EP2458563A2 - Remote diagnosis of vehicles - Google Patents
Remote diagnosis of vehicles Download PDFInfo
- Publication number
- EP2458563A2 EP2458563A2 EP11188159A EP11188159A EP2458563A2 EP 2458563 A2 EP2458563 A2 EP 2458563A2 EP 11188159 A EP11188159 A EP 11188159A EP 11188159 A EP11188159 A EP 11188159A EP 2458563 A2 EP2458563 A2 EP 2458563A2
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- EP
- European Patent Office
- Prior art keywords
- diagnosis
- command
- vehicle
- central processor
- processor resource
- 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.)
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- 238000004171 remote diagnosis Methods 0.000 title description 7
- 238000003745 diagnosis Methods 0.000 claims abstract description 91
- 230000004044 response Effects 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims description 32
- 230000003993 interaction Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000006870 function Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 238000007429 general method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000006399 behavior Effects 0.000 description 1
- 238000002405 diagnostic procedure Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Classifications
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- 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
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/0808—Diagnosing performance data
-
- 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
-
- 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
- G07C5/008—Registering or indicating the working of vehicles communicating information to a remotely located station
Definitions
- the present invention relates generally to solutions for fault diagnosis of vehicles.
- the invention relates to a system according to the preamble of claim 1 and a method according to the preamble of claim 8.
- the invention relates also to a computer programme according to claim 14 and a computer-readable medium according to claim 15.
- the object of the present invention is therefore to propose a solution which solves the above problems and therefore makes safe remote diagnosis of motor vehicles possible both as regards control of their programmable units and as regards the data integrity of those units.
- the object is achieved by the system described in the introduction whereby the central processor resource includes a superordinate diagnosis unit adapted to generating diagnosis commands in the form of control instructions.
- the local module is itself adapted to exclusively executing diagnosis commands in response to said control instructions from the central processor resource.
- This system is advantageous in that the vehicle can thus only be remote-diagnosed from an authorised central processor resource. At the same time, it is of course also possible at a workshop to connect diagnosis equipment directly to the vehicle's internal network in order to conduct a conventional diagnosis.
- the local module is adapted, before executing a diagnosis command, to checking whether it is associated with one or more conditions relating to operating the vehicle, e.g. the brakes not being activated.
- the local module is adapted to only executing diagnosis commands if all of the associated operation-related conditions are fulfilled. This reduces the risk that the proposed remote diagnosis might put at risk, or interfere with, important vehicle functions during operation of the vehicle.
- the local module is also configured to monitor, while executing a diagnosis command, any conditions associated with it. If at least one of said associated conditions is found not to be fulfilled while it is executing the diagnosis command, the local module is configured to cease executing it. The risk of interference with important vehicle functions can thus be further reduced.
- the local module is configured to resume execution of the diagnosis command if, after a cessation, all of the conditions associated with it are again found to be fulfilled.
- the risk of potential interference with important vehicle functions can thus be minimised while at the same time making a remote diagnosis take relatively little time.
- a set of parameters for the conditions relating to operation of the vehicle is supposed to be defined by the superordinate diagnosis unit. This means that the complexity of the local module can be kept low and the superordinate diagnosis unit can dynamically indicate which magnitudes have to be tested for a certain condition and within what limit values the respective condition is regarded as fulfilled.
- the superordinate diagnosis unit is configured to issue diagnosis commands iteratively by generating a first diagnosis command, receiving at least one command response thereto and generating on the basis thereof at least a second diagnosis command, and so on.
- a typical diagnosis situation does in fact entail repeated questions before a proper diagnosis can be arrived at. To this end, it is normal to determine a suitable follow-up question to at least one previous diagnosis command.
- the local module comprises local software adapted to controlling the local module's interaction with the vehicle's internal network and with the superordinate diagnosis unit.
- the local software is also configured to be updatable from the central processor resource. This means that the whole diagnosis process can be adjusted and controlled very effectively from the central processor resource.
- the object is achieved by the method described in the introduction whereby the central processor resource is supposed to include a superordinate diagnosis unit adapted to generating diagnosis commands in the form of control instructions.
- the method comprises execution of diagnosis commands in the vehicle exclusively in response to control instructions from the central processor resource.
- the object is achieved by a computer programme which can be directly downloaded to the internal memory of a computer and comprises software for controlling the steps according to the method proposed above when said programme is run on a computer.
