WO2012049750A1 - 車両データ取得システム及び車両データ取得方法 - Google Patents
車両データ取得システム及び車両データ取得方法 Download PDFInfo
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- WO2012049750A1 WO2012049750A1 PCT/JP2010/068000 JP2010068000W WO2012049750A1 WO 2012049750 A1 WO2012049750 A1 WO 2012049750A1 JP 2010068000 W JP2010068000 W JP 2010068000W WO 2012049750 A1 WO2012049750 A1 WO 2012049750A1
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- vehicle
- information processing
- data acquisition
- data
- vehicle data
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/34—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment
- G06F11/3466—Performance evaluation by tracing or monitoring
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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
- G07C5/0841—Registering performance data
- G07C5/085—Registering performance data using electronic data carriers
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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
- G07C5/0841—Registering performance data
- G07C5/085—Registering performance data using electronic data carriers
- G07C5/0858—Registering performance data using electronic data carriers wherein the data carrier is removable
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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
- G07C5/008—Registering or indicating the working of vehicles communicating information to a remotely located station
Definitions
- the present invention relates to a vehicle data acquisition system and a vehicle data acquisition method for acquiring vehicle data by using an operation of an information processing device mounted on a vehicle.
- an analysis of the vehicle state is performed based on vehicle data acquired through a program executed by the information processing device. Is done. For this reason, the in-vehicle information processing apparatus is provided with a function for storing the vehicle data thus acquired in time series, a so-called data log function.
- the data to be acquired through the in-vehicle information processing device differs depending on the analysis target, such as the content of the target defect, so even with such a data log function, the type and number of data to be acquired are subject to analysis. It needs to be changed accordingly.
- Patent Document 1 basically includes a control program for controlling a vehicle and a diagnostic program including a data log function for storing vehicle data while diagnosing each part of the vehicle. Yes.
- the diagnostic program changes the vehicle data to be stored and its storage conditions based on the function change information sent in response to the failure information from the maintenance terminal device connected to the in-vehicle information processing device. Is done.
- a technician who has no knowledge of the diagnostic program can easily collect vehicle data for identifying the failure location by sending function change information corresponding to the failure information from the terminal device to the in-vehicle information processing device. Will be able to.
- vehicle data useful for failure diagnosis based on function conversion information corresponding to failure information is so-called log data, even when an engineer who is not familiar with the program performs. Will be remembered as In addition, since function conversion information corresponding to the failure information is prepared in advance, there is no possibility of inaccurate modification when the source code of the program is changed.
- the diagnostic program has a processing structure for storing vehicle data based on storage conditions after the control program executes (calls) diagnostic processing included in each control. That is, the vehicle data is collected and stored for each processing result by the control program, and it is inevitable that the flexibility of a recent program will be advanced and complicated.
- the present invention has been made in view of such circumstances, and its purpose is to provide vehicle data to be analyzed without causing erroneous modification to existing information processing executed through the in-vehicle information processing apparatus. Is to provide a vehicle data acquisition system and a vehicle data acquisition method.
- the present invention provides a vehicle data acquisition system that acquires vehicle data through an in-vehicle information processing device mounted on a vehicle, and stores the acquired vehicle data in a storage device.
- An information processing unit that executes an information processing procedure is incorporated in the processing device in advance.
- the vehicle data acquisition system includes data acquisition support means that is dynamically incorporated in the in-vehicle information processing apparatus to support acquisition of the vehicle data by using an information processing operation state of the in-vehicle information processing apparatus;
- a probe unit arranged as an invalid instruction is provided at one or a plurality of positions where the data acquisition process in the processing procedure is executed.
- the probe unit is configured to be replaceable with another command according to an instruction from the data acquisition support unit.
- the data acquisition support means replaces the probe unit with the vehicle data acquisition command as the data acquisition support means itself is incorporated into the in-vehicle information processing apparatus. Further, the data acquisition support means stores the vehicle data acquired by the replacement in the storage device in time series, and after acquiring the required vehicle data, replaces the probe unit with the invalid command again. .
