sensors being provided per bumper.
  • the method further comprises the step of: storing the geometric address in a non-volatile memory of the sensor.
  • the geometric address can always be called up even without a power supply or after the connection between sensors and control device has been disconnected and after the connection has been re-established, in particular without having to carry out the method again.
  • the measuring sensor preferably detects a current signal by means of which the sensor is actuated by the control device.
  • each measuring sensor preferably has a current measuring unit which can be connected in particular to the corresponding sensor and / or a sensor line which connects the sensor to the data bus and / or the power supply. It can thus be reliably determined in a particularly simple and inexpensive manner which of the sensors is actuated by the control device.
  • the measuring sensor further preferably detects a magnetic field generated by the sensor.
  • each measuring sensor preferably has an induction coil, which in particular is arranged directly adjacent to the sensor. This provides a further inexpensive and simple possibility by means of which it can be reliably determined which of the sensors is actuated in order to determine the position of the actuated sensor in order to be able to assign the geometric address to it.
  • the measuring sensor preferably detects a sound signal generated by the sensor.
  • Each measuring sensor preferably has a microphone for this purpose.
  • the measuring sensors can be placed in front of each sensor in the direction of sound propagation, in which the ultrasonic sensors emit the ultrasonic signals. This makes it possible to provide a further simple and inexpensive possibility for precise identification of the sensor actuated by the control device.
  • the invention also leads to an arrangement for addressing sensors of an assistance system of a vehicle.
  • the arrangement comprises the assistance system and a measuring device.
  • the assistance system has a large number of sensors and a control device.
  • the sensors are connected to the control device via an in particular common data bus.
  • the measuring device has one measuring sensor for each sensor, the measuring sensors being arranged at predefined positions relative to one another.
  • the arrangement is set up to carry out the method described above.
  • the arrangement thus allows a particularly simple and inexpensive way of addressing the sensors of the assistance system. In particular, there is no need for complex hardware, such as separate cabling for each sensor directly with the control
  • the sensors are preferably ultrasonic sensors.
  • the assistance system is therefore, in particular, an ultrasound system that can be used for distance detection.
  • the assistance system can be used to detect the distance for a parking pilot system or another driver assistance system.
  • Each measuring sensor preferably has a current measuring unit.
  • Each current measuring unit can be connected to a sensor branch which connects exactly one sensor to the data bus and / or the power supply.
  • the current measuring unit can be designed as a current measuring terminal, which can be clamped onto the sensor branch for a particularly simple current measurement.
  • the current measuring terminal preferably measures the current inductively without a galvanic connection to the measurement object.
  • Each measuring sensor particularly preferably has an induction coil which is set up in particular to detect a magnetic field generated by the sensor.
  • Each instruction coil can preferably be arranged directly on exactly one sensor. That is to say, the induction coil can in particular be arranged directly adjacent to the sensor in order to generate a magnetic field caused by the actuation of the sensor in its vicinity capture. A further simple and inexpensive way of recognizing which of the sensors is being actuated can thus be provided.
  • Each measuring sensor preferably has a microphone.
  • An ultrasonic signal emitted by the sensor can thus be detected by means of the microphone in order to identify which of the sensors is being actuated.
  • the microphones for this purpose can be placed in front of each sensor in the direction of sound propagation, in which the ultrasonic sensors emit the ultrasonic signals. This makes it possible to provide a further simple and inexpensive possibility for precise identification of the sensor actuated by the control device.
  • Each measuring sensor preferably has a shielding device which partially surrounds the microphone.
  • the shielding device is aligned in such a way that the shielding device shields interfering noises, for example from neighboring sensors, and only allows sound signals from that sensor on which the microphone is arranged to propagate to the corresponding microphone.
  • it can be determined in a particularly reliable manner and with a particularly low probability of error which sensor of the large number of sensors is actuated.
  • the following method is also possible: When a sensor is activated, the signals from all measurement microphones are recorded simultaneously and, by comparing the signals, it is determined which microphone received the sound signal first and / or with the highest amplitude.
  • the assistance system preferably further comprises an interface which is set up to releasably connect the control device and the data bus to one another.
  • the control device can, for example, be arranged independently of the data bus and of the sensors, whereby particularly simple handling and high flexibility of the assistance system can be made possible.
  • a control device that is stationary on the vehicle can be used as the control device, wherein the data bus with the sensors can be mounted as an attachment on the vehicle and then connected to the control device.
  • the arrangement particularly preferably further comprises a trim part of the vehicle.
  • the assistance system is arranged in or on the trim part of the vehicle.
  • the sensors are fastened in fixed positions relative to one another in or on the cladding part.
  • the trim part can be a bumper of the vehicle.
  • the assistance system and the measuring device are preferably designed as separate components.
  • the addressing described offers the advantage that the sensors of the assistance system can be assigned a unique logical and geometric address with the aid of the measuring device, after which addressing the measuring device can preferably be removed and the assistance system can be handled separately.
  • Figure 1 is a simplified schematic view of an arrangement for
  • FIG. 2 shows a simplified schematic view of an arrangement for addressing sensors of an assistance system of a vehicle according to a second exemplary embodiment of the invention
  • FIG. 3 shows a simplified schematic view of an arrangement for addressing sensors of an assistance system of a vehicle according to a third exemplary embodiment of the invention.
  • FIG. 1 shows a simplified schematic view of an arrangement 1 for addressing sensors 2 of an assistance system 20 of a vehicle according to a first exemplary embodiment of the invention.
  • the arrangement 1 comprises the assistance system 20 and a measuring device 40.
  • the assistance system 20 is a driver assistance system 20 in the form of a parking assistant.
  • the assistance system 20 comprises a large number of sensors 2, which are ultrasonic sensors, in order to enable objects in the immediate vicinity to be recognized by transmitting and receiving ultrasonic signals.
  • the sensors 2 are connected to one another via a common data bus 25.
  • the sensors 2 are preferably supplied with power via the data bus 25, but a separate power supply line can also be present, which is laid parallel to the data bus 25 and branches off to the sensors 2 as it is.
  • a separate power supply line may be part of the sensor branch 21
  • the assistance system 20 also includes a control device 3 and an interface 5.
  • the interface is designed, for example, as a plug and enables the control device 3 and the data bus 25 to be detachably connected to one another.
  • the control device 3 is set up to control the sensors 2 and to receive data from the sensors 2.
  • the arrangement 1 comprises a trim part 100 of the vehicle, in which the sensors are arranged at fixed positions.
  • the trim part 100 is, for example, a bumper of the vehicle.
  • the sensors 2 are arranged at fixed positions in the trim part 100. Furthermore, all of the sensors 2 are identical, that is, they are constructed identically, with each sensor 2 having an individual sensor identifier, for example an individual serial number. For the optimal functioning of the assistance system 20, it is necessary that a distinction between the sensors 2 and an assignment of the respective position of each sensor 2 on the trim part 100 is known. For this purpose, after the sensors 2 have been installed in the cladding part 100, each sensor 2 must be addressed. In order to be able to undertake correct addressing of the sensors 2 in a simple manner, the method described below is provided. The method steps are described using exactly one sensor 2 as an example.
  • the sensor identification of the sensor 2 is identified by means of the control device 3.
  • the control device 3 then assigns the sensor 2 a logical address based on the sensor identification. This is also known as logical addressing. On the basis of the logical address, the control device 3 can control each of the sensors 2 separately and differentiate between them.
  • the sensor 2 is actuated, with none of the other sensors 2 being actuated.
  • the sensor 2 is actuated by the control device 3 in the same way as in normal operation, that is to say in such a way that the sensor 2 emits an ultrasonic signal.
  • a position of this actuated sensor 2 is determined relative to the further sensors 2.
  • the position of the actuated sensor 2 is determined by means of the measuring device 40.
  • the measuring device 40 has one measuring sensor 4 for each sensor 2.