- the object is achieved by a computer-readable medium which has stored on it a programme adapted to enabling a computer to control the steps according to the method proposed above.
- the system comprises a central processor resource 100 and at least one vehicle 180.
- the central processor resource 100 is configured to communicate wirelessly with a designated vehicle 180 via at least one network, such as Internet and a mobile communication network 160 (e.g. represented by a WLAN, GSM network or 3G network).
- the central processor resource 100 includes a superordinate diagnosis unit 110 adapted to generating diagnosis commands DC in the form of control instructions CI.
- diagnostic information may for example comprise information about fault codes from control units (e.g. ECUs) of the vehicle 180, statistics about how the vehicle 180 has been used during a historical period, and current and historical values for sensors and actuators in the vehicle's electrical system.
- control units e.g. ECUs
- control units in the vehicle 180 contain many different types of information (in varying formats), the commands needed for controlling different control units (and versions of them) generally differ considerably from one another.
- a relatively advanced logic and knowledge database is therefore required to be able to decide on the basis of the configuration of a given vehicle 180 what are appropriate diagnosis commands DC/control instructions Cl for it.
- this functionality is located in the central processor resource 100.
- each vehicle 180 is equipped with a local module 182.
- the local module 182 is adapted to exclusively executing diagnosis commands DC in the form of control instructions CI from the central processor resource 100. Assurance is thus provided that only authorised control means have access to a network 184 in the vehicle 180 and to the units connected thereto, here exemplified by the unit marked 186.
- the local module 182 causes execution of at least one diagnosis command DC concerning at least one unit 186 which is connected to the internal network 184 of the vehicle 180. Said at least one diagnosis command DC itself results in at least one command response R which is returned to the central processor resource 100 via the local module 182 and the network/networks 150, 160.
- the superordinate diagnosis unit 110 is with advantage configured to issue diagnosis commands DC iteratively depending on the results arising from the questions posed/diagnosis commands DC issued. This means that a first diagnosis command DC is produced and at least one first command response R is received. On the basis of said at least one first command response R, the superordinate diagnosis unit 110 then issues at least a second diagnosis command DC which results in at least one second command response R, and so on.
- Producing a diagnosis command DC may involve substantial parts of the resources of a control unit. If a diagnosis procedure is conducted during operation of the vehicle 180, there is therefore risk that the procedure might put at risk, or at least interfere with, important vehicle functions. According to an embodiment of the invention, a given diagnosis command DC may therefore be associated with one or more conditions relating to operation of the vehicle 180. Examples of such conditions are the brakes not being activated, the vehicle's speed being below a certain value and a power take-off not being activated. In this case the local module 182 only executes a diagnosis command DC if all of the operation-related conditions associated with it are fulfilled.
- the local module 182 is adapted, before executing a diagnosis command DC, to checking whether it is associated with one or more conditions relating to operation of the vehicle 180, and to only executing it if all of the operation-related conditions associated with it are fulfilled.
- the local module 182 is further configured to apply the procedure of monitoring, during execution of a diagnosis command DC, any conditions associated with it, and of ceasing to execute it if one or more of said associated conditions is found not to be fulfilled.
- the local module 182 is with advantage configured to resume executing a diagnosis command DC as soon as all of the conditions associated with it are again found to be fulfilled. Depending on the amount of time its completion takes and whether said conditions are fulfilled and not fulfilled, the execution of a given diagnosis command may of course be halted and resumed more than once.
- each condition relating to operation of the vehicle 180 for deciding whether execution of a diagnosis command DC is allowed is defined by one or more parameters, e.g. an indicated speed range, no activation of manually initiated braking, no activation of the power take-off of the vehicle 180 or a requirement for the steering wheel angle deflection to be within an indicated range.
- the set of parameters which indicate respective conditions relating to operation of the vehicle 180 be defined by the superordinate diagnosis unit 110.
- the local module 182 contains local software adapted to controlling its interaction with the network 184 in the vehicle 180 and with the superordinate diagnosis unit 110.
- the local software is also configured to be updatable from the central processor resource 100 so that the diagnostic process can be controlled and adjusted effectively from the central processor resource.
- the central processor resource 100 be configured to function in accordance with the instructions in central software which is executed in the processor resource 100. It is therefore advantageous if the central processor resource 100 includes, or is in some other way linked to, a memory module M containing software which, when executed in the central processor resource 100, causes the procedure described above to be applied.