- the probe unit can be arranged at a position where the process of acquiring the data acquisition target is executed in the processing procedure of the information processing unit of the in-vehicle information processing apparatus. That is, the probe unit can be arranged at a position where the target vehicle data can be acquired as a position with less restrictions in the processing procedure. Therefore, the flexibility of acquisition of vehicle data through the in-vehicle information processing apparatus by using the probe unit can be increased. For example, in a configuration in which data is acquired for each processing step included in the information processing unit of the in-vehicle information processing apparatus, only vehicle data corresponding to the result of each processing step can be acquired.
- the present invention it is possible to acquire vehicle data indicating the operation state of the in-vehicle information processing apparatus in more detail by arranging the probe unit in the processing procedure included in the processing step.
- the present invention provides a probe unit at a position in the middle of the circuit or in a source code constituting the processing unit regardless of the circuit configuration of the in-vehicle information processing apparatus or the processing unit of the program. Try to arrange.
- the vehicle data through the vehicle-mounted information processing apparatus through the probe unit can be acquired in detail.
- even vehicle data acquired via the probe unit can be acquired as vehicle data that can be used to analyze the operation state of the in-vehicle information processing apparatus with high accuracy. For this reason, the accuracy of investigating the cause of the failure of the in-vehicle information processing apparatus is improved.
- the data acquisition support means replaces the invalid command of the probe unit with the vehicle data acquisition command by the in-vehicle information processing apparatus, and replaces the probe unit with the invalid command after acquiring the necessary vehicle data.
- the data acquisition support means may determine whether or not execution of command replacement for the probe unit is performed according to the state of the vehicle. According to such a configuration, it is determined whether or not the replacement of the command for the probe unit is performed in accordance with the state of the vehicle, such as the vehicle is running, stopped, or key operation of the vehicle. The As a result, the replacement of the command for the probe unit can be performed in a vehicle state suitable for the replacement work. In other words, it is possible to prevent the replacement of the command for the probe unit from being performed in a vehicle state that is not suitable for the replacement work. From this, it becomes possible to perform the replacement operation of the command to the probe unit so as not to affect the traveling of the vehicle, and to improve the safety of the acquisition process of the vehicle data. .
- the data acquisition support means may execute replacement of a command for the probe unit under a condition that the vehicle is stopped. According to this configuration, when the vehicle is stopped, the replacement operation for the command to the probe unit is performed. This makes it possible to perform the replacement work while avoiding the influence on the travel, even if the replacement work of the command to the probe unit that may affect the travel is in progress. As a result, the safety of the vehicle data acquisition process via the probe unit can be further enhanced.
- the data acquisition support means When the time required for information processing by the in-vehicle information processing apparatus is predicted to exceed the specified time assigned to the information processing by replacing the command for the probe unit, the data acquisition support means, It may be configured not to replace an instruction for the probe unit.
- the data acquisition support means includes a plurality of the data acquisition support means so that a time required for information processing by the in-vehicle information processing device does not exceed a specified time allocated to the information processing. It may be configured to replace instructions for a part of the probe units selected from the probe units.
- the data acquisition support means replaces a command for the probe unit when it is determined that the vehicle data acquisition process via the probe unit adversely affects information processing executed by the in-vehicle information processing apparatus. It may be configured not to perform.
- the data acquisition support means does not replace the command for the probe unit. This prevents the vehicle data acquisition process from adversely affecting the information processing being executed by the in-vehicle information processing apparatus.
- the data acquisition support means does not replace the command to the probe unit when it is determined that the vehicle data acquisition process via the probe unit does not satisfy the execution condition in the in-vehicle information processing apparatus. May be configured.
- the instruction for the probe unit is replaced. Absent. This prevents the vehicle data acquisition process from adversely affecting the information processing being executed by the in-vehicle information processing apparatus.
