EP4078434A2 - Steuergerät für ein fahrerassistenzsystem und fahrerassistenzsystem - Google Patents
Steuergerät für ein fahrerassistenzsystem und fahrerassistenzsystemInfo
- Publication number
- EP4078434A2 EP4078434A2 EP20829848.9A EP20829848A EP4078434A2 EP 4078434 A2 EP4078434 A2 EP 4078434A2 EP 20829848 A EP20829848 A EP 20829848A EP 4078434 A2 EP4078434 A2 EP 4078434A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- processor
- control device
- data
- sensor module
- sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
- G06F11/0706—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment
- G06F11/0736—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment in functional embedded systems, i.e. in a data processing system designed as a combination of hardware and software dedicated to performing a certain function
- G06F11/0739—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment in functional embedded systems, i.e. in a data processing system designed as a combination of hardware and software dedicated to performing a certain function in a data processing system embedded in automotive or aircraft systems
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/50—Context or environment of the image
- G06V20/56—Context or environment of the image exterior to a vehicle by using sensors mounted on the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/46—Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
- B60S1/48—Liquid supply therefor
- B60S1/481—Liquid supply therefor the operation of at least part of the liquid supply being controlled by electric means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
- B60W50/0205—Diagnosing or detecting failures; Failure detection models
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/04—Monitoring the functioning of the control system
- B60W50/045—Monitoring control system parameters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/06—Improving the dynamic response of the control system, e.g. improving the speed of regulation or avoiding hunting or overshoot
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W60/00—Drive control systems specially adapted for autonomous road vehicles
- B60W60/001—Planning or execution of driving tasks
- B60W60/0015—Planning or execution of driving tasks specially adapted for safety
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/1629—Error detection by comparing the output of redundant processing systems
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
- G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
- G06V10/147—Details of sensors, e.g. sensor lenses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
- B60W50/0205—Diagnosing or detecting failures; Failure detection models
- B60W2050/0215—Sensor drifts or sensor failures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2420/00—Indexing codes relating to the type of sensors based on the principle of their operation
- B60W2420/40—Photo, light or radio wave sensitive means, e.g. infrared sensors
- B60W2420/408—Radar; Laser, e.g. lidar
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
Definitions
- the invention relates to a control device, in particular a LIDAR control device for processing sensor data from a LIDAR sensor for a driver assistance system in a motor vehicle, such as a passenger car or truck.
- the inven tion also relates to such a driver assistance system with a LIDAR sensor for motor vehicles.
- a multiprocessor system for automated driving systems is known.
- the well-known multi-processor system should reliably process large amounts of data from several sensors for automated driving systems.
- a safety processor is provided on the known multiprocessor system, which checks control commands for automated driving that are calculated by a first high-performance processor.
- the floch power processor can be connected to an LLAR processing module in order to receive and process preprocessed sensor data from a LIDAR sensor. While sufficient capacities for processing large sensor data streams are created with the separate LIDAR processing module, verification of processing steps is limited to checking the control commands determined by the high-performance processor with the security processor.
- Automated driving systems benefit from the highest possible resolution environment sensors, which map the environment in which the vehicle equipped with the automated driving system is better.
- High-resolution environment sensors must be connected to a driver assistance system or control device processing the data from the environment sensor via high bandwidth communication links in order to ensure prompt transmission and further processing of the data.
- Communication links with a high bandwidth are sensitive to electromagnetic interference on long transmission routes.
- the object of the invention is to overcome the disadvantages of the prior art and, in particular, to provide a control device and a driver assistance system which are improved in terms of reliability and the ratio of costs, system weight and reliability.
- a control unit for a driver assistance system comprises a sensor interface via which the control unit can be connected to at least one sensor module for receiving data from the at least one sensor module, a power processor which is set up to deliver objects based on the data from the at least one sensor module recognize and provide object data and a system interface via which the control device can be connected to a higher-level control device of the driver assistance system for forwarding object data provided by the performance processor.
- the control device has a sensor voltage supply via which it provides the operating energy for the at least one sensor module.
- the sensor module voltage supply includes power electronics that have metal oxide semiconductor field effect transistors and / or gallium nitride transistors.
- the sensor module voltage supply is preferably set up for a supply power of at least 10 watts per sensor module.