- a first step 210 checks whether a diagnosis command has been received in the local module of a vehicle. If such is the case, a step 220 follows, otherwise the procedure loops back and comes to a halt at step 210. Step 220 checks whether a diagnosis command received consists exclusively of control instructions from the central processor resource. If such is the case, a step 230 follows, otherwise the procedure loops back to step 210. Step 230 executes the diagnosis command defined by the control instructions, whereupon a corresponding command response is generated. A step 240 then returns the command response to the central processor resource, followed by the procedure looping back to step 210.
- Figure 3 is a flowchart illustrating a preferred embodiment of the proposed method.
- two initial steps 210 and 220 check whether a diagnosis command has been received and whether it is based solely on control instructions from the central processor resource. If such is the case, the next step 310 checks whether the diagnosis command received is associated with one or more conditions relating to operation of the vehicle. If it is found that the command is not associated with any such conditions, this finding is followed by the executing step and reporting step 230 and 240 respectively as above, after which the procedure loops back to step 210.
- step 310 is followed by a step 320 which checks whether said condition/s is/are fulfilled. If one or more conditions are not fulfilled, the procedure loops back and comes to a halt at 320. Otherwise step 230 follows.
- the method steps described with reference to Figures 2 and 3 may be controlled by means of programmed computer apparatus.
- the invention extends to computer programmes, especially computer programmes on or in a carrier, suited to practically implementing the invention.
- the programme may be in the form of source code, object code, a code intermediate between source and object code, e.g. in partly compiled form, or in any other form suitable for use in implementing the process according to the invention.
- the carrier may be any entity or device capable of carrying the programme.
- the carrier may comprise a storage medium such as a flash memory, an ROM (read only memory), e.g.
- the carrier may also be a transmitting carrier such as an electrical or optical signal which can be conveyed by an electrical or optical cable or via radio or in some other way.
- the carrier may take the form of such a cable, device or means.
- the carrier may be an integrated circuit in which the programme is embedded and which is adapted to conducting, or to being used in conducting, the relevant processes.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Regulating Braking Force (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Selective Calling Equipment (AREA)
- Safety Devices In Control Systems (AREA)
Abstract
Description
- The present invention relates generally to solutions for fault diagnosis of vehicles. In particular, the invention relates to a system according to the preamble of claim 1 and a method according to the preamble of claim 8. The invention relates also to a computer programme according to claim 14 and a computer-readable medium according to claim 15.
- It is generally preferred to minimise the time which a motor vehicle spends at workshops for servicing or repairs. This applies in particular to commercial vehicles, e.g. trucks and buses, for which a maximum degree of effective utilisation is desired. There are therefore various current solutions for remotely identifying and, wherever possible, remedying faults which occur on vehicles. Even if a fault cannot be remedied locally, it is most commonly advantageous if it can be identified before the vehicle reaches the workshop or before a repairer reaches the vehicle. This makes it possible to prepare for the repair, leading to minimisation of outage time.
- Specifications
DE 10 2006 044 896 ,JP 2009-150798 US 7,668,643 ,US 2005/0251304 ,US 2006/0122748 andUS 2008/0183484 describe various solutions for remote diagnosis of motor vehicles which involve a central server connected to a local network in the vehicle. - However, none of the above specifications describes a satisfactorily safe remote diagnosis. A problem arising from the possibility of remote access to descriptions of a vehicle's functionality, represented for example by so-called ECUs (electronic control units), is that it makes it possible for unauthorised persons to study and manipulate vital vehicle parameters. This might lead to safety consequences concerning the vehicle's behaviour in critical situations. Moreover, competing vehicle manufacturers and business operators who provide repair and maintenance services might be afforded access to data which the vehicle manufacturer wishes to keep secret.
- The object of the present invention is therefore to propose a solution which solves the above problems and therefore makes safe remote diagnosis of motor vehicles possible both as regards control of their programmable units and as regards the data integrity of those units.
- According to an aspect of the invention, the object is achieved by the system described in the introduction whereby the central processor resource includes a superordinate diagnosis unit adapted to generating diagnosis commands in the form of control instructions. The local module is itself adapted to exclusively executing diagnosis commands in response to said control instructions from the central processor resource.
- This system is advantageous in that the vehicle can thus only be remote-diagnosed from an authorised central processor resource. At the same time, it is of course also possible at a workshop to connect diagnosis equipment directly to the vehicle's internal network in order to conduct a conventional diagnosis.