  • Each measuring sensor 4 has a current measuring unit 4a in the form of a current measuring terminal, which is each connected to the corresponding sensor branch 21 of the sensor 2.
  • By actuating exactly one sensor 2 there is a current flow in exactly one of the sensor branches 21.
  • the measuring device 40 is designed in such a way that the measuring sensors 4 are arranged at predefined positions relative to one another. That is, the relative arrangement of the measuring sensors 4 is known. Thus, the Identify which sensor 2 of the plurality of sensors 2 is actuated, by means of the measuring device 40 the position of the actuated sensor 2 relative to the further sensors 2 can be determined.
  • the control device 3 and the measuring device 40 can be detachably connected to one another, so that the measuring device 40 can pass on the information about the position of the actuated sensor 2 to the control device 3.
  • a geometric address is assigned to the sensor 2 based on the determined position as a further step. This geometric address is stored in a non-volatile memory of the sensor 2 so that access to the geometric address is possible at any time.
  • the measuring device 40 can be separated from the assistance system 20, so that the trim part 100 with the assistance system 20 can later be mounted on the vehicle, for example, and is immediately available for use.
  • the control device 3 can also be separated from the data bus 25, with access to the sensors 2, which are still correctly addressed, also being possible in the event of a subsequent reconnection.
  • different control devices 3 can also be connected to the data bus 25.
  • FIG. 2 shows a simplified schematic view of an arrangement 1 for addressing sensors 2 of an assistance system 20 of a vehicle according to a second exemplary embodiment of the invention.
  • the second exemplary embodiment essentially corresponds to the first exemplary embodiment in FIG. 1 with the difference being an alternative determination of the actuated sensor 2.
  • the measuring sensors 4 of the measuring device 40 are each designed as induction coils 4b.
  • the induction coils 4b are set up to detect a magnetic field caused by the actuation of the sensor 2 in the immediate vicinity of the sensor 2.
  • the actuation of the sensor 2 is thus recognized in response to a recognized magnetic field on one of the induction coils 4b.
  • the induction coils 4b are in this case directly on a rear side of each sensor 2 arranged while the procedure is being carried out. This offers a further simple and inexpensive option for fast and unambiguous addressing of the sensors 2 of the assistance system 20.
  • FIG. 3 shows a simplified schematic view of an arrangement 1 for addressing sensors 2 of an assistance system 20 of a vehicle according to a third exemplary embodiment of the invention.
  • the third embodiment essentially corresponds to the first embodiment of FIG. 1 with the difference of a further alternative determination of the actuated sensor 2.
  • the measuring sensors 4 of the measuring device 40 are each designed as microphones 4c.
  • the microphones 4c are set up to record a sound signal which the sensor 2 generates when it is actuated. The actuation of the sensor 2 is thus recognized in response to a recognized sound signal at one of the microphones 4c.
  • the microphones 4c are placed in front of each sensor 2 so that the sound radiation from the sensor 2 is directed directly at the corresponding microphone 4c.
  • Each measuring sensor 4 additionally has a shielding device 4d which partially surrounds the corresponding microphone 4c and is open in the direction of the sensor 2. In this way, the shielding device 4d prevents the microphones 4c from being able to pick up interfering noises, for example from neighboring sensors 2, as a result of which the probability of errors when addressing the sensors 2 is reduced.
  • a further simple and inexpensive possibility is thus provided in order to be able to address the sensors 2 of the assistance system 20 quickly and precisely.
  • the screening of the microphones 4c can be dispensed with if additional features such as the time of the sound signal and / or the amplitude are recorded during the evaluation of the microphone signals and these features of all microphones 4c are compared with one another. The earliest point in time of the received sound signal or the greatest amplitude characterizes the location of the sound emission.
  • a Measuring device 40 which can determine the position of the actuated sensor 2 based on the current measurement and / or the magnetic field measurement and / or the sound measurement. That is, the measuring sensors 4 of such a measuring device 40 can have both current measuring units 4a and induction coils 4b and / or microphones 4c.

Abstract

The invention relates to a method for addressing sensors (2) of an assistance system (20) of a vehicle, the assistance system (20) comprising a control device (3) and a plurality of sensors (2), the sensors (2) being connected to the control device (3) by means of a data bus (25), and each sensor (2) having an individual sensor identifier. The method comprises the following steps for each sensor (2): - identifying the sensor identifier of the sensor (2); - assigning a logical address to the sensor (2) on the basis of the sensor identifier; - actuating the sensor (2); - determining a position of the actuated sensor (2) relative to the other sensors (2); and - assigning a geometric address to the sensor (2) on the basis of the determined position. The position of the actuated sensor (2) is determined by means of a measuring device (40), which has one measuring sensor (4) per sensor (2). The measuring sensors (4) are disposed in predefined positions relative to each other.

Description

Beschreibung description
Titel title
Verfahren zur Adressierung von Sensoren eines Assistenzsystems einesMethod for addressing sensors of an assistance system of a
Fahrzeugs Vehicle
Stand der Technik State of the art
Die vorliegende Erfindung betrifft ein Verfahren zur Adressierung von Sensoren eines Assistenzsystems eines Fahrzeugs sowie eine Anordnung zum Adressieren von Sensoren eines Assistenzsystems. The present invention relates to a method for addressing sensors of an assistance system of a vehicle and an arrangement for addressing sensors of an assistance system.
Bekannt sind Assistenzsysteme von Fahrzeugen, wie beispielsweise Einparkassistenz-Systeme, welche eine Vielzahl an üblicherweise identischen Ultraschallsensoren umfassen. Vor einer Erstinbetriebnahme des Assistenzsystems ist eine korrekte Adressierung der Sensoren notwendig, um die Sensordaten jedes Sensors einer korrekten physikalischen Position relativ zu den anderen Sensoren zuordnen zu können. Hierfür ist üblicherweise eine aufwändige Hardware und/oder ein komplexer Kalibrierungsprozess erforderlich. Assistance systems for vehicles are known, such as parking assistance systems, for example, which comprise a large number of usually identical ultrasonic sensors. Before the assistance system is started up for the first time, the sensors must be correctly addressed in order to be able to assign the sensor data of each sensor to a correct physical position relative to the other sensors. This usually requires complex hardware and / or a complex calibration process.
Offenbarung der Erfindung Disclosure of the invention
Das erfindungsgemäße Verfahren mit den Merkmalen des Anspruchs 1 zeichnet sich demgegenüber dadurch aus, dass auf besonders einfache Art und Weise und mit einfacher und kostengünstiger Hardware eine Adressierung von Sensoren eines Assistenzsystems möglich ist. Dies wird erreicht durch ein Verfahren zur Adressierung von Sensoren eines Assistenzsystems eines Fahrzeugs, wobei das Assistenzsystem eine Steuervorrichtung und eine Vielzahl an Sensoren aufweist. Die Sensoren sind dabei über einen, insbesondere gemeinsamen, Datenbus mit der Steuervorrichtung verbunden. Die Sensoren sind vorzugsweise identisch ausgebildet. Jeder Sensor weist eine individuelle Sensorkennung auf, welche beispielsweise eine Seriennummer ist. Das Verfahren umfasst dabei die folgenden Schritte, wobei jeder Schritt für jeden Sensor ausgeführt wird: In contrast, the method according to the invention with the features of claim 1 is characterized in that it is possible to address sensors of an assistance system in a particularly simple manner and with simple and inexpensive hardware. This is achieved by a method for addressing sensors of an assistance system of a vehicle, the assistance system having a control device and a plurality of sensors. The sensors are connected to the control device via an in particular common data bus. The sensors are preferably designed identically. Each sensor has an individual sensor identifier, which is, for example, a serial number. The The method comprises the following steps, each step being carried out for each sensor:
- Identifizieren der Sensorkennung des Sensors, - Identifying the sensor ID of the sensor,
- Zuweisen einer logischen Adresse an den Sensor basierend auf der Sensorkennung, - Assigning a logical address to the sensor based on the sensor identification,
- Betätigen des Sensors, - actuation of the sensor,
- Ermitteln einer Position des betätigten Sensors relativ zu den weiteren Sensoren, und - Determining a position of the actuated sensor relative to the further sensors, and
- Zuweisen einer geometrischen Adresse an den Sensor basierend auf der ermittelten Position. - Assigning a geometric address to the sensor based on the determined position.