- the sensor module voltage supply is set up in such a way that it provides a supply power reserve.
- the driver assistance system is designed to guide a motor vehicle in the longitudinal and / or transverse direction.
- a LIDAR sensor module can comprise one or more LIDAR sensors, so that the sensor interface is set up for the transmission of large amounts of data of at least 100 megabits per second per sensor module.
- the power processor is equipped in particular with one or more graphic processing units (GPU) in order to be able to further process the large amounts of data quickly.
- the system interface is set up in particular to transmit data with a bandwidth of at least 1 gigabit per second.
- the power supply for the sensor modules is integrated in the control unit.
- the power supply is arranged on a circuit board with the power processor.
- a control device for a driver assistance system comprises a sensor interface, via which the control device can be connected to at least one sensor module for receiving data from the at least one sensor module, a power processor which is set up on the basis of the data of the at least a sensor module to recognize objects and provide object data, a system interface via which the control unit can be connected to a superordinate control unit of the driver assistance system for forwarding object data provided by the performance processor, and a security processor that is connected to the performance processor and is set up to do so, at least to check a processing step of the performance processor for errors and / or a processing status of the performance processor.
- the control device comprises a further power processor which is connected to the power processor.
- a power processor As a separate electronic component in the control device can be integrated and is equipped with one or more computing cores.
- the power processor and the further power processor are connected to one another via two mutually independent data transmission channels.
- the data transmission channels use different transmission protocols.
- One channel is preferably designed in accordance with the PCI Express standard and another in accordance with a network protocol such as Ethernet.
- one of the data transmission channels is formed by coupling several ports of network switches integrated into the power processors.
- the control device has a sensor voltage supply via which it provides the operating energy for the at least one sensor module.
- the sensor module voltage supply includes power electronics that have metal oxide semiconductor field effect transistors and / or gallium nitride transistors.
- the sensor module voltage supply is preferably set up for a supply power of at least 10 watts per sensor module.
- the sensor module voltage supply is set up in such a way that it provides a supply power reserve.
- control device comprises a safety processor which is connected to the sensor voltage supply and is set up to monitor the sensor voltage supply.
- the security processor is designed such that at least one Automotive Safety Integrity Level B, C or preferably D is achieved by the safety processor. Checking the sensor voltage supply ensures that the voltage supply operates in a predetermined range of electromagnetic compatibility with regard to at least the sensor interface and / or the system interface.
- control device has a safety processor which is connected to the power processor and is set up to check at least one processing step of the power processor for errors or one of the power processors and / or a processing status of the power processor or Check one of the performance processors.
- the use of a safety processor at the functional level for processing raw data from the sensor modules and for object recognition improves the reliability of the control device and the transmitted object data.
- the safety processor is designed to check calculation results, the processing sequence and / or status information of the power processor or one of the power processors and / or any component of the control device connected to the safety processor.
- control device is designed and set up so that the security processor for checking a processing step in the object recognition of the power processor or one of the power processors for data from the sensor module and / or object data via an interface to Power processor accesses.
- the interface is designed according to the Serial Peripheral Interface Standard. The exclusive data access with the aid of the power processor or a first of the power processors avoids potential overloading of the safety processor due to large amounts of data received from the sensor modules.
- the security processor is designed to verify processing times and selected processing steps of the power processor without reproducing the complete program sequences implemented on the power processor.
- the sensor interface is designed to be connected to at least three sensor modules, in particular to four sensor modules, at the same time.
- the control device is preferably also set up to time-synchronize the data of the at least three sensor modules received via the sensor interface.
- the control device With the help of the connection of three or more sensor modules, a highly detailed object determination in the vicinity of a motor vehicle is possible.
- the time synchronization of the received data by means of the sensor interface enables immediate processing in the power processor without further preprocessing, which frees up computing capacity of the power processor for other tasks.
- the power processor or the power processors are set up and designed to determine an area that can be traveled by a motor vehicle on the basis of the data from the at least one sensor module.
- the provision of data relating to the drivable area is a safety-critical function in automated driving. With the increase in the reliability of the control unit for determining the passable area through the use of the safety process, the overall reliability of an automated driving system improves.
- control device comprises a regulation for a cooling system of the control device.
- control unit is actively cooled.
- control device includes air cooling.
- control device includes liquid cooling.