- According to an embodiment of this aspect of the invention, the local module is adapted, before executing a diagnosis command, to checking whether it is associated with one or more conditions relating to operating the vehicle, e.g. the brakes not being activated. The local module is adapted to only executing diagnosis commands if all of the associated operation-related conditions are fulfilled. This reduces the risk that the proposed remote diagnosis might put at risk, or interfere with, important vehicle functions during operation of the vehicle.
- According to another embodiment of this aspect of the invention, the local module is also configured to monitor, while executing a diagnosis command, any conditions associated with it. If at least one of said associated conditions is found not to be fulfilled while it is executing the diagnosis command, the local module is configured to cease executing it. The risk of interference with important vehicle functions can thus be further reduced.
- According to yet another embodiment of this aspect of the invention, the local module is configured to resume execution of the diagnosis command if, after a cessation, all of the conditions associated with it are again found to be fulfilled. The risk of potential interference with important vehicle functions can thus be minimised while at the same time making a remote diagnosis take relatively little time.
- According to a further embodiment of this aspect of the invention, a set of parameters for the conditions relating to operation of the vehicle is supposed to be defined by the superordinate diagnosis unit. This means that the complexity of the local module can be kept low and the superordinate diagnosis unit can dynamically indicate which magnitudes have to be tested for a certain condition and within what limit values the respective condition is regarded as fulfilled.
- According to a further embodiment of this aspect of the invention, the superordinate diagnosis unit is configured to issue diagnosis commands iteratively by generating a first diagnosis command, receiving at least one command response thereto and generating on the basis thereof at least a second diagnosis command, and so on. A typical diagnosis situation does in fact entail repeated questions before a proper diagnosis can be arrived at. To this end, it is normal to determine a suitable follow-up question to at least one previous diagnosis command.
- According to another embodiment of this aspect of the invention, the local module comprises local software adapted to controlling the local module's interaction with the vehicle's internal network and with the superordinate diagnosis unit. The local software is also configured to be updatable from the central processor resource. This means that the whole diagnosis process can be adjusted and controlled very effectively from the central processor resource.
- According to another aspect of the invention, the object is achieved by the method described in the introduction whereby the central processor resource is supposed to include a superordinate diagnosis unit adapted to generating diagnosis commands in the form of control instructions. To this end, the method comprises execution of diagnosis commands in the vehicle exclusively in response to control instructions from the central processor resource. The advantages of this method and of its preferred embodiments are indicated by the above discussion pertaining to the proposed system.
- According to a further aspect of the invention, the object is achieved by a computer programme which can be directly downloaded to the internal memory of a computer and comprises software for controlling the steps according to the method proposed above when said programme is run on a computer.
- According to a further aspect of the invention, the object is achieved by a computer-readable medium which has stored on it a programme adapted to enabling a computer to control the steps according to the method proposed above.
- The present invention is explained below in more detail on the basis of embodiments described by way of examples with reference to the attached drawings.
- Figure 1
- is a schematic diagram of a preferred remote diagnosis system,
- Figure 2
- is a flowchart illustrating the general method according to the invention, and
- Figure 3
- is a flowchart illustrating a preferred embodiment of the method according to the invention.