Das Ermitteln der Position des betätigten Sensors erfolgt dabei mittels einer Messvorrichtung, welche pro Sensor einen Messsensor aufweist. Die Messsensoren der Messvorrichtung sind dabei an vordefinierten Positionen relativ zueinander angeordnet. The position of the actuated sensor is determined by means of a measuring device which has one measuring sensor for each sensor. The measuring sensors of the measuring device are arranged at predefined positions relative to one another.
Mit anderen Worten erfolgt zunächst eine logische Adressierung des Sensors, bevor eine geometrische Adressierung des Sensors durchgeführt wird. Als logische Adressierung kann dabei das Identifizieren der Sensorkennung sowie das Zuweisen der logischen Adresse an den Sensor basierend auf der Sensorkennung angesehen werden. Vorzugsweise führt die Steuervorrichtung diese logische Adressierung durch. Mittels dieser logischen Adressierung kann die Steuervorrichtung die Sensoren voneinander unterscheiden und somit jeden Sensor separat betätigen. In other words, the sensor is first logically addressed before the sensor is geometrically addressed. The identification of the sensor ID and the assignment of the logical address to the sensor based on the sensor ID can be viewed as logical addressing. The control device preferably carries out this logical addressing. By means of this logical addressing, the control device can distinguish the sensors from one another and thus operate each sensor separately.
Die geometrische Adressierung umfasst die Schritte Betätigen von genau einem Sensor, insbesondere während alle anderen Sensoren nicht betätigt werden, Ermitteln der Position des betätigten Sensors, und Zuweisen der geometrischen Adresse an den betätigten Sensor basierend auf der ermittelten Position angesehen. Die relative Positionierung des betätigten Sensors zu den betätigten Sensoren kann dabei durch die bekannte vordefinierte Anordnung der Messsensoren ermittelt werden. The geometric addressing comprises the steps of actuating exactly one sensor, in particular while all other sensors are not actuated, determining the position of the actuated sensor, and assigning the geometric address to the actuated sensor based on the determined position. The relative positioning of the actuated sensor to the actuated sensors can be determined by the known, predefined arrangement of the measuring sensors.
Das Verfahren wird insbesondere so oft ausgeführt, bis jeder der Sensoren sowohl eine logische Adresse als auch eine geometrische Adresse aufweist. Dadurch kann die Steuervorrichtung nach der vollständigen Adressierung aller Sensoren des Assistenzsystems jeden Sensor separat betätigen sowie auch von jedem Sensor erfasste Sensordaten genau einem entsprechenden Ort des Sensors zuordnen, sodass eine optimale Funktion und Genauigkeit des Assistenzsystems im Betrieb sichergestellt werden kann. In particular, the method is carried out until each of the sensors has both a logical address and a geometric address. As a result, after all the sensors of the assistance system have been fully addressed, the control device can operate each sensor separately and also from assign each sensor recorded sensor data to a corresponding location of the sensor, so that an optimal function and accuracy of the assistance system can be ensured during operation.
Durch die Verbindung der Sensoren mit der Steuervorrichtung über einen Datenbus kann somit bei besonders geringem Hardwareaufwand, insbesondere ohne dass eine Verbindung jedes Sensors mit der Steuervorrichtung über eine separate Leitung notwendig ist, mit der Steuervorrichtung kommunizieren. By connecting the sensors to the control device via a data bus, communication with the control device is thus possible with particularly little hardware expenditure, in particular without the need to connect each sensor to the control device via a separate line.
Die Messvorrichtung mit den Messsensoren ist vorzugsweise als separates Bauteil, unabhängig vom Assistenzsystem, vorgesehen. Dadurch kann die Adressierung aller Sensoren mittels der Messvorrichtung beispielsweise bei Herstellung und Zusammenbau des Assistenzsystems vorgenommen werden, wobei im Anschluss daran das Assistenzsystem alleine bereitgestellt werden kann ohne zusätzliche Hardware. Somit kann das Assistenzsystem mit besonders einfachem Aufbau und wenigen Bauteilen zur Verfügung gestellt werden. The measuring device with the measuring sensors is preferably provided as a separate component, independent of the assistance system. As a result, all sensors can be addressed by means of the measuring device, for example during manufacture and assembly of the assistance system, with the assistance system subsequently being able to be provided on its own without additional hardware. The assistance system can thus be made available with a particularly simple structure and few components.
Vorzugsweise können die oben beschriebenen Schritte des Verfahrens unmittelbar nacheinander ausgeführt werden, sodass stets genau ein Sensor vollständig adressiert wird bevor der nächste Sensor adressiert wird. Alternativ können die Schritte für verschiedene Sensoren auch untereinander vertauscht werden. Beispielsweise kann die logische Adressierung, also das Identifizieren der Sensorkennung und das Zuweisen einer logischen Adresse, zunächst für alle Sensoren durchgeführt werden, bevor die weiteren Schritte der geometrischen Adressierung sequenziell für alle Sensoren durchgeführt werden. The above-described steps of the method can preferably be carried out immediately one after the other, so that exactly one sensor is always fully addressed before the next sensor is addressed. Alternatively, the steps for different sensors can also be interchanged. For example, the logical addressing, that is to say the identification of the sensor identifier and the assignment of a logical address, can first be carried out for all sensors before the further steps of the geometric addressing are carried out sequentially for all sensors.
Die Unteransprüche haben bevorzugte Weiterbildungen der Erfindung zum Inhalt. The subclaims contain preferred developments of the invention.
Bevorzugt sind die Sensoren Ultraschallsensoren. Das Assistenzsystem ist somit insbesondere ein Ultraschall-System, welches zur Abstandserfassung verwendet werden kann. Beispielsweise kann das Assistenzsystem zur Abstandserfassung für ein Parkpilotsystem oder ein anderes Fahrerassistenzsystem dienen. Vorzugsweise sind die Ultraschallsensoren an festen Positionen in einem Verkleidungsteil des Fahrzeugs befestigt. Insbesondere sind die Ultraschallsensoren dabei in einer Stoßstange des Fahrzeugs befestigt, wobei pro Stoßstange bevorzugt mindestens 2 und maximal 12 Ultraschallsensoren vorgesehen sind. The sensors are preferably ultrasonic sensors. The assistance system is therefore, in particular, an ultrasound system that can be used for distance detection. For example, the assistance system can be used to detect the distance for a parking pilot system or another driver assistance system. The ultrasonic sensors are preferably fastened at fixed positions in a trim part of the vehicle. In particular, they are Ultrasonic sensors are fastened in a bumper of the vehicle, with preferably at least 2 and a maximum of 12 ultrasonic sensors being provided per bumper.
Besonders bevorzugt umfasst das Verfahren ferner den Schritt: Speichern der geometrischen Adresse in einen nicht-flüchtigen Speicher des Sensors. Dadurch ist beispielsweise auch ohne Energieversorgung oder nach einem Trennen der Verbindung von Sensoren und Steuervorrichtung und nach erneutem Wiederherstellen der Verbindung ein Abrufen der geometrischen Adresse stets möglich, insbesondere ohne dass eine erneute Durchführung des Verfahrens erforderlich ist. Particularly preferably, the method further comprises the step of: storing the geometric address in a non-volatile memory of the sensor. As a result, for example, the geometric address can always be called up even without a power supply or after the connection between sensors and control device has been disconnected and after the connection has been re-established, in particular without having to carry out the method again.