- control device comprises power electronics for controlling a cleaning system for the at least one sensor module.
- the power electronics are set up and designed to control a pump.
- the power electronics include a driver circuit for a brushless motor, such as a pump motor.
- the control device thus includes all components that are necessary for supplying and keeping the sensor modules in operation. All these components benefit from the security processor provided in the control device and its function monitoring, so that overall a highly secure and highly available object data provision is realized.
- the power processor according to the first or second aspect of the invention or at least one of the power processors is connected to the sensor interface for receiving data from the at least one sensor module and to the system interface and is designed to be based on the data from the at least one sensor module to forward determined object data to the system interface.
- the sensor interface is preferably connected exclusively to the power processor or to precisely one of the power processors. Connected means the connection of two communication connections designed as hardware for data transmission. By eliminating the need for a separate connection between the sensor interface and the safety processor, the complexity and costs of the control unit are reduced. A check is carried out by means of access via the service processor.
- control device comprises a housing, the housing being designed to be dust-tight and / or water-tight.
- the housing is preferably designed at least in accordance with protection class IP6K7.
- the housing has a ventilation membrane secured against ingress of water.
- control device is preferably a LIDAR control device.
- the at least one sensor module is preferably a LIDAR sensor module.
- a control device for a driver assistance system comprises a sensor interface via which the control device can be connected to at least one sensor module for receiving data from the at least one sensor module, based on a power processor that is configured to do so to recognize the data of the at least one sensor module objects and provide recognized objects; and a further power processor which is connected to the power processor for the transmission of control commands and / or of data from the at least one sensor module.
- the power processor and the further power processor for a safe operating mode are configurable such that the further power processor is set up to recognize objects on the basis of the same data of the at least one sensor module and to provide recognized objects, and the power processor and the further power processor for a high-performance operating mode can be configured in such a way that the power processor and the further power processor are each set up to select part of the data of the sensor module based on the data of the at least one sensor module and assign it to a respective one of the power processors and recognize objects based on the assigned data and provide recognized objects.
- control unit with a safe and a high-performance operating mode allows one and the same control unit to be used in different applications for driver assistance systems, i.e. both in scenarios that require particularly secure object provisioning and in scenarios in which objects with large data volumes are made available should be.
- the power processor and / or the further power processor includes a hardware diagnostic module that is configured to include one or more of the power supply, clock, processor reset, non-volatile memory such as flash memory, volatile memory such as static random access memory (SRAM), and connections to check between the above for their correct function.
- a hardware diagnostic module that is configured to include one or more of the power supply, clock, processor reset, non-volatile memory such as flash memory, volatile memory such as static random access memory (SRAM), and connections to check between the above for their correct function.
- the power processor and / or the further power processor comprises a software diagnostic module, i.e. a diagnostic module programmed as software, which is set up to volatile software that resets one or more of the energy supply, clock and processor, non-volatile memory, such as flash memory, when it is executed Memory, such as static random access memory (SRAM), and data connections between the aforementioned uses to check that they are working correctly.
- a software diagnostic module i.e. a diagnostic module programmed as software, which is set up to volatile software that resets one or more of the energy supply, clock and processor, non-volatile memory, such as flash memory, when it is executed Memory, such as static random access memory (SRAM), and data connections between the aforementioned uses to check that they are working correctly.
- the hardware diagnostic modules of the power processors are connected to one another and are set up to exchange function test results and to signal function errors to the respective other power processor.
- control device is set up and designed to select the other power processor in the event of a functional error in one of the power processors and to recognize objects and provide recognized objects on the basis of at least part of the data from the at least one sensor module.
- a diagnostic module designed as hardware is thus provided for the function of central hardware elements, which ensures a high level of reliability when diagnosing potential errors. Further diagnostics can be implemented using software modules without negatively affecting the overall diagnostic capability, since the correct functionality of the most important hardware components is monitored by the hardware diagnostic module. Overall, this provides a more flexible and more cost-effective control device that can be used in safety-critical driver assistance applications.
