WO2022238022A1 - Verfahren zum erkennen einer manipulation eines analogen signals durch ein steuergerät eines fahrzeugs, computerlesbares medium, system, und fahrzeug - Google Patents
Verfahren zum erkennen einer manipulation eines analogen signals durch ein steuergerät eines fahrzeugs, computerlesbares medium, system, und fahrzeug Download PDFInfo
- Publication number
- WO2022238022A1 WO2022238022A1 PCT/EP2022/053557 EP2022053557W WO2022238022A1 WO 2022238022 A1 WO2022238022 A1 WO 2022238022A1 EP 2022053557 W EP2022053557 W EP 2022053557W WO 2022238022 A1 WO2022238022 A1 WO 2022238022A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vehicle
- analog signal
- messages
- manipulation
- gradient
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 42
- 230000001133 acceleration Effects 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/02—Registering or indicating driving, working, idle, or waiting time only
- G07C5/04—Registering or indicating driving, working, idle, or waiting time only using counting means or digital clocks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
- H04L12/40013—Details regarding a bus controller
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
- H04L12/40032—Details regarding a bus interface enhancer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40267—Bus for use in transportation systems
- H04L2012/40273—Bus for use in transportation systems the transportation system being a vehicle
Definitions
- the invention relates to a method for detecting manipulation of an analog signal by a control unit of a vehicle.
- the invention further relates to a computer-readable medium for detecting manipulation of an analog signal by a control unit of a vehicle, a system for detecting manipulation of an analog signal by a control unit of a vehicle, and a vehicle comprising the system.
- Vehicle control units communicate with one another via bus systems.
- a control unit of the bus system can receive and process messages from the bus system. It is often analogue content that is received by a control unit via the bus system. The analog content is currently not checked by the receiving control unit.
- the invention is characterized by a method for detecting manipulation of an analog signal by a control unit of a vehicle.
- the method can be a computer-implemented method and/or a controller-implemented method.
- the analog signal can be an analog content of a message of a bus system of a vehicle.
- the analog signal is preferably transmitted digitally via the vehicle's bus system.
- the control device is preferably a receiver of the analog signal.
- the vehicle can be an automobile.
- the method includes receiving a sequence of messages from a bus system by the control unit of the vehicle, with a message in the sequence of messages having a value of the analog 2
- the sequence of messages includes signals.
- the sequence of messages includes at least two messages.
- the sequence of messages preferably comprises more than two messages.
- the bus system can be a CAN bus.
- the method includes storing the sequence of messages in a buffer of the control unit.
- the temporary memory can be a volatile or non-volatile memory of the vehicle's control unit.
- the buffer can store at least two messages of the sequence of messages, a current message and a message preceding the current message. Additionally or alternatively, the buffer store can store a predetermined number of messages in the sequence of messages. Additionally or alternatively, the buffer store can store messages from the sequence of messages for a predetermined time interval.
- the method includes determining a time profile of the analog signal based on the stored sequence of messages.
- the method also includes calculating a gradient for the determined time profile of the analog signal and checking the calculated gradient for plausibility in order to detect the manipulation of the analog signal.
- the plausibility check of the calculated gradient can include checking the gradient with regard to a predefined value range and/or a predefined set of values and/or a predefined progression over time.
- the method includes providing an alarm message from the control unit to a vehicle-external server if the gradient, in particular the calculated gradient, is not plausible.
- the calculated gradient may not be plausible, for example, if a maximum possible value is exceeded and/or there is a deviation from a predetermined typical profile of the gradient.
- the method can efficiently detect manipulation of an analog signal or an analog content of a message by subjecting the gradient of the analog signal to a plausibility check.
- a control unit as the recipient of a message, can efficiently detect manipulation of a message or a sequence of messages and transmit the manipulation to a server external to the vehicle. Manipulations of analogue signals from a vehicle can thus be quickly detected.
- the sequence of messages can include at least two messages.
- the plausibility check of the calculated gradient for detecting the manipulation of the analog signal can include determining a permissible value range of the gradient of the analog signal and a plausibility check of the calculated gradient with regard to the determined, permissible value range. This allows manipulation of an analog signal to be detected efficiently.