- the data acquisition support means is provided with an instruction for acquiring the vehicle data in advance, and the acquisition is performed so that the time required for information processing by the in-vehicle information processing device does not exceed a specified time assigned to the information processing.
- the instruction may be created.
- the data acquisition support means may be configured to be dynamically incorporated into the in-vehicle information processing apparatus via wired communication or wireless communication. According to such a configuration, the data acquisition support means is dynamically incorporated into the in-vehicle information processing apparatus through wired communication or wireless communication. For this reason, it is not necessary to previously provide the data acquisition support means in the in-vehicle information processing apparatus. As a result, the in-vehicle information processing apparatus is provided with only processing procedures required for information processing, and the data acquisition support means adds to the in-vehicle information processing apparatus by wired communication or wireless communication as necessary for acquisition of vehicle data. Will be able to.
- the wired communication can include communication through various LANs and communication using a connection interface of an external device such as a USB port.
- the in-vehicle information processing apparatus is configured to execute the processing procedure based on an information processing program stored in advance, and the probe unit is embedded in the information processing program as an invalid instruction.
- the data acquisition support means is realized by an additional program including, as a script, an acquisition command for the vehicle data configured to be able to be loaded into the vehicle information processing apparatus and unloaded from the vehicle information processing apparatus. Also good.
- the probe unit is replaced with an acquisition command for the vehicle data, and after acquiring the required vehicle data, or from the in-vehicle information processing apparatus The probe unit may be re-replaced with the invalid instruction in response to the additional program being unloaded.
- the operation of the information processing program that is, the operation state of the in-vehicle information processing apparatus and thus the operation of the vehicle can be detailed.
- Vehicle data that can be analyzed can be acquired.
- the data acquisition support means is unloaded.
- the probe unit is replaced again with an invalid instruction.
- the vehicle data stored in the storage device may be sent to an analysis center.
- the analysis center may be configured to analyze the state of the vehicle based on the transition of the vehicle data.
- the acquired vehicle data is sent to the analysis center that analyzes the data, so that the state of the vehicle is analyzed in detail at the analysis center.
- the state of the vehicle based on the operation of the in-vehicle information processing apparatus is analyzed even when the in-vehicle information processing apparatus to be analyzed is far away from the analysis center.
- the vehicle data acquired via the in-vehicle information processing apparatus is analyzed, so that it becomes possible to test and investigate a problem that has occurred in the vehicle.
- the conditions under which the vehicle state can be analyzed are relaxed, and it becomes easy to conduct surveys and tests based on the analysis and the like, and it is also possible to facilitate the surveys and tests in a suitable driving environment.
- the vehicle data may be configured to be sent from the storage device to the analysis center via wireless communication. According to such a configuration, the vehicle data is sent to the analysis center by wireless communication.
- vehicle data can be acquired without being limited to the capacity of the storage device, and the in-vehicle information processing apparatus can quickly send the vehicle data to the analysis center. Therefore, it becomes possible to more quickly conduct tests and investigations such as vehicle malfunctions by analyzing vehicle data.
- the present invention provides a vehicle data acquisition method for acquiring vehicle data through an in-vehicle information processing device mounted on a vehicle, and storing the acquired vehicle data in a storage device, and the in-vehicle information An information processing unit that executes an information processing procedure is incorporated in the processing device in advance.
- the vehicle data acquisition method includes a step of dynamically incorporating data acquisition support means for supporting the acquisition of the vehicle data by using the information processing operation state of the on-vehicle information processing device into the on-vehicle information processing device. Prepare.
- the vehicle data acquisition method further includes a probe unit arranged as an invalid command at one or a plurality of positions where the data acquisition process of the processing procedure is executed, and the data acquisition support means is incorporated in the in-vehicle information processing apparatus.
- a replacement step for replacing with the vehicle data acquisition command is provided.
- the probe unit can be replaced with another command according to an instruction from the data acquisition support unit.
- the vehicle data acquisition method further includes a storage step of storing the vehicle data acquired by the replacement in the storage device in time series; and after the acquisition of the required vehicle data, the probe unit is disabled. And a re-replacement step of re-replacement with an instruction.