- the invention also relates to a driver assistance system for a motor vehicle, the driver assistance system comprising: a domain controller with a power processor and a security processor, the power processor being designed to provide object data received via a vehicle network relating to the surroundings of the motor vehicle in order to provide a driver assistance function process, and the security processor is designed and set up to check at least one processing step of the power processor for its correctness, as well as a control device that can be connected to the domain controller, the control device having a sensor interface via which the control device can receive at least one sensor module Data of the at least one sensor module can be connected, and comprises a power processor which is set up to recognize objects on the basis of the data of the at least one sensor module and to provide object data, and preferably i the control device comprises a safety processor for checking a processing status of the performance processor and / or a processing step of the performance processor for errors.
- the driver assistance system preferably comprises a control device according to the invention, as has been described above.
- FIG. 1 a perspective view of a control device according to the invention according to a first embodiment
- FIG. 2 a schematic representation of the first control device according to the embodiment of FIG. 1;
- FIG. 3 shows a diagram of data streams between in a vehicle network in which a control device according to the invention is integrated in order to implement a driver assistance system according to the invention
- FIG. 6 a schematic representation of a further control device according to the invention according to the embodiment of FIG. 1; 7: a schematic representation of a control device according to the invention in a further embodiment;
- FIG. 1 shows a first embodiment of a control device 10 according to the invention for a driver assistance system not shown in detail in the figure, e.g. a system for automated driving according to VDA Level 2 or higher, such as a Autobahnau topilot.
- the control device 10 comprises an electronic circuit which is arranged on one or more printed circuit boards. At least some of the electrical interfaces of the control unit 10 are arranged on the circuit board 14, namely a connec tion socket 13, a network socket 15 according to the RJ-45 standard and sensor module connections 17.
- the sensor module connections 17 use a coaxial connector system for coaxial cables. Further electrical interfaces are not shown, but can be provided by this embodiment, as can be seen from the further description.
- the circuit board 14 is arranged in a housing 12.
- the housing 12 is made of a thermally conductive material, for example from a metal such as aluminum, or a metal alloy such as an aluminum alloy.
- the housing 12 has openings through which the electrical interfaces of the control device 10 are accessible to the exterior of the housing.
- the control device 10 also has a cooling system 20.
- the cooling system 20 comprises cooling fins 21 formed in the housing 12, by means of which the surface of the housing 12 that is available for heat exchange is enlarged.
- the cooling system 20 also includes a cooling system carrier 22 which connects essential components of the cooling system 20 to one another.
- the cooling system carrier 22 defines the orientation and the distance between the fan 24 and the cooling fins 21.
- the cooling system carrier 22 also forms a ventilation duct which extends along the cooling fins 21.
- the fan 24 is operated electrically and its speed controllable.
- the cooling system 20 also includes one or more temperature sensors (not shown in detail) within the housing 12 of the control device 10, as well as a control module 28, which is shown, for example, in the example according to FIG.
- the control module 28 uses operating data from the control device 10 and the temperature sensors to determine a current and future cooling requirement and regulates the fan 24 in such a way that the cooling requirement is covered with the least possible noise.
- the cooling system carrier 22 and the housing 12 of the control unit 10 comprise a plug-in system that establishes a mechanical and an electrical connection between the cooling system carrier 22 and the control unit 10. This makes assembly easier.
- a pipe extends meandering along the cooling fins 21 within the space bounded by the cooling system carrier 22.
- a cooling fluid is driven through the pipe by means of an electrically operated pump to absorb heat and dissipate it to a heat exchanger.
- the heat exchanger can be located at a distance from the control device 10 and the pipeline can extend up to the heat exchanger.
- FIG. 2 shows a diagram of the functional components of the embodiment of the control device 10, the external view of which is shown in FIG. Via the connec tion socket 13, the control device 10 is supplied with electrical energy.
- the energy supply module 44 takes over basic energy supply functions such as polarity reversal protection, voltage and / or current stabilization, buffering, and distributes electrical energy received via the connection socket 13 within the control device 10 via the energy supply network 41.
- a sensor interface of the control device 10 is formed by sensor module connections 17 and a sensor communication module 70.
- the sensor communication module 70 is designed, for example, according to the Gigabit Multimedia Serial Link (GMSL) standard and the sensor module connections as a coaxial connector system. Alternatively, the sensor communication module 70 is designed according to the Ethernet standard and the sensor module connections as an RJ-45 connector system.
- the sensor interface comprises a respective GMSL sensor module connection for each of the sensor modules to be connected or an Ethernet connection for each sensor of a sensor module to be connected. In particular, each sensor module has two sensors.