- the permissible value range can be fixed.
- the permissible value range can be defined by one or more physical variables.
- the permissible range of values can be learned by the control device. This allows the permissible range of values to be determined dynamically.
- the permissible value range can be calculated and/or learned using one or more vehicle-specific physical parameters. This allows the permissible range of values to be determined efficiently.
- the analog signal can include a distance, an acceleration, a deceleration, a speed, a torque, an engine speed, a charging current and/or a discharging current.
- the invention features a computer-readable medium for detecting a manipulation of an analog signal by a controller of a vehicle, the computer-readable medium comprising instructions which, when executed on a computer or a controller, carry out the method described above.
- the invention is characterized by a system for detecting manipulation of an analog signal by a control unit of a vehicle, the system being designed to carry out the method described above. 4
- the invention is characterized by a vehicle comprising the system described above for detecting manipulation of an analog signal by a control unit of a vehicle.
- FIG. 1 schematically shows an exemplary method for detecting a manipulation of an analog signal by a control unit of a vehicle
- FIG. 2 shows an exemplary system for detecting manipulation of an analog signal by a control unit of a vehicle.
- the method 100 shows in detail a method 100 for detecting manipulation of an analog signal by a control device of a vehicle.
- the method 100 is preferably executed on the control unit as the recipient of the analog signal.
- the method 100 receives 102 a sequence of messages from a bus system by the control unit of the vehicle, wherein a message in the sequence of messages includes a value of the analog signal.
- the method can store the sequence of messages in an intermediate memory of the control unit 104.
- Method 100 can also determine a time profile of the analog signal based on the stored sequence of messages 106 and calculate a gradient for the determined time profile of the analog signal 108
- the method 100 can check the calculated gradient for plausibility 110 in order to detect the manipulation of the analog signal, and provide an alarm message from the control device to a vehicle-external server 112 if the gradient is not plausible. 5
- the plausibility check 110 of the calculated gradient can take place with regard to a typical profile and/or a typical value range of the gradient.
- the typical profile of the gradient and/or the typical value range can be permanently specified.
- the typical course of the gradient and/or the typical value range of the gradient can be specified during a configuration of the control device.
- the typical course of the gradient and/or the typical value range of the gradient can be determined dynamically.
- the typical profile of the gradient and/or the typical value range can be learned using a learning method. Known learning methods can be used for the learning, which are trained, for example, during testing of the vehicle and can check the calculated gradient for plausibility with regard to the typical profile and/or the typical value range of the gradient.
- the analog signal can be a speed signal of the vehicle, for example.
- the speed signal of the vehicle can only increase a predetermined maximum value depending on a maximum torque of the vehicle per unit of time.
- the gradient of the speed signal can check the method for plausibility with regard to the predefined, maximum value of the increase in the speed signal. If the increase in the speed signal exceeds the predetermined or learned maximum value, the method 100 can detect manipulation of the speed signal and transmit an alarm message to the vehicle-external server.
- the method 100 can advantageously check the plausibility of the message or the sequence of messages independently of the sender of the message. In this way, manipulated analog content or analog signals of messages from control devices that are also added to the bus system can be efficiently recognized by the control device as the recipient of the messages.
- FIG. 2 shows an exemplary system 200 for detecting a manipulation of an analog signal by a control unit of a vehicle.
- a control device 202 can be communicatively connected to a bus system 204 .
- Control unit 202 can receive a sequence of messages 206 via bus system 204 .
- the sequence of messages can be buffered in a memory 208 .
- the control device 202 can read out the sequence of messages from the memory 208 and determine a time profile 210 of the values of an analog signal from the sequence of messages.
- the control unit 202 6 calculate a gradient 212 for the ascertained time profile of the analog signal.
- the control device can determine a time profile 214 of the gradient and check the time profile of the gradient for plausibility. If the gradient is not plausible, the control unit provides an alarm message 216 to a vehicle-external server.
- the method or the system can efficiently check analog content of a sequence of messages for plausibility, so that manipulation of an analog content of a message can be detected.