- We refer initially to
Figure 1 depicting an embodiment of a system according to the invention. The system comprises acentral processor resource 100 and at least onevehicle 180. Thecentral processor resource 100 is configured to communicate wirelessly with a designatedvehicle 180 via at least one network, such as Internet and a mobile communication network 160 (e.g. represented by a WLAN, GSM network or 3G network). To this end, thecentral processor resource 100 includes asuperordinate diagnosis unit 110 adapted to generating diagnosis commands DC in the form of control instructions CI. - Before such control instructions can be generated, however, an identification procedure has normally to be conducted. This procedure determines what electronic components and software components are incorporated in the electrical system of the
vehicle 180. On the basis of the information obtained during the identification procedure about the specification and configuration of thevehicle 180, thecentral processor resource 100 can begin to take diagnostic information from thevehicle 180, particularly its electrical system. Diagnostic information may for example comprise information about fault codes from control units (e.g. ECUs) of thevehicle 180, statistics about how thevehicle 180 has been used during a historical period, and current and historical values for sensors and actuators in the vehicle's electrical system. - As the control units in the
vehicle 180 contain many different types of information (in varying formats), the commands needed for controlling different control units (and versions of them) generally differ considerably from one another. A relatively advanced logic and knowledge database is therefore required to be able to decide on the basis of the configuration of a givenvehicle 180 what are appropriate diagnosis commands DC/control instructions Cl for it. According to the invention, this functionality is located in thecentral processor resource 100. - To provide the
superordinate diagnosis unit 110 with a diagnosis interface in relation to vehicles, eachvehicle 180 is equipped with alocal module 182. Thelocal module 182 is adapted to exclusively executing diagnosis commands DC in the form of control instructions CI from thecentral processor resource 100. Assurance is thus provided that only authorised control means have access to anetwork 184 in thevehicle 180 and to the units connected thereto, here exemplified by the unit marked 186. - Following control instructions Cl received, the
local module 182 causes execution of at least one diagnosis command DC concerning at least oneunit 186 which is connected to theinternal network 184 of thevehicle 180. Said at least one diagnosis command DC itself results in at least one command response R which is returned to thecentral processor resource 100 via thelocal module 182 and the network/networks - As the
vehicle 180 may be of very great complexity, thesuperordinate diagnosis unit 110 is with advantage configured to issue diagnosis commands DC iteratively depending on the results arising from the questions posed/diagnosis commands DC issued. This means that a first diagnosis command DC is produced and at least one first command response R is received. On the basis of said at least one first command response R, thesuperordinate diagnosis unit 110 then issues at least a second diagnosis command DC which results in at least one second command response R, and so on. - Producing a diagnosis command DC may involve substantial parts of the resources of a control unit. If a diagnosis procedure is conducted during operation of the
vehicle 180, there is therefore risk that the procedure might put at risk, or at least interfere with, important vehicle functions. According to an embodiment of the invention, a given diagnosis command DC may therefore be associated with one or more conditions relating to operation of thevehicle 180. Examples of such conditions are the brakes not being activated, the vehicle's speed being below a certain value and a power take-off not being activated. In this case thelocal module 182 only executes a diagnosis command DC if all of the operation-related conditions associated with it are fulfilled. Specifically, according to this embodiment of the invention, thelocal module 182 is adapted, before executing a diagnosis command DC, to checking whether it is associated with one or more conditions relating to operation of thevehicle 180, and to only executing it if all of the operation-related conditions associated with it are fulfilled. - As operationally critical conditions which allow one or more diagnosis commands DC to be executed may cease to be fulfilled after execution of such a command has begun, the
local module 182 according to an embodiment of the invention is further configured to apply the procedure of monitoring, during execution of a diagnosis command DC, any conditions associated with it, and of ceasing to execute it if one or more of said associated conditions is found not to be fulfilled. - In addition, with the object of minimising leadtime for a command response R, the
local module 182 is with advantage configured to resume executing a diagnosis command DC as soon as all of the conditions associated with it are again found to be fulfilled. Depending on the amount of time its completion takes and whether said conditions are fulfilled and not fulfilled, the execution of a given diagnosis command may of course be halted and resumed more than once. - As mentioned above, each condition relating to operation of the
vehicle 180 for deciding whether execution of a diagnosis command DC is allowed is defined by one or more parameters, e.g. an indicated speed range, no activation of manually initiated braking, no activation of the power take-off of thevehicle 180 or a requirement for the steering wheel angle deflection to be within an indicated range. For the sake of flexibility and to keep down the complexity of thelocal module 182, it is preferred that the set of parameters which indicate respective conditions relating to operation of thevehicle 180 be defined by thesuperordinate diagnosis unit 110. - According to an embodiment of the invention, the
local module 182 contains local software adapted to controlling its interaction with thenetwork 184 in thevehicle 180 and with thesuperordinate diagnosis unit 110. The local software is also configured to be updatable from thecentral processor resource 100 so that the diagnostic process can be controlled and adjusted effectively from the central processor resource. - It is also preferred that the