- the control device 10 comprises three sensor module connections, two of which are wired with sensor modules of two sensors and one with a sensor module with a sensor.
- the sensor communication module 70 forwards data received from the sensor modules to a power processor 30, which is connected to the sensor communication module 70.
- the power processor 30 is supplied with energy by a processor supply 43, which in turn is fed from the energy supply network 41.
- the power processor 30 is also connected to a system interface which is implemented by a network module 72 and a network connection 15. Via the system interface, control device 10 can communicate data processed by power processor 30 to the driver assistance system and receive data from it.
- the power processor prepares the data received from the sensor modules and processes them with object recognition algorithms in order to detect objects in the vicinity of the vehicle that is equipped with the control unit 10.
- the control device 10 comprises a sensor voltage supply 40 which is fed from the energy supply network 41.
- the sensor modules can be supplied with energy from the control device 10 via a plug connection 42.
- the sensor voltage supply includes separate power electronics for a respective sensor of the sensor modules for the independent provision of a stable supply.
- the sensor voltage supply 40 is designed in such a way that at least 20%, in particular at least 30%, preferably 60% of the energy requirement of a sensor or at least 15% of the total energy requirement of the sensor modules are available as reserve energy.
- the sensor voltage supply 40 is also connected to a safety processor 50.
- the safety processor 50 is set up to enable the ASIL D standard to be implemented.
- the security processor 50 has at least one lockstep calculation kernel.
- the safety processor 50 is also set up to monitor the sensor voltage supply 40. Since an error or failure of data from the sensor modules can have serious consequences for automated driving, the monitoring of the sensor voltage supply 40 contributes to increasing the reliability of the control unit 10 and the driver assistance system. With the aid of the safety processor 50, input or output voltage profiles, corresponding current profiles, a temperature and / or other electrical operating parameters of the sensor voltage supply 40 can be recorded and evaluated in order to detect functional restrictions at an early stage.
- the safety processor 50 also monitors the processor supply 43 of the power processor 30, a processor supply 45 of the safety processor 50 itself and the energy supply 44. The entire energy supply of the control device 10 is thus monitored using the respective operating parameters so that possible problems can be identified immediately.
- the security processor 50 is also set up and designed to check the processing steps that the power processor 30 performs when processing data from control device 10, in particular when recognizing objects and forwarding object data.
- the safety processor 50 also takes on test and / or control tasks for the regulation 28 of the cooling system and for the network module 72 via which the power processor 30 communicates with the driver assistance system.
- the safety processor 50 is connected to a communication bus, such as a CAN bus, via a bus communication module 74 and a bus connection 19. of the motor vehicle connected via which data can be exchanged within the vehicle.
- a communication bus such as a CAN bus
- FIG. 3 shows the control device 10 according to the embodiment of FIGS. 1 and 2 or 5 to 7, which exchanges information with a domain control device via a vehicle network 200.
- the vehicle network 200 is represented by the entirety of the interacting communication means within the motor vehicle equipped with the control unit 10.
- the interface to the vehicle network 200 is formed by the network module 72 and the bus communication module 74 and the corresponding connections or sockets.
- the control unit 10 receives vehicle data 220 which are processed by the performance processor 30 when the objects are recognized, for example.
- the control unit 10 provides at least object data 210 via the vehicle network, which was determined from the data of the sensor modules.
- certain diagnostic data or control commands can be transmitted to other systems connected to the vehicle network 200, such as the domain control device 100, by means of the security processor 50.
- FIG. 4a shows a second embodiment of a control device according to the invention, which is essentially identical to the control device 10 of FIGS. 1 and 2. The same components are therefore provided with the same reference numbers.
- the control device 10 of FIG. 4a differs from the control device 10 of FIG. 2 only in that a pump control 29 is also provided.
- the pump control 29 comprises power electronics with a driver circuit for a brushless motor that drives a pump.
- the pump delivers a cleaning fluid to clean the sensor modules.
- the pump control 29 is connected to the energy supply network 41.
- the safety processor 50 also monitors the pump control 29.
- FIG. 4b A third embodiment of the control device 10 is shown in FIG. 4b, which is essentially identical to the control device 10 according to the embodiment of FIG. 4a. The same components are therefore provided with the same reference numbers.