- the probe unit is used as a position for executing a process for acquiring a data acquisition target in a processing procedure of the information processing unit of the in-vehicle information processing apparatus, that is, a position with less restrictions in the processing procedure. If the vehicle data can be acquired, it can be arranged at any position. Therefore, the flexibility of acquisition of vehicle data through the in-vehicle information processing apparatus by using the probe unit can be increased. For example, when data is acquired for each processing step included in the information processing unit of the in-vehicle information processing apparatus, only vehicle data corresponding to the result of each processing step can be acquired.
- the present invention it is possible to acquire vehicle data indicating the operation state of the in-vehicle information processing apparatus in more detail by arranging the probe unit in the processing procedure included in the processing step.
- the present invention provides a probe unit at a position in the middle of the circuit or in a source code constituting the processing unit regardless of the circuit configuration of the in-vehicle information processing apparatus or the processing unit of the program. Try to arrange.
- vehicle data through the in-vehicle information processing apparatus through the probe unit can be acquired in detail.
- even vehicle data acquired via the probe unit can be acquired as vehicle data that can analyze the operation state of the in-vehicle information processing apparatus with high accuracy. For this reason, the accuracy of investigating the cause of the failure of the in-vehicle information processing apparatus is improved.
- the data acquisition support means replaces the invalid instruction of the probe unit with the acquisition command of the vehicle data through the in-vehicle information processing apparatus, and replaces the probe unit with the invalid command after acquiring the necessary vehicle data.
- whether or not the instruction replacement for the probe unit is executed may be determined according to the state of the vehicle.
- the replacement of the command for the probe unit can be performed in a vehicle state suitable for the replacement work.
- the block diagram which shows schematic structure of the vehicle-mounted information processing apparatus shown in FIG. FIG. 2 is a diagram illustrating activation conditions of a data acquisition program in the in-vehicle information processing apparatus illustrated in FIG. 1, wherein (a) illustrates activation conditions according to vehicle key states, and (b) illustrates activation of (a).
- wrist which shows the content of the collection script contained in the data acquisition program shown in FIG.
- FIG. 6 is a diagram illustrating a mode in which the data acquisition program illustrated in FIG. 5 changes an application program, in which (a) schematically illustrates a probe unit of the application program, and (b) illustrates the application program illustrated in (a).
- FIG. 6 is a diagram showing one mode when the data acquisition program shown in FIG. 5 changes the probe part of the application program, and (a) shows a state in which a NOP instruction (Non Operation instruction) is arranged in the probe part.
- NOP instruction Non Operation instruction
- FIG. 11 is a flowchart showing a process of data log generation processing following FIG. 10.
- FIG. 11 The flowchart figure which shows the process about the log system deletion process following FIG.
- the block diagram which shows the schematic structure about 2nd Embodiment which actualized the vehicle data acquisition system which concerns on this invention.
- FIG. 1 is a block diagram showing an outline of a vehicle data acquisition system.
- the vehicle data acquisition system includes an in-vehicle information processing device 21 mounted on a vehicle 20 as a moving body.
- the in-vehicle information processing apparatus 21 exchanges various data such as program data and log data with the data analysis center 10 provided outside the vehicle 20.
- the data analysis center 10 performs tests and investigations such as the operating state of the vehicle 20 by analyzing data logs acquired from information processing devices such as various control devices mounted on the vehicle 20.
- the data analysis center 10 uses the application program 11 as an information processing program executed by the in-vehicle information processing device 21 mounted on the vehicle 20 when testing the operating state of the vehicle 20 or the like.
- the vehicle 20 is analyzed based on the vehicle data acquired by the vehicle 20.
- Various operation tests and the like performed by the data analysis center 10 include tests and investigations related to malfunctions of the vehicle 20 and malfunctions occurring in the in-vehicle information processing apparatus 21 mounted on the vehicle 20.