central processor resource 100 be configured to function in accordance with the instructions in central software which is executed in theprocessor resource 100. It is therefore advantageous if thecentral processor resource 100 includes, or is in some other way linked to, a memory module M containing software which, when executed in thecentral processor resource 100, causes the procedure described above to be applied. - To summarise, the general method according to the invention will now be described with reference to the flowchart in
Figure 2 . - A
first step 210 checks whether a diagnosis command has been received in the local module of a vehicle. If such is the case, astep 220 follows, otherwise the procedure loops back and comes to a halt atstep 210. Step 220 checks whether a diagnosis command received consists exclusively of control instructions from the central processor resource. If such is the case, astep 230 follows, otherwise the procedure loops back tostep 210. Step 230 executes the diagnosis command defined by the control instructions, whereupon a corresponding command response is generated. Astep 240 then returns the command response to the central processor resource, followed by the procedure looping back to step 210. -
Figure 3 is a flowchart illustrating a preferred embodiment of the proposed method. - As above, two
initial steps next step 310 checks whether the diagnosis command received is associated with one or more conditions relating to operation of the vehicle. If it is found that the command is not associated with any such conditions, this finding is followed by the executing step and reportingstep step 210. - If on the contrary the diagnosis command is associated with at least one condition relating to operation of the vehicle,
step 310 is followed by astep 320 which checks whether said condition/s is/are fulfilled. If one or more conditions are not fulfilled, the procedure loops back and comes to a halt at 320. Otherwise step 230 follows. - The method steps described with reference to
Figures 2 and 3 may be controlled by means of programmed computer apparatus. In addition, even if the embodiments of the invention described above with reference to the diagrams comprise a computer and processes conducted in a computer, the invention extends to computer programmes, especially computer programmes on or in a carrier, suited to practically implementing the invention. The programme may be in the form of source code, object code, a code intermediate between source and object code, e.g. in partly compiled form, or in any other form suitable for use in implementing the process according to the invention. The carrier may be any entity or device capable of carrying the programme. For example, the carrier may comprise a storage medium such as a flash memory, an ROM (read only memory), e.g. a CD (compact disc) or semiconductor ROM, EPROM (electrically programmable ROM), EEPROM (erasable EPROM) or a magnetic recording medium, e.g. a floppy disc or a hard disc. The carrier may also be a transmitting carrier such as an electrical or optical signal which can be conveyed by an electrical or optical cable or via radio or in some other way. Where the programme is in the form of a signal which can be conveyed directly by cable or some other device or means, the carrier may take the form of such a cable, device or means. Alternatively the carrier may be an integrated circuit in which the programme is embedded and which is adapted to conducting, or to being used in conducting, the relevant processes. - The invention is not restricted to the embodiments described with reference to the diagrams but may be varied freely within the scope of the claims set out below.
Claims (15)
- A system for diagnosis of vehicles, comprising
a central processor resource (100) configured to communicate wirelessly with at least one vehicle (180), and
a local module (182) located in the respective vehicle (180) and configured
to receive diagnosis commands (DC) from the central processor resource (100),
to cause execution of said diagnosis commands (DC) concerning at least one unit (186) connected to a network (184) in the vehicle (180), leading to at least one command response (R), and
to return said at least one command response (R) to the central processor resource (100),
characterised in that the central processor resource (100) includes a superordinate diagnosis unit (110) adapted to generating diagnosis commands (DC) in the form of control instructions (CI), and the local module (182) is adapted to exclusively executing diagnosis commands (DC) in response to said control instructions (Cl) from the central processor resource (100). - The system according to claim 1, whereby the local module (182) is adapted, before executing a diagnosis command (DC), to checking whether it is associated with one or more conditions relating to operation of the vehicle (180), and to only executing it if all of the operation-related conditions associated with it are fulfilled.
- The system according to claim 2, whereby the local module (182) is further configured
to monitor, when executing a diagnosis command (DC), any conditions associated with it, and
to cease executing the diagnosis command (DC) if one or more of said associated conditions are found not to be fulfilled. - The system according to claim 3, whereby the local module (182) is further configured
to resume executing the diagnosis command (DC) if all of the conditions associated with it are again found to be fulfilled. - The system according to any one of claims 2 to 4, whereby a set of parameters for said one or more conditions relating to operation of the vehicle (180) is defined by the superordinate diagnosis unit (110).
- The system according to any one of the foregoing claims, whereby the superordinate diagnosis unit (110) is configured to issue diagnosis commands (DC) iteratively by
receiving at least one command response (R) in response to a first diagnosis command (DC), and on the basis thereof
generating at least a second diagnosis command (DC). - The system according to any one of the foregoing claims, whereby the local module (182) contains local software adapted to controlling its interaction with the network (184) in the vehicle (180) and with the superordinate diagnosis unit (110), which local software is configured to be updatable from the central processor resource (100).