- the control device 10 of FIG. 4b differs from the control device 10 of FIG. 4b in that it has a power coprocessor 31 in addition to the power processor 30.
- the power co-processor 31 is connected to the power processor 30 via a bus system such as PCI Express.
- the safety processor 50 only monitors the performance processor 30 directly and is only indirectly connected to the performance coprocessor 31 via the performance processor 30.
- the power copro processor 31 is provided with energy by a further separate processor supply 47.
- the processor supply 47 is monitored by the security processor 50.
- the power coprocessor 31 With the aid of the power coprocessor 31, a redundant computing system is provided for processing tasks that require high performance. The redundancy increases the processing security even further. As an alternative or in addition, the power coprocessor 31 is used in order to increase the overall computing power of the control device 10 at least temporarily.
- the embodiment with a power coprocessor 31 can also be combined with the adjustment according to FIG. 1, according to which the pump control 29 would then be omitted.
- FIG. 5 shows an exemplary embodiment of a driver assistance system 1 with three sensor modules 4, 6, 8.
- the sensor modules 4, 6, 8 each have up to 2 sensors.
- the sensor modules 4, 6, 8 are connected to a sensor interface of a control device 10 via communication lines.
- the control device 10 can assume any of the embodiments described above.
- the sensor modules 4, 6, 8 are supplied with energy via the sensor voltage supply 40 of the control device 10.
- the control unit 10 always includes a power processor 30, which is designed to recognize objects from the data of the sensor modules, as well as a security processor 50, which checks the power processor 30 and the sensor voltage supply 40 with regard to their function and / or reliability.
- the control device 10 is connected to a domain control device 100 on which the actual driver assistance function is implemented.
- the domain control device 100 has a performance processor 130 which carries out calculations for the assistance function and a safety processor 150 which at least partially verifies the calculations of the performance processor 130.
- a second power processor 31 is provided in addition to the power processor 30.
- the power coprocessor 31 is connected to the power processor 30 via two data transmission channels.
- a data transmission channel is formed by bundling four transmission channels according to the Ethernet standard.
- an Ethernet switch is integrated in each of the two performance processors.
- Another, independent data transmission channel is implemented using PCI Express technology.
- the security processor 50 only monitors the performance processor 30 directly and is only indirectly connected to the performance processor 31 via the performance processor 30.
- the power processor 31 is supplied by a further separate processor supply 47 with energy.
- the processor supply 47 is monitored by the security processor 50.
- a redundant computing system is provided for processing tasks that require high performance.
- the processing security is increased again by the redundancy.
- the power processor 31 is used in order to increase the overall computing power of the control device 10 at least temporarily.
- the sensor communication module 70 forwards data received from the sensor modules to a power processor 30, which is connected to the sensor communication module 70.
- the power processor 30 is supplied with energy by a processor supply 43, which in turn is fed from the energy supply network 41.
- the power processor 30 is also connected to a system interface which is implemented by a network module 72 and a network connection 15. Via the system interface, control device 10 can communicate data processed by power processor 30 to the driver assistance system and receive data from it.
- the power processors 30, 31 prepare the data received from the sensor modules and process them with object recognition algorithms in order to detect objects in the vicinity of the vehicle that is equipped with the control unit 10.
- the control device 10 comprises a sensor voltage supply 40 which is fed from the energy supply network 41.
- the sensor modules can be supplied with energy from the control device 10 via a plug connection 42.
- the Sensor voltage supply comprises separate power electronics for a respective sensor of the sensor modules for the independent provision of a stable supply.
- the sensor voltage supply 40 is designed in such a way that at least 20%, in particular at least 30%, preferably 60% of the energy requirement of a sensor or at least 15% of the total energy requirement of the sensor modules is available as reserve energy.
- the sensor voltage supply 40 is also connected to a safety processor 50.
- the safety processor 50 is set up to enable the ASIL D standard to be implemented.
- the security processor 50 has at least one lockstep calculation kernel.
- the safety processor 50 is also set up to monitor the sensor voltage supply 40. Since an error or failure of data from the sensor modules can have serious consequences for automated driving, the monitoring of the sensor voltage supply 40 contributes to increasing the reliability of the control unit 10 and the driver assistance system. With the aid of the safety processor 50, input or output voltage profiles, corresponding current profiles, a temperature and / or other electrical operating parameters of the sensor voltage supply 40 can be recorded and evaluated in order to detect functional restrictions at an early stage.