- the data log used by the data analysis center 10 for analysis (a data log 22 to be described in detail later) is the vehicle data acquired and stored in relation to the operation of the application program 11 executed by the in-vehicle information processing device 21. It is a data log generated by being recorded in series. That is, in the present embodiment, the in-vehicle information processing device 21 of the vehicle 20 realizes a data log function that generates a data log 22 composed of vehicle data.
- the data analysis center 10 holds the same application program 11 as the application program 11 installed in the in-vehicle information processing apparatus 21.
- the data analysis center 10 may be able to generate the same program as the application program 11 or obtain it from the outside whenever it is required.
- the data analysis center 10 holds a data acquisition program 12 that can constitute a data acquisition support means in the vehicle 20 by being introduced into the in-vehicle information processing device 21.
- the data acquisition program 12 is executed by the in-vehicle information processing device 21, thereby acquiring vehicle data acquired by using the application program 11 executed in the in-vehicle information processing device 21, for example, various vehicle states And a data log function for generating a data log 22 such as data on the program and data of internal variables of the program.
- the data analysis center 10 holds the same application program 11 that is executed by the in-vehicle information processing apparatus 21, the application program 11 executed by the in-vehicle information processing apparatus 21 is executed in the vehicle 20. It is possible to appropriately create and manage the data acquisition program 12 that acquires vehicle data by using it.
- the program data log 13 is held in the data analysis center 10.
- the program data log 13 is generated by transferring a data log 23 of vehicle data acquired by the in-vehicle information processing apparatus 21 to the data analysis center 10. That is, the data analysis center 10 holds the data log 22 acquired by the in-vehicle information processing device 21 as the program data log 13.
- the state of the vehicle 20, for example, the state of the in-vehicle information processing device 21 is analyzed based on the program data log 13. More specifically, the data analysis center 10 is based on the application program 11 and the data acquisition program 12, and the data included in the program data log 13 including the data log 22 of the vehicle data is stored in the vehicle 20 under any conditions and circumstances. It can be determined whether it has been acquired. For this reason, the data analysis center 10 can analyze various operation states of the vehicle 20 based on the program data log 13, and through this analysis, the state of the vehicle 20, for example, the state of the in-vehicle information processing device 21 and the like. The operating state of the application program 11 can also be analyzed.
- the data analysis center 10 can transfer the stored data acquisition program 12 to a portable storage device 15 such as a USB memory.
- the data analysis center 10 can acquire the data log 22 stored in the vehicle 20 as the program data log 13 via the portable storage device 15. That is, the data acquisition program 12 included in the data analysis center 10 is transferred to the in-vehicle information processing device 21 of the vehicle 20 via the portable storage device 15.
- the data log 22 of the vehicle 20 is transferred from the vehicle 20 to the data analysis center 10 via the portable storage device 15.
- the in-vehicle information processing device 21 constitutes a navigation system that is an example of various information device devices mounted on the vehicle 20.
- the in-vehicle information processing device 21 is mainly configured by a microcomputer having an arithmetic device (vehicle CPU) 30 as an information processing unit, a storage device 31, a nonvolatile memory (ROM) 32, a volatile memory (RAM) 33, and the like. Therefore, various information processing is executed based on various data and programs stored in the storage device 31 and the memories 32 and 33.
- the in-vehicle information processing apparatus 21 is provided with an input device 35, a display device 36, and an interface 34 that can connect a memory such as the portable storage device 15.
- the input device 35 is a device for the user to input information such as operation information to the in-vehicle information processing device 21, and includes buttons displayed on the touch panel, buttons provided on the front panel, and the like. The corresponding information is input to the in-vehicle information processing apparatus 21.
- the display device 36 is a device that displays text / image information and provides it to the user. For example, information such as the vehicle position and map information is displayed as an image.
- the storage device 31 is a known storage device, and includes a HDD (Hard Disk Drive) which is a nonvolatile storage device, a nonvolatile memory (EEPROM, etc.), and the like.