Vorzugsweise erfasst der Messsensor ein Stromsignal, mittels welchem der Sensor von der Steuervorrichtung betätigt wird. Bevorzugt weist jeder Messsensor hierfür eine Strommesseinheit auf, welche insbesondere mit dem entsprechenden Sensor und/oder einer Sensorleitung, welche den Sensor mit dem Datenbus und/oder der Stromversorgung verbindet, verbindbar ist. Somit kann auf besonders einfache und kostengünstige Weise zuverlässig ermittelt werden, welcher der Sensoren von der Steuervorrichtung betätigt wird. The measuring sensor preferably detects a current signal by means of which the sensor is actuated by the control device. For this purpose, each measuring sensor preferably has a current measuring unit which can be connected in particular to the corresponding sensor and / or a sensor line which connects the sensor to the data bus and / or the power supply. It can thus be reliably determined in a particularly simple and inexpensive manner which of the sensors is actuated by the control device.
Weiter bevorzugt erfasst der Messsensor ein vom Sensor erzeugtes Magnetfeld. Bevorzugt weist jeder Messsensor hierfür eine Induktionsspule auf, welche insbesondere unmittelbar an den Sensor angrenzend angeordnet ist. Dadurch wird eine weitere kostengünstige und einfache Möglichkeit bereitgestellt, mittels welcher zuverlässig ermittelt werden kann, welcher der Sensoren betätigt wird, um die Position des betätigten Sensors zu ermitteln, um diesem die geometrische Adresse zuweisen zu können. The measuring sensor further preferably detects a magnetic field generated by the sensor. For this purpose, each measuring sensor preferably has an induction coil, which in particular is arranged directly adjacent to the sensor. This provides a further inexpensive and simple possibility by means of which it can be reliably determined which of the sensors is actuated in order to determine the position of the actuated sensor in order to be able to assign the geometric address to it.
Bevorzugt erfasst der Messsensor ein vom Sensor erzeugtes Schallsignal. Vorzugsweise weist jeder Messsensor hierfür ein Mikrofon auf. Insbesondere können die Messsensoren dabei vor jedem Sensor in Richtung einer Schallausbreitung, in welche die Ultraschallsensoren die Ultraschallsignale aussenden, platziert werden. Dadurch kann eine weitere einfache und kostengünstige Möglichkeit zur präzisen Identifizierung des von der Steuervorrichtung betätigten Sensors bereitgestellt werden. Weiterhin führt die Erfindung zu einer Anordnung zum Adressieren von Sensoren eines Assistenzsystems eines Fahrzeugs. Die Anordnung umfasst das Assistenzsystem und eine Messvorrichtung. Das Assistenzsystem weist eine Vielzahl an Sensoren und eine Steuervorrichtung auf. Die Sensoren sind dabei über einen, insbesondere gemeinsamen, Datenbus mit der Steuervorrichtung verbunden. Die Messvorrichtung weist pro Sensor einen Messsensor auf, wobei die Messsensoren an vordefinierten Positionen relativ zueinander angeordnet sind. Die Anordnung ist dabei eingerichtet, das oben beschriebene Verfahren durchzuführen. Die Anordnung erlaubt somit eine besonders einfache und kostengünstige Möglichkeit zur Adressierung der Sensoren des Assistenzsystems. Insbesondere kann dabei auf aufwendige Hardware, wie beispielsweise separate Verkabelungen jedes Sensors direkt mit der Steuervorrichtung, oder dergleichen verzichtet werden. The measuring sensor preferably detects a sound signal generated by the sensor. Each measuring sensor preferably has a microphone for this purpose. In particular, the measuring sensors can be placed in front of each sensor in the direction of sound propagation, in which the ultrasonic sensors emit the ultrasonic signals. This makes it possible to provide a further simple and inexpensive possibility for precise identification of the sensor actuated by the control device. The invention also leads to an arrangement for addressing sensors of an assistance system of a vehicle. The arrangement comprises the assistance system and a measuring device. The assistance system has a large number of sensors and a control device. The sensors are connected to the control device via an in particular common data bus. The measuring device has one measuring sensor for each sensor, the measuring sensors being arranged at predefined positions relative to one another. The arrangement is set up to carry out the method described above. The arrangement thus allows a particularly simple and inexpensive way of addressing the sensors of the assistance system. In particular, there is no need for complex hardware, such as separate cabling for each sensor directly with the control device, or the like.
Bevorzugt sind die Sensoren Ultraschallsensoren. Das Assistenzsystem ist damit insbesondere ein Ultraschall-System, welches zur Abstandserfassung verwendet werden kann. Beispielsweise kann das Assistenzsystem zur Abstandserfassung für ein Parkpilotsystem oder ein anderes Fahrerassistenzsystem dienen. The sensors are preferably ultrasonic sensors. The assistance system is therefore, in particular, an ultrasound system that can be used for distance detection. For example, the assistance system can be used to detect the distance for a parking pilot system or another driver assistance system.
Vorzugsweise weist jeder Messsensor eine Strommesseinheit auf. Jede Strommesseinheit ist dabei mit einem Sensorzweig, welcher genau einen Sensor mit dem Datenbus und/oder der Stromversorgung verbindet, verbindbar. Beispielsweise kann die Strommesseinheit als Strommessklemme ausgebildet sein, welche an den Sensorzweig angeklemmt werden kann für eine besonders einfache Strommessung. Bevorzugt misst die Strommessklemme den Strom induktiv ohne galvanische Verbindung mit dem Messobjekt. Mittels der Strommesseinheit kann dabei auf einfache Weise festgestellt werden, ob in dem Sensorzweig ein Strom fließt, wodurch darauf geschlossen werden kann, ob der aktuell betrachtete Sensor betätigt wird oder nicht. Each measuring sensor preferably has a current measuring unit. Each current measuring unit can be connected to a sensor branch which connects exactly one sensor to the data bus and / or the power supply. For example, the current measuring unit can be designed as a current measuring terminal, which can be clamped onto the sensor branch for a particularly simple current measurement. The current measuring terminal preferably measures the current inductively without a galvanic connection to the measurement object. By means of the current measuring unit, it can be determined in a simple manner whether a current is flowing in the sensor branch, whereby it can be concluded whether or not the currently viewed sensor is being actuated.
Besonders bevorzugt weist jeder Messsensor eine Induktionsspule auf, welche insbesondere eingerichtet ist, ein von dem Sensor erzeugtes Magnetfeld zu erfassen. Jede Instruktionsspule ist vorzugsweise unmittelbar an genau einem Sensor anordenbar. Das heißt, die Induktionsspule kann insbesondere unmittelbar an den Sensor angrenzend angeordnet werden, um ein durch die Betätigung des Sensors in dessen Umgebung hervorgerufenes Magnetfeld zu erfassen. Somit kann eine weitere einfache und kostengünstige Möglichkeit bereitgestellt werden, um zu erkennen, welcher der Sensoren betätigt wird. Each measuring sensor particularly preferably has an induction coil which is set up in particular to detect a magnetic field generated by the sensor. Each instruction coil can preferably be arranged directly on exactly one sensor. That is to say, the induction coil can in particular be arranged directly adjacent to the sensor in order to generate a magnetic field caused by the actuation of the sensor in its vicinity capture. A further simple and inexpensive way of recognizing which of the sensors is being actuated can thus be provided.
Vorzugsweise weist jeder Messsensor ein Mikrofon auf. Somit kann mittels des Mikrofons ein vom Sensor ausgesendetes Ultraschallsignal erfasst werden, zur Erkennung, welcher der Sensoren betätigt wird. Insbesondere können die Mikrofone hierfür vor jedem Sensor in Richtung einer Schallausbreitung, in welche die Ultraschallsensoren die Ultraschallsignale aussenden, platziert werden. Dadurch kann eine weitere einfache und kostengünstige Möglichkeit zur präzisen Identifizierung des von der Steuervorrichtung betätigten Sensors bereitgestellt werden. Each measuring sensor preferably has a microphone. An ultrasonic signal emitted by the sensor can thus be detected by means of the microphone in order to identify which of the sensors is being actuated. In particular, the microphones for this purpose can be placed in front of each sensor in the direction of sound propagation, in which the ultrasonic sensors emit the ultrasonic signals. This makes it possible to provide a further simple and inexpensive possibility for precise identification of the sensor actuated by the control device.