- the security processor 50 also monitors the processor supplies 43,
- the security processor 50 is also set up and designed to check the processing steps that the performance processors 30, 31 carry out when processing data of the control device 10, in particular when recognizing objects and forwarding object data.
- the safety processor 50 also takes on test and / or control tasks for the regulation 28 of the cooling system and for the network module 72 via which the power processor 30 communicates with the driver assistance system.
- the safety processor 50 is connected via a bus communication module 74 and a bus connection 19 to a communication bus, such as a CAN bus, of the motor vehicle, via which data can be exchanged within the vehicle.
- FIG. 7 shows a further embodiment of a control device according to the invention, which is essentially identical to the control device 10 of FIGS. 1 and 6. The same components are therefore provided with the same reference numbers.
- the control device 10 of FIG. 7 differs from the control device 10 of FIG. 6 only in that a pump control 29 is also provided.
- the pump control 29 comprises power electronics with a driver circuit for a brushless motor that drives a pump.
- the pump delivers a cleaning fluid to clean the sensor modules.
- the pump control 29 is connected to the energy supply network 41.
- the safety processor 50 also monitors the pump control 29.
- FIG. 8 shows a further embodiment of a control device 110 according to the invention, which essentially corresponds to the control device 10 of FIGS. 2 and 4a.
- the same components with the same functionality are therefore provided with the same reference numbers.
- the control unit 110 differs from the previously mentioned control units by a power processor 130 and a power processor 150, which have two different configuration modes. In a safe operating mode, one of the performance processors 130, 150 is available as a reserve in the event that the other one of the performance processors 130, 150 should fail or calculate incorrectly. In this safe operating mode, a power processor 130, 150 can at any time perform the tasks of the other power processor 130,
- the control device 110 is designed in such a way that both power processors 130, 150 receive the same data from the sensor module and can provide recognized objects via identically designed interfaces.
- the two power processors 130, 150 use at least some of the same interfaces as the bus connection 19.
- the control unit 110 can also be configured for a high-performance mode, in which the performance processors 130, 150 divide the calculations for the detection of the objects on the basis of the data from the at least one sensor module 4, 6, 8.
- a respective power processor 130, 150 selects part of the data of the at least one sensor module 4, 6, 8, which are received via the sensor module connections 17, and works out object recognition algorithms on a respective part of the data.
- this high-performance operating mode a higher number of object recognition calculations per time are possible than in the safe operating mode.
- the failure or error of a performance processor 130, 150 is detected in the control unit 110 by diagnostic units 131, 151 of the respective performance processors 130,
- the diagnostic units 131, 151 are each designed as hardware, for example as a reserved processor core, separate processor or FPGA, which processes predefined diagnostic tasks.
- the diagnostic units 131, 151 check the operational readiness and correct functionality of an SRAM, a flash memory, one or more processor cores usable for applications, a processor clock, a temperature and / or the energy supply 43, 45 of the respective power processor 130, 150 , 151 can be designed in each case or together in such a way that they implement a lockstep method.
- Diagnostic software is also executed on the performance processors 130, 150, which realizes the further diagnostic functions for the performance processors 131, 151 and the control unit 110, for example checks whether certain software modules are called up and / or provide plausible results.
- a software diagnostic unit is also provided on the control device 110, which can take over further diagnostic functions without negatively influencing the safety of the control device 110, since this runs on the hardware checked by the hardware diagnostic unit.