- the storage device 31 stores various data and programs used for various information processing executed by the vehicle CPU 30, and also stores a data log 22 made up of vehicle data acquired by using the application program 11.
- the ROM 32 is a non-volatile memory, and holds a predetermined program to be executed and processed by the vehicle CPU 30, such as the application program 11.
- the RAM 33 is a volatile memory or the like, and temporarily stores programs executed by the vehicle CPU 30 and variables (parameters) used for the programs. For example, the RAM 33 temporarily stores the program and internal variables of the application program 11 being executed by the vehicle CPU 30 and variables indicating the traveling state of the vehicle 20 such as the vehicle speed.
- the interface 34 enables connection of various external devices (external media) to the in-vehicle information processing apparatus 21 and has a USB standard connection port in this embodiment.
- the in-vehicle information processing apparatus 21 can be connected to a USB standard portable storage device 15, a so-called USB memory, via the interface 34. Therefore, the in-vehicle information processing device 21 can read and write, that is, access to the portable storage device 15 connected to the interface 34 using the vehicle CPU 30.
- the in-vehicle information processing device 21 causes the data stored in the storage device 31 or the RAM 33 to be transferred to the portable storage device 15, or conversely transfers the data stored in the portable storage device 15 to the storage device 31 or the RAM 33. You can make it.
- the in-vehicle information processing device 21 automatically causes the vehicle CPU 30 to execute the application program 11 stored in advance in the ROM 32 or the like when it is activated. Thereby, in the in-vehicle information processing apparatus 21, the application program 11 which is a program as a navigation system is automatically started after the power is turned on. On the other hand, the in-vehicle information processing device 21 can acquire the data acquisition program 12 held in the portable storage device 15 and execute it on the vehicle CPU 30 by designation after activation.
- the in-vehicle information processing apparatus 21 causes the vehicle CPU 30 to execute the loader / unloader 16.
- the loader / unloader 16 additionally causes the vehicle CPU 30 to execute a program based on a predetermined additional condition, and conversely deletes the program additionally executed by the vehicle CPU 30 based on a predetermined deletion condition.
- the loader / unloader 16 is held in the ROM 32 and the storage device 31 in advance, and the vehicle CPU 30 automatically starts executing after the on-vehicle information processing device 21 is powered on. That is, the loader / unloader 16 is executed by the vehicle CPU 30 as a program different from the application program 11 so as not to interfere with the processing of the application program 11. Note that the loader / unloader 16 may be included in the application program 11.
- the loader / unloader 16 may be executed by the vehicle CPU 30 at a necessary timing.
- the in-vehicle information processing apparatus 21 detects that the portable storage device 15 is connected to the interface 34 by executing the loader / unloader 16, whether the data acquisition program 12 is held in the portable storage device 15 or not. Check whether or not.
- the in-vehicle information processing apparatus 21 detects that the data acquisition program 12 is held in the portable storage device 15 by executing the loader / unloader 16, the in-vehicle information processing apparatus 21 transfers the data acquisition program 12 to the RAM 33.
- the vehicle CPU 30 executes the data acquisition program 12 that has been transferred to the RAM 33. The data acquisition program 12 is activated.
- the in-vehicle information processing apparatus 21 determines that a predetermined end condition determined by the traveling condition or key operation of the vehicle 20 or the detachment of the portable storage device 15 from the interface 34.
- the data acquisition program 12 is ended. Execute the process. And after the data acquisition program 12 is complete
- FIG. 3A shows a start condition list 16A in which an example of a predetermined start condition used to determine whether the data acquisition program 12 is activated is set.
- a predetermined start condition based on the key state is set in the start condition list 16A.
- the predetermined start condition includes whether the ignition switch (ING) is turned off and whether it is turned on or not. The case of “OFF” in which the switch (ACC) is turned off is set.
- the predetermined start condition is set as a condition for starting the data acquisition program 12 when the ignition switch is “OFF” and the accessory switch is “ON”.
- the predetermined start condition is set to the case where the ignition switch