Bevorzugt weist jeder Messsensor eine Abschirmvorrichtung auf, welche das Mikrofon teilweise umgibt. Die Abschirmvorrichtung ist dabei so ausgerichtet, dass die Abschirmvorrichtung Störgeräusche, beispielsweise von benachbarten Sensoren abschirmt und nur Schallsignale desjenigen Sensors, an welchem das Mikrofon angeordnet ist, zum entsprechenden Mikrofon propagieren lässt. Dadurch kann besonders zuverlässig und mit besonders geringer Fehlerwahrscheinlichkeit ermittelt werden, welcher Sensor der Vielzahl an Sensoren betätigt wird. Alternativ zu einer Abschirmung der Mikrofone ist auch folgendes Verfahren möglich: Beim Betätigen eines Sensors werden die Signale aller Messmikrofone gleichzeitig erfasst und es wird durch Vergleich der Signale ermittelt, welches Mikrofon das Schallsignal als erstes und/oder mit der höchsten Amplitude empfangen hat. Each measuring sensor preferably has a shielding device which partially surrounds the microphone. The shielding device is aligned in such a way that the shielding device shields interfering noises, for example from neighboring sensors, and only allows sound signals from that sensor on which the microphone is arranged to propagate to the corresponding microphone. As a result, it can be determined in a particularly reliable manner and with a particularly low probability of error which sensor of the large number of sensors is actuated. As an alternative to shielding the microphones, the following method is also possible: When a sensor is activated, the signals from all measurement microphones are recorded simultaneously and, by comparing the signals, it is determined which microphone received the sound signal first and / or with the highest amplitude.
Vorzugsweise umfasst das Assistenzsystem ferner eine Schnittstelle, welche eingerichtet ist, die Steuervorrichtung und den Datenbus lösbar miteinander zu verbinden. Dadurch kann die Steuervorrichtung beispielsweise unabhängig vom Datenbus und von den Sensoren angeordnet werden, wodurch eine besonders einfache Handhabung und eine hohe Flexibilität des Assistenzsystems ermöglicht werden kann. Beispielsweise kann dadurch als Steuervorrichtung eine am Fahrzeug ortsfeste Steuervorrichtung verwendet werden, wobei der Datenbus mit den Sensoren als Anbauteil am Fahrzeug montiert und anschließend mit der Steuervorrichtung verbunden werden kann. Besonders bevorzugt umfasst die Anordnung ferner ein Verkleidungsteil des Fahrzeugs. Das Assistenzsystem ist dabei in oder an dem Verkleidungsteil des Fahrzeugs angeordnet. Insbesondere sind die Sensoren dabei an festen Positionen relativ zueinander im oder am Verkleidungsteil befestigt. Beispielsweise kann das Verkleidungsteil eine Stoßstange des Fahrzeugs sein. The assistance system preferably further comprises an interface which is set up to releasably connect the control device and the data bus to one another. As a result, the control device can, for example, be arranged independently of the data bus and of the sensors, whereby particularly simple handling and high flexibility of the assistance system can be made possible. For example, a control device that is stationary on the vehicle can be used as the control device, wherein the data bus with the sensors can be mounted as an attachment on the vehicle and then connected to the control device. The arrangement particularly preferably further comprises a trim part of the vehicle. The assistance system is arranged in or on the trim part of the vehicle. In particular, the sensors are fastened in fixed positions relative to one another in or on the cladding part. For example, the trim part can be a bumper of the vehicle.
Vorzugsweise sind das Assistenzsystem und die Messvorrichtung als separate Bauteile ausgebildet. Die beschriebene Adressierung bietet dabei den Vorteil, dass den Sensoren des Assistenzsystems mithilfe der Messvorrichtung eine eindeutige logische und geometrische Adresse zugewiesen werden kann, wobei nach dieser Adressierung die Messvorrichtung vorzugsweise entfernt und das Assistenzsystem separat gehandhabt werden kann. The assistance system and the measuring device are preferably designed as separate components. The addressing described offers the advantage that the sensors of the assistance system can be assigned a unique logical and geometric address with the aid of the measuring device, after which addressing the measuring device can preferably be removed and the assistance system can be handled separately.
Kurze Beschreibung der Zeichnungen Brief description of the drawings
Im Folgenden wird die Erfindung anhand von Ausführungsbeispielen in Verbindung mit den Figuren beschrieben. In den Figuren sind funktional gleiche Bauteile jeweils mit gleichen Bezugszeichen gekennzeichnet. Dabei zeigt: The invention is described below using exemplary embodiments in conjunction with the figures. In the figures, functionally identical components are each identified by the same reference symbols. It shows:
Figur 1 eine vereinfachte schematische Ansicht einer Anordnung zumFigure 1 is a simplified schematic view of an arrangement for
Adressieren von Sensoren eines Assistenzsystems eines Fahrzeugs gemäß einem ersten Ausführungsbeispiel der Erfindung, Addressing sensors of an assistance system of a vehicle according to a first exemplary embodiment of the invention,
Figur 2 eine vereinfachte schematische Ansicht einer Anordnung zum Adressieren von Sensoren eines Assistenzsystems eines Fahrzeugs gemäß einem zweiten Ausführungsbeispiel der Erfindung, und FIG. 2 shows a simplified schematic view of an arrangement for addressing sensors of an assistance system of a vehicle according to a second exemplary embodiment of the invention, and FIG
Figur 3 eine vereinfachte schematische Ansicht einer Anordnung zum Adressieren von Sensoren eines Assistenzsystems eines Fahrzeugs gemäß einem dritten Ausführungsbeispiel der Erfindung. FIG. 3 shows a simplified schematic view of an arrangement for addressing sensors of an assistance system of a vehicle according to a third exemplary embodiment of the invention.
Bevorzugte Ausführungsformen der Erfindung Figur 1 zeigt eine vereinfachte schematische Ansicht einer Anordnung 1 zum Adressieren von Sensoren 2 eines Assistenzsystems 20 eines Fahrzeugs gemäß einem ersten Ausführungsbeispiel der Erfindung. Preferred embodiments of the invention FIG. 1 shows a simplified schematic view of an arrangement 1 for addressing sensors 2 of an assistance system 20 of a vehicle according to a first exemplary embodiment of the invention.
Die Anordnung 1 umfasst das Assistenzsystem 20 und eine Messvorrichtung 40. Bei dem Assistenzsystem 20 handelt es sich um ein Fahrerassistenzsystem 20 in Form eines Parkassistenten. Dabei umfasst das Assistenzsystem 20 eine Vielzahl an Sensoren 2, welche Ultraschallsensoren sind, um durch Aussenden und Empfangen von Ultraschallsignalen eine Erkennung von Objekte in der nahen Umgebung zu ermöglichen. The arrangement 1 comprises the assistance system 20 and a measuring device 40. The assistance system 20 is a driver assistance system 20 in the form of a parking assistant. The assistance system 20 comprises a large number of sensors 2, which are ultrasonic sensors, in order to enable objects in the immediate vicinity to be recognized by transmitting and receiving ultrasonic signals.
Die Sensoren 2 sind über einen gemeinsamen Datenbus 25 miteinander verbunden. Die Stromversorgung der Sensoren 2 erfolgt vorzugsweise über den Datenbus 25, es kann aber auch eine separate Stromversorgungsleitung vorhanden sein, die parallel zum Datenbus 25 verlegt ist und wie dieser zu den Sensoren 2 abzweigt. The sensors 2 are connected to one another via a common data bus 25. The sensors 2 are preferably supplied with power via the data bus 25, but a separate power supply line can also be present, which is laid parallel to the data bus 25 and branches off to the sensors 2 as it is.