- Reference driver assistance system 6, 8 sensor modules 0 control unit 2 housing 3 connection socket 4 electronic circuit board 5 network socket 7 sensor module connections 9 bus connection 0 cooling system 1 cooling fins 2 cooling system carrier 4 fan 8 control 9 pump control 0, 130 power processor 1 power coprocessor 0 sensor power supply 1 power supply network 2 plug connection 3 processor supply 4 power supply 5 Processor supply 0, 150 Safety processor 0 Sensor communication module 2 Network module 4 Bus communication module 00 Domain control device 31, 151 Diagnostic unit 00 Vehicle network 10 Object data 220 vehicle data
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Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019220382.5A DE102019220382A1 (de) | 2019-12-20 | 2019-12-20 | Steuergerät für ein Fahrerassistenzsystem und Fahrerassistenzsystem |
| DE102019220388.4A DE102019220388A1 (de) | 2019-12-20 | 2019-12-20 | Steuergerät für ein Fahrerassistenzsystem und Fahrerassistenzsystem |
| PCT/EP2020/085992 WO2021122460A2 (de) | 2019-12-20 | 2020-12-14 | Steuergerät für ein fahrerassistenzsystem und fahrerassistenzsystem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4078434A2 true EP4078434A2 (de) | 2022-10-26 |
Family
ID=74095809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20829848.9A Withdrawn EP4078434A2 (de) | 2019-12-20 | 2020-12-14 | Steuergerät für ein fahrerassistenzsystem und fahrerassistenzsystem |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US12332726B2 (de) |
| EP (1) | EP4078434A2 (de) |
| WO (1) | WO2021122460A2 (de) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230422399A1 (en) * | 2022-06-24 | 2023-12-28 | Wolfspeed, Inc. | Methods and systems for implementing a modular platform implementing active devices |
| JP7764819B2 (ja) * | 2022-09-01 | 2025-11-06 | トヨタ自動車株式会社 | 電源制御装置 |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110010041A1 (en) * | 2003-01-30 | 2011-01-13 | Smr Patents S.A.R.L. | Software for an automotive hazardous detection and information system |
| US20070277023A1 (en) * | 2003-06-24 | 2007-11-29 | Reinhard Weiberle | Method For Switching Over Between At Least Two Operating Modes Of A Processor Unit, As Well Corresponding Processor Unit |
| DE102004018398A1 (de) | 2004-04-16 | 2005-11-03 | Man Nutzfahrzeuge Ag | Verfahren und Vorrichtung zur Versorgung eines Sensors mit einer geregelten Sensorversorgungsspannung |
| WO2013043661A1 (en) * | 2011-09-21 | 2013-03-28 | Magna Electronics, Inc. | Vehicle vision system using image data transmission and power supply via a coaxial cable |
| KR101822892B1 (ko) | 2014-12-10 | 2018-01-29 | 엘지전자 주식회사 | 차량 운전 보조 장치 및 차량 운전 보조 장치의 동작 방법 |
| US11378954B2 (en) * | 2016-06-28 | 2022-07-05 | Faraday&Future Inc. | Multi-processor SoC system |
| US9940761B2 (en) * | 2016-08-02 | 2018-04-10 | International Business Machines Corporation | Self-driving vehicle sensor fault remediation |
| US20180043633A1 (en) | 2016-08-10 | 2018-02-15 | City University Of Hong Kong | System for printing an object and a method for printing an object |
| DE102018104357A1 (de) | 2018-02-27 | 2019-08-29 | Valeo Schalter Und Sensoren Gmbh | Schaltungsanordnung mit Spannungsüberwachung eines Sensor-Schaltkreises |
| GB2610938B (en) * | 2018-10-30 | 2023-09-06 | Motional Ad Llc | Redundancy in autonomous vehicles |
| US11890564B2 (en) * | 2018-11-28 | 2024-02-06 | Baidu Usa Llc | Tool-less air filter attaching mechanism for planning and control system of autonomous driving vehicles |
| KR20200081530A (ko) * | 2018-12-19 | 2020-07-08 | 주식회사 만도 | 자율 주행 차량의 안전 제어 시스템 및 방법 |
| US20230061577A1 (en) * | 2021-08-31 | 2023-03-02 | Micron Technology, Inc. | Vehicle-based safety processor |
| KR102418566B1 (ko) * | 2021-12-22 | 2022-07-08 | 재단법인 지능형자동차부품진흥원 | 엣지 인프라 기반의 자율 주행 안전 제어 시스템 및 방법 |
-
2020
- 2020-12-14 EP EP20829848.9A patent/EP4078434A2/de not_active Withdrawn
- 2020-12-14 WO PCT/EP2020/085992 patent/WO2021122460A2/de not_active Ceased
- 2020-12-14 US US17/786,815 patent/US12332726B2/en active Active
Also Published As
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|---|---|
| US12332726B2 (en) | 2025-06-17 |
| WO2021122460A2 (de) | 2021-06-24 |
| US20230028289A1 (en) | 2023-01-26 |
| WO2021122460A3 (de) | 2021-08-12 |
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