- A method for diagnosis of vehicles (180), comprising
wireless communication between a central processor resource (100) and a local module (182) in the vehicle (180), which communication caters for
receiving in the local module (182) at least one diagnosis command (DC) from the central processor resource (100) and responding thereto by
executing said at least one diagnosis command (DC) concerning at least one unit (186) connected to a network (184) in the vehicle (180), thereby leading to at least one command response (R), and
returning said at least one command response (R) to the central processor resource (100),
characterised in that the central processor resource (100) includes a superordinate diagnosis unit (110) adapted to generating diagnosis commands (DC) in the form of control instructions (Cl), and the method comprises
executing diagnosis commands (DC) in the vehicle (180) exclusively in response to said control instructions (CI) from the central processor resource (100). - The method according to claim 8, comprising
checking, before a diagnosis command (DC) is executed, whether it is associated with one or more conditions relating to operation of the vehicle (180), and
only executing the diagnosis command (DC) if all of the operation-related conditions associated with it are fulfilled. - The method according to claim 9, comprising
monitoring, during execution of the diagnosis command (DC), any conditions associated with it, and
ceasing to execute the diagnosis command (DC) if one or more of said associated conditions are found not to be fulfilled. - The method according to claim 10, comprising
resuming execution of the diagnosis command (DC) if all of the conditions associated with the latter are again found to be fulfilled. - The method according to any one of claims 9 to 11, whereby a set of parameters for said one or more conditions relating to operation of the vehicle (180) is defined by the superordinate diagnosis unit (110).
- The method according to any one of claims 8 to 12, comprising iterative issue of diagnosis commands (DC) by
receiving at least one command response (R) in the superordinate diagnosis unit (110), and on the basis thereof
generating at least one further diagnosis command (DC). - A computer programme which can be directly downloaded to the internal memory (M) of a computer and comprises software for controlling the steps according to any of claims 8 to 13 when said programme is run on the computer.
- A computer-readable medium (M) which has stored on it a programme which is adapted to enabling a computer to control the steps according to any of claims 8 to 13.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE1051247A SE535369C2 (en) | 2010-11-29 | 2010-11-29 | Remote diagnostics of vehicles |
Publications (3)
Publication Number | Publication Date |
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EP2458563A2 true EP2458563A2 (en) | 2012-05-30 |
EP2458563A3 EP2458563A3 (en) | 2014-09-17 |
EP2458563B1 EP2458563B1 (en) | 2020-02-12 |
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EP11188159.5A Active EP2458563B1 (en) | 2010-11-29 | 2011-11-08 | Remote diagnosis of vehicles |
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EP (1) | EP2458563B1 (en) |
SE (1) | SE535369C2 (en) |
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US11449327B2 (en) | 2018-11-30 | 2022-09-20 | Paccar Inc | Error-resilient over-the-air software updates for vehicles |
US11356425B2 (en) | 2018-11-30 | 2022-06-07 | Paccar Inc | Techniques for improving security of encrypted vehicle software updates |
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US20050251304A1 (en) | 2004-05-03 | 2005-11-10 | Pasquale Cancellara | Device and method for performing both local and remote vehicle diagnostics |
US20060122748A1 (en) | 2004-12-04 | 2006-06-08 | Seong Taeg Nou | System and method for diagnosing remote vehicle using telematics system |
DE102006044896B3 (en) | 2006-09-22 | 2008-04-10 | GM Global Technology Operations, Inc., Detroit | Remote manipulation diagnosis system for vehicle, has server assigned to distributed network information system and having access to service card index, where manipulation flag is maintained until access is made by server |
US20080183484A1 (en) | 2007-01-26 | 2008-07-31 | Denso Corporation | Vehicle diagnosis system |
US7668643B2 (en) | 2007-03-30 | 2010-02-23 | O2Micro International Ltd. | Method and system for automatically inspecting and registering automotive exhaust emission data |
JP2009150798A (en) | 2007-12-21 | 2009-07-09 | Honda Motor Co Ltd | Remote diagnosis system of vehicle |
Also Published As
Publication number | Publication date |
---|---|
EP2458563A3 (en) | 2014-09-17 |
SE535369C2 (en) | 2012-07-10 |
EP2458563B1 (en) | 2020-02-12 |
SE1051247A1 (en) | 2012-05-30 |
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