Zwischen jedem Sensor 2 und dem Datenbus 25 befindet sich dabei ein separater Sensorzweig 21, welcher den Datenbus 25 mit dem entsprechenden Sensor 2 verbindet. Eine separate Stromversorgungsleitung ist gegebenenfalls Bestandteil des Sensorzweigs 21 A separate sensor branch 21, which connects the data bus 25 to the corresponding sensor 2, is located between each sensor 2 and the data bus 25. A separate power supply line may be part of the sensor branch 21
Weiterhin umfasst das Assistenzsystem 20 eine Steuervorrichtung 3 und eine Schnittstelle 5. Die Schnittstelle ist beispielsweise als Stecker ausgebildet und ermöglicht eine lösbare Verbindung der Steuervorrichtung 3 und des Datenbusses 25 miteinander. Die Steuervorrichtung 3 ist dabei eingerichtet, die Sensoren 2 anzusteuern sowie von den Sensoren 2 Daten zu empfangen. The assistance system 20 also includes a control device 3 and an interface 5. The interface is designed, for example, as a plug and enables the control device 3 and the data bus 25 to be detachably connected to one another. The control device 3 is set up to control the sensors 2 and to receive data from the sensors 2.
Die Anordnung 1 umfasst ein Verkleidungsteil 100 des Fahrzeugs, in welchem die Sensoren an festen Positionen angeordnet sind. Das Verkleidungsteil 100 ist beispielsweise eine Stoßstange des Fahrzeugs. The arrangement 1 comprises a trim part 100 of the vehicle, in which the sensors are arranged at fixed positions. The trim part 100 is, for example, a bumper of the vehicle.
Die Sensoren 2 sind an festen Positionen im Verkleidungsteil 100 angeordnet. Weiterhin sind sämtliche Sensoren 2 identisch, also baugleich ausgebildet, wobei jeder Sensor 2 eine individuelle Sensorkennung, beispielsweise eine individuelle Seriennummer, aufweist. Zur optimalen Funktion des Assistenzsystems 20 ist es erforderlich, dass eine Unterscheidung der Sensoren 2 und eine Zuordnung der jeweiligen Position jedes Sensors 2 am Verkleidungsteil 100 bekannt ist. Hierfür ist nach der Montage der Sensoren 2 im Verkleidungsteil 100 eine Adressierung jedes Sensors 2 erforderlich. Um auf einfache Art und Weise eine korrekte Adressierung der Sensoren 2 vornehmen zu können, ist das nachfolgend beschriebene Verfahren vorgesehen. Die Verfahrensschritte werden dabei beispielhaft an genau einem Sensor 2 beschrieben. The sensors 2 are arranged at fixed positions in the trim part 100. Furthermore, all of the sensors 2 are identical, that is, they are constructed identically, with each sensor 2 having an individual sensor identifier, for example an individual serial number. For the optimal functioning of the assistance system 20, it is necessary that a distinction between the sensors 2 and an assignment of the respective position of each sensor 2 on the trim part 100 is known. For this purpose, after the sensors 2 have been installed in the cladding part 100, each sensor 2 must be addressed. In order to be able to undertake correct addressing of the sensors 2 in a simple manner, the method described below is provided. The method steps are described using exactly one sensor 2 as an example.
In einem ersten Schritt erfolgt ein Identifizieren der Sensorkennung des Sensors 2 mittels der Steuervorrichtung 3. Anschließend weist die Steuervorrichtung 3 dem Sensor 2 eine logische Adresse basierend auf der Sensorkennung zu. Dies wird auch als logische Adressierung bezeichnet. Anhand der logischen Adresse kann die Steuervorrichtung 3 jeden der Sensoren 2 separat ansteuern und diese unterscheiden. In a first step, the sensor identification of the sensor 2 is identified by means of the control device 3. The control device 3 then assigns the sensor 2 a logical address based on the sensor identification. This is also known as logical addressing. On the basis of the logical address, the control device 3 can control each of the sensors 2 separately and differentiate between them.
Im nächsten Schritt erfolgt ein Betätigen des genau einen Sensors 2, wobei alle anderen Sensoren 2 nicht betätigt werden. Insbesondere wird der Sensor 2 hierbei so von der Steuervorrichtung 3 betätigt wie in einem Normalbetrieb, also so, dass der Sensor 2 ein Ultraschallsignal aussendet. Während der Betätigung des Sensors 2 erfolgt ein Ermitteln einer Position dieses betätigten Sensors 2 relativ zu den weiteren Sensoren 2. In the next step, exactly one sensor 2 is actuated, with none of the other sensors 2 being actuated. In particular, the sensor 2 is actuated by the control device 3 in the same way as in normal operation, that is to say in such a way that the sensor 2 emits an ultrasonic signal. During the actuation of the sensor 2, a position of this actuated sensor 2 is determined relative to the further sensors 2.
Das Ermitteln der Position des betätigten Sensors 2 erfolgt dabei mittels der Messvorrichtung 40. Die Messvorrichtung 40 weist pro Sensor 2 einen Messsensor 4 auf. Jeder Messsensor 4 weist eine Strommesseinheit 4a in Form einer Strommessklemme auf, welche jeweils mit dem entsprechenden Sensorzweig 21 des Sensors 2 verbunden ist. Durch das Betätigen von genau einem Sensor 2 liegt in genau einem der Sensorzweige 21 ein Stromfluss vor. Mittels der Messsensoren 4 kann hierbei festgestellt werden, an welchem der Sensorzweige 21 der Stromfluss vorliegt. The position of the actuated sensor 2 is determined by means of the measuring device 40. The measuring device 40 has one measuring sensor 4 for each sensor 2. Each measuring sensor 4 has a current measuring unit 4a in the form of a current measuring terminal, which is each connected to the corresponding sensor branch 21 of the sensor 2. By actuating exactly one sensor 2, there is a current flow in exactly one of the sensor branches 21. By means of the measuring sensors 4, it can be determined at which of the sensor branches 21 the current flow is present.
Die Messvorrichtung 40 ist dabei so ausgebildet, dass die Messsensoren 4 an vordefinierten Positionen relativ zueinander angeordnet sind. Das heißt, die relative Anordnung der Messsensoren 4 ist bekannt. Somit kann beim Identifizieren, welcher Sensor 2 der Vielzahl an Sensoren 2 betätigt wird, mittels der Messvorrichtung 40 die Position des betätigten Sensors 2 relativ zu den weiteren Sensoren 2 ermittelt werden. The measuring device 40 is designed in such a way that the measuring sensors 4 are arranged at predefined positions relative to one another. That is, the relative arrangement of the measuring sensors 4 is known. Thus, the Identify which sensor 2 of the plurality of sensors 2 is actuated, by means of the measuring device 40 the position of the actuated sensor 2 relative to the further sensors 2 can be determined.
Die Steuervorrichtung 3 und die Messvorrichtung 40 sind lösbar miteinander verbindbar, sodass die Messvorrichtung 40 die Information über die Position des betätigten Sensors 2 an die Steuervorrichtung 3 weitergeben kann. Im Anschluss an das Ermitteln der Position des betätigten Sensors 2 relativ zu den weiteren Sensoren 2 erfolgt als weiterer Schritt ein Zuweisen einer geometrischen Adresse an den Sensor 2 basierend auf der ermittelten Position. Diese geometrische Adresse wird dabei in einem nicht-flüchtigen Speicher des Sensors 2 gespeichert, sodass ein Zugriff auf die geometrische Adresse jederzeit möglich ist. The control device 3 and the measuring device 40 can be detachably connected to one another, so that the measuring device 40 can pass on the information about the position of the actuated sensor 2 to the control device 3. Following the determination of the position of the actuated sensor 2 relative to the further sensors 2, a geometric address is assigned to the sensor 2 based on the determined position as a further step. This geometric address is stored in a non-volatile memory of the sensor 2 so that access to the geometric address is possible at any time.