- Analogous contents of a message from a bus system can only change by a certain amount per unit of time due to technical and/or physical restrictions.
- By checking the gradient of the analog content of the sequence of messages for plausibility it can be checked whether the change in the analog content is within permissible limits or exceeds the permissible limits. Exceeding the permissible limits can indicate manipulation of the analogue content of a message.
- By transmitting an alarm message to a vehicle-external server manipulation of the messages can be detected quickly.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Small-Scale Networks (AREA)
- Testing And Monitoring For Control Systems (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/553,991 US20240185647A1 (en) | 2021-05-11 | 2022-02-15 | Method for Identifying a Manipulation of an Analogue Signal by Means of a Control Device of a Vehicle, Computer-Readable Medium, System, and Vehicle |
CN202280020786.6A CN117083838A (zh) | 2021-05-11 | 2022-02-15 | 用于通过车辆的控制装置识别对模拟信号的篡改的方法、计算机可读的介质、系统和车辆 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021112330.5A DE102021112330A1 (de) | 2021-05-11 | 2021-05-11 | Verfahren zum Erkennen einer Manipulation eines analogen Signals durch ein Steuergerät eines Fahrzeugs, computerlesbares Medium, System, und Fahrzeug |
DE102021112330.5 | 2021-05-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022238022A1 true WO2022238022A1 (de) | 2022-11-17 |
Family
ID=80739093
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/053557 WO2022238022A1 (de) | 2021-05-11 | 2022-02-15 | Verfahren zum erkennen einer manipulation eines analogen signals durch ein steuergerät eines fahrzeugs, computerlesbares medium, system, und fahrzeug |
Country Status (4)
Country | Link |
---|---|
US (1) | US20240185647A1 (de) |
CN (1) | CN117083838A (de) |
DE (1) | DE102021112330A1 (de) |
WO (1) | WO2022238022A1 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013222789A1 (de) * | 2013-11-08 | 2015-05-13 | Robert Bosch Gmbh | Teilnehmerstation für ein Bussystem und Verfahren zur Reduzierung von leitungsgebundenen Emissionen in einem Bussystem |
WO2019229034A1 (en) * | 2018-05-31 | 2019-12-05 | Iee International Electronics & Engineering S.A. | Control system for a vehicle |
US20200294401A1 (en) * | 2017-09-04 | 2020-09-17 | Nng Software Developing And Commercial Llc. | A Method and Apparatus for Collecting and Using Sensor Data from a Vehicle |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10308396B4 (de) | 2003-02-27 | 2014-12-04 | Robert Bosch Gmbh | Verfahren zum Plausiblilisieren eines Sensorsignals |
DE102018218902B4 (de) | 2018-11-06 | 2020-06-18 | Zf Friedrichshafen Ag | Sicherheitseinrichtung für Bussysteme in Fahrzeugen |
-
2021
- 2021-05-11 DE DE102021112330.5A patent/DE102021112330A1/de active Pending
-
2022
- 2022-02-15 US US18/553,991 patent/US20240185647A1/en active Pending
- 2022-02-15 CN CN202280020786.6A patent/CN117083838A/zh active Pending
- 2022-02-15 WO PCT/EP2022/053557 patent/WO2022238022A1/de active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013222789A1 (de) * | 2013-11-08 | 2015-05-13 | Robert Bosch Gmbh | Teilnehmerstation für ein Bussystem und Verfahren zur Reduzierung von leitungsgebundenen Emissionen in einem Bussystem |
US20200294401A1 (en) * | 2017-09-04 | 2020-09-17 | Nng Software Developing And Commercial Llc. | A Method and Apparatus for Collecting and Using Sensor Data from a Vehicle |
WO2019229034A1 (en) * | 2018-05-31 | 2019-12-05 | Iee International Electronics & Engineering S.A. | Control system for a vehicle |
Also Published As
Publication number | Publication date |
---|---|
US20240185647A1 (en) | 2024-06-06 |
CN117083838A (zh) | 2023-11-17 |
DE102021112330A1 (de) | 2022-11-17 |
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