Dadurch kann nach Abschluss der Adressierung die Messvorrichtung 40 vom Assistenzsystem 20 getrennt werden, sodass das Verkleidungsteil 100 mit dem Assistenzsystem 20 später beispielsweise am Fahrzeug montiert werden kann und unmittelbar für den Einsatz bereitsteht. Durch die Speicherung der geometrischen Adresse kann dabei beispielsweise auch eine Trennung der Steuervorrichtung 3 vom Datenbus 25 erfolgen, wobei auch bei einer späteren erneuten Verbindung einen Zugriff auf die nach wie vor korrekt adressierten Sensoren 2 möglich ist. Beispielsweise können hierbei auch unterschiedliche Steuervorrichtungen 3 mit dem Datenbus 25 verbunden werden. As a result, after the addressing has been completed, the measuring device 40 can be separated from the assistance system 20, so that the trim part 100 with the assistance system 20 can later be mounted on the vehicle, for example, and is immediately available for use. By storing the geometric address, for example, the control device 3 can also be separated from the data bus 25, with access to the sensors 2, which are still correctly addressed, also being possible in the event of a subsequent reconnection. For example, different control devices 3 can also be connected to the data bus 25.
Figur 2 zeigt eine vereinfachte schematische Ansicht einer Anordnung 1 zum Adressieren von Sensoren 2 eines Assistenzsystems 20 eines Fahrzeugs gemäß einem zweiten Ausführungsbeispiel der Erfindung. Das zweite Ausführungsbeispiel entspricht im Wesentlichen dem ersten Ausführungsbeispiel der Figur 1 mit dem Unterschied einer alternativen Ermittlung des betätigten Sensors 2. Im zweiten Ausführungsbeispiel der Figur 2 sind die Messsensoren 4 der Messvorrichtung 40 jeweils als Induktionsspulen 4b ausgebildet. Die Induktionsspulen 4b sind dabei eingerichtet, ein durch die Betätigung des Sensors 2 in unmittelbarer Nähe des Sensor 2 hervorgerufenes Magnetfeld zu erfassen. Die Betätigung des Sensors 2 wird somit im Ansprechen auf ein erkanntes Magnetfeld an einer der Induktionsspulen 4b erkannt. Die Induktionsspulen 4b sind dabei unmittelbar an einer Rückseite jedes Sensors 2 angeordnet während der Durchführung des Verfahrens. Somit bietet sich eine weitere einfache und kostengünstige Möglichkeit zur schnellen und eindeutigen Adressierung der Sensoren 2 des Assistenzsystems 20. FIG. 2 shows a simplified schematic view of an arrangement 1 for addressing sensors 2 of an assistance system 20 of a vehicle according to a second exemplary embodiment of the invention. The second exemplary embodiment essentially corresponds to the first exemplary embodiment in FIG. 1 with the difference being an alternative determination of the actuated sensor 2. In the second exemplary embodiment in FIG. 2, the measuring sensors 4 of the measuring device 40 are each designed as induction coils 4b. The induction coils 4b are set up to detect a magnetic field caused by the actuation of the sensor 2 in the immediate vicinity of the sensor 2. The actuation of the sensor 2 is thus recognized in response to a recognized magnetic field on one of the induction coils 4b. The induction coils 4b are in this case directly on a rear side of each sensor 2 arranged while the procedure is being carried out. This offers a further simple and inexpensive option for fast and unambiguous addressing of the sensors 2 of the assistance system 20.
Figur 3 zeigt eine vereinfachte schematische Ansicht einer Anordnung 1 zum Adressieren von Sensoren 2 eines Assistenzsystems 20 eines Fahrzeugs gemäß einem dritten Ausführungsbeispiel der Erfindung. Das dritte Ausführungsbeispiel entspricht im Wesentlichen dem ersten Ausführungsbeispiel der Figur 1 mit dem Unterschied einerweiteren alternativen Ermittlung des betätigten Sensors 2. Im dritten Ausführungsbeispiel der Figur 3 sind die Messsensoren 4 der Messvorrichtung 40 jeweils als Mikrofone 4c ausgebildet. Die Mikrofone 4c sind dabei eingerichtet, ein Schallsignal, welches der Sensor 2 bei dessen Betätigung erzeugt, zu erfassen. Die Betätigung des Sensors 2 wird somit im Ansprechen auf ein erkanntes Schallsignal an einem der Mikrofone 4c erkannt. FIG. 3 shows a simplified schematic view of an arrangement 1 for addressing sensors 2 of an assistance system 20 of a vehicle according to a third exemplary embodiment of the invention. The third embodiment essentially corresponds to the first embodiment of FIG. 1 with the difference of a further alternative determination of the actuated sensor 2. In the third embodiment of FIG. 3, the measuring sensors 4 of the measuring device 40 are each designed as microphones 4c. The microphones 4c are set up to record a sound signal which the sensor 2 generates when it is actuated. The actuation of the sensor 2 is thus recognized in response to a recognized sound signal at one of the microphones 4c.
Die Mikrofone 4c sind dabei vor jedem Sensor 2 platziert, sodass die Schallabstrahlung vom Sensor 2 direkt auf das entsprechende Mikrofon 4c gerichtet ist. Jeder Messsensor 4 weist dabei zusätzlich eine Abschirmvorrichtung 4d auf, welche das entsprechende Mikrofon 4c teilweise umgibt und in Richtung des Sensors 2 offen ist. Dadurch verhindert die Abschirmvorrichtung 4d, dass die Mikrofone 4c Störgeräusche, beispielsweise durch benachbarte Sensoren 2 aufnehmen können, wodurch eine Fehlerwahrscheinlichkeit bei der Adressierung der Sensoren 2 verringert wird. Somit wird noch eine weitere einfache und kostengünstige Möglichkeit bereitgestellt, um schnell und präzise die Sensoren 2 des Assistenzsystems 20 adressieren zu können. The microphones 4c are placed in front of each sensor 2 so that the sound radiation from the sensor 2 is directed directly at the corresponding microphone 4c. Each measuring sensor 4 additionally has a shielding device 4d which partially surrounds the corresponding microphone 4c and is open in the direction of the sensor 2. In this way, the shielding device 4d prevents the microphones 4c from being able to pick up interfering noises, for example from neighboring sensors 2, as a result of which the probability of errors when addressing the sensors 2 is reduced. A further simple and inexpensive possibility is thus provided in order to be able to address the sensors 2 of the assistance system 20 quickly and precisely.
Alternativ kann auf die Abschirmung der Mikrofone 4c verzichtet werden, wenn bei der Auswertung der Mikrofonsignale zusätzliche Merkmale wie z.B. der Zeitpunkt des Schallsignals und/oder die Amplitude erfasst werden und diese Merkmale aller Mikrofone 4c miteinander verglichen werden. Der früheste Zeitpunkt des empfangenen Schallsignals oder die größte Amplitude kennzeichnet den Ort der Schallaussendung. Alternatively, the screening of the microphones 4c can be dispensed with if additional features such as the time of the sound signal and / or the amplitude are recorded during the evaluation of the microphone signals and these features of all microphones 4c are compared with one another. The earliest point in time of the received sound signal or the greatest amplitude characterizes the location of the sound emission.
Es sei angemerkt, dass die beschriebenen Ausführungsbeispiele beliebig miteinander kombiniert werden können. Beispielsweise kann eine Messvorrichtung 40 bereitgestellt werden, welche die Position des betätigten Sensors 2 basierend auf der Strommessung und/oder der Magnetfeldmessung und/oder der Schallmessung bestimmen kann. Das heißt, die Messsensoren 4 einer derartigen Messvorrichtung 40 können sowohl Strommesseinheiten 4a als auch Induktionsspulen 4b und/oder Mikrofone 4c aufweisen. It should be noted that the exemplary embodiments described can be combined with one another as desired. For example, a Measuring device 40 are provided, which can determine the position of the actuated sensor 2 based on the current measurement and / or the magnetic field measurement and / or the sound measurement. That is, the measuring sensors 4 of such a measuring device 40 can have both current measuring units 4a and induction coils 4b and / or microphones 4c.

Claims

Ansprüche Expectations
1. Verfahren zur Adressierung von Sensoren (2) eines Assistenzsystems (20) eines Fahrzeugs, wobei das Assistenzsystem (20) eine Steuervorrichtung (3) und eine Vielzahl an Sensoren (2) aufweist, wobei die Sensoren (2) über einen Datenbus (25) mit der Steuervorrichtung (3) verbunden sind, wobei jeder Sensor (2) eine individuelle Sensorkennung aufweist, und wobei das Verfahren pro Sensor (2) die Schritte umfasst: 1. A method for addressing sensors (2) of an assistance system (20) of a vehicle, the assistance system (20) having a control device (3) and a plurality of sensors (2), the sensors (2) being connected via a data bus (25 ) are connected to the control device (3), each sensor (2) having an individual sensor identification, and wherein the method comprises the steps for each sensor (2):
- Identifizieren der Sensorkennung des Sensors (2), - Identifying the sensor ID of the sensor (2),
- Zuweisen einer logischen Adresse an den Sensor (2) basierend auf der Sensorkennung, - Assigning a logical address to the sensor (2) based on the sensor identification,
- Betätigen des Sensors (2), - actuation of the sensor (2),
- Ermitteln einer Position des betätigten Sensors (2) relativ zu den weiteren Sensoren (2), und - Determining a position of the actuated sensor (2) relative to the further sensors (2), and
- Zuweisen einer geometrischen Adresse an den Sensor (2) basierend auf der ermittelten Position, wobei das Ermitteln der Position des betätigten Sensors (2) mittels einer Messvorrichtung (40) erfolgt, welche pro Sensor (2) einen Messsensor (4) aufweist, und wobei die Messsensoren (4) an vordefinierten Positionen relativ zueinander angeordnet sind. - Assigning a geometric address to the sensor (2) based on the determined position, the position of the actuated sensor (2) being determined by means of a measuring device (40) which has one measuring sensor (4) per sensor (2), and wherein the measuring sensors (4) are arranged at predefined positions relative to one another.
2. Verfahren nach Anspruch 1, wobei die Sensoren (2) Ultraschallsensoren sind. 2. The method according to claim 1, wherein the sensors (2) are ultrasonic sensors.
3. Verfahren nach einem der vorhergehenden Ansprüche, ferner umfassend den Schritt: Speichern der geometrischen Adresse in einen nicht-flüchtigen Speicher des Sensors (2). 3. The method according to any one of the preceding claims, further comprising the step of: storing the geometric address in a non-volatile memory of the sensor (2).
4. Verfahren nach einem der vorhergehenden Ansprüche, wobei der Messsensor (4) ein Stromsignal erfasst, mittels welchem der Sensor (2) betätigt wird. 4. The method according to any one of the preceding claims, wherein the measuring sensor (4) detects a current signal by means of which the sensor (2) is actuated.
5. Verfahren nach einem der vorhergehenden Ansprüche, wobei der Messsensor (4) ein vom Sensor (2) erzeugtes Magnetfeld erfasst. 5. The method according to any one of the preceding claims, wherein the measuring sensor (4) detects a magnetic field generated by the sensor (2).
6. Verfahren nach einem der Ansprüche 2 bis 5, wobei der Messsensor (4) ein vom Sensor (2) erzeugtes Schallsignal erfasst. 6. The method according to any one of claims 2 to 5, wherein the measuring sensor (4) detects a sound signal generated by the sensor (2).
7. Anordnung zum Adressieren von Sensoren (2) eines Assistenzsystems (20) eines Fahrzeugs, umfassend: 7. Arrangement for addressing sensors (2) of an assistance system (20) of a vehicle, comprising:
- das Assistenzsystem (20), welches eine Vielzahl an Sensoren (2) und eine Steuervorrichtung (3) aufweist, wobei die Sensoren (2) über einen Datenbus (25) mit der Steuervorrichtung (3) verbunden sind, wobei jeder Sensor (2) eine individuelle Sensorkennung aufweist, und - The assistance system (20), which has a plurality of sensors (2) and a control device (3), the sensors (2) being connected to the control device (3) via a data bus (25), each sensor (2) has an individual sensor identifier, and
- eine Messvorrichtung (40), welche pro Sensor (2) einen Messsensor (4) aufweist, wobei die Messsensoren (4) an vordefinierten Position relativ zueinander angeordnet sind, und wobei die Anordnung (1) eingerichtet ist zur Durchführung des Verfahrens nach einem der vorhergehenden Ansprüche. - A measuring device (40) which has one measuring sensor (4) per sensor (2), the measuring sensors (4) being arranged at a predefined position relative to one another, and the arrangement (1) being set up to carry out the method according to one of the preceding claims.
8. Anordnung nach Anspruch 7, wobei die Sensoren (2) Ultraschallsensoren sind. 8. Arrangement according to claim 7, wherein the sensors (2) are ultrasonic sensors.
9. Anordnung nach einem der Ansprüche 7 oder 8, wobei jeder Messsensor (4) eine Strommesseinheit (4a) aufweist, und wobei jede Strommesseinheit (4a) mit einem Sensorzweig (21), welcher genau einen Sensor (2) mit dem Datenbus (25) verbindet, verbindbar ist. 9. Arrangement according to one of claims 7 or 8, wherein each measuring sensor (4) has a current measuring unit (4a), and wherein each current measuring unit (4a) with a sensor branch (21), which exactly one sensor (2) with the data bus (25 ) connects, is connectable.
10. Anordnung nach einem der Ansprüche 7 bis 9, wobei jeder Messsensor (4) eine Induktionsspule (4b) aufweist, und wobei insbesondere jede Induktionsspule (4b) unmittelbar an genau einem Sensor (2) anordenbar ist. 10. Arrangement according to one of claims 7 to 9, wherein each measuring sensor (4) has an induction coil (4b), and in particular each induction coil (4b) can be arranged directly on exactly one sensor (2).
11. Anordnung nach einem der Ansprüche 8 bis 10, wobei jeder Messsensor (4) ein Mikrofon (4c) umfasst. 11. Arrangement according to one of claims 8 to 10, wherein each measuring sensor (4) comprises a microphone (4c).
12. Anordnung nach Anspruch 11, wobei jeder Messsensor (4) eine12. The arrangement according to claim 11, wherein each measuring sensor (4) one
Abschirmvorrichtung (4d) aufweist, welche das Mikrofon (4c) teilweise umgibt und gegen Störgeräusche abschirmt. Has shielding device (4d) which partially surrounds the microphone (4c) and shields it from interfering noises.
13. Anordnung nach einem der Ansprüche 7 bis 12, wobei das Assistenzsystem (20) eine Schnittstelle (5) umfasst, welche eingerichtet ist, die Steuervorrichtung (3) und den Datenbus (25) lösbar miteinander zu verbinden. 13. Arrangement according to one of claims 7 to 12, wherein the assistance system (20) comprises an interface (5) which is set up to releasably connect the control device (3) and the data bus (25) to one another.
14. Anordnung nach einem der Ansprüche 7 bis 13, ferner umfassend ein Verkleidungsteil (100), wobei das Assistenzsystem (20) in oder an dem Verkleidungsteil (100) des Fahrzeugs angeordnet sind. 14. Arrangement according to one of claims 7 to 13, further comprising a trim part (100), wherein the assistance system (20) are arranged in or on the trim part (100) of the vehicle.
15. Anordnung nach einem der Ansprüche 7 bis 14, wobei das Assistenzsystem (20) und die Messvorrichtung (40) als separate Bauteile ausgebildet sind. 15. Arrangement according to one of claims 7 to 14, wherein the assistance system (20) and the measuring device (40) are designed as separate components.
PCT/EP2021/067095 2020-06-30 2021-06-23 Method for addressing sensors of an assistance system of a vehicle WO2022002712A1 (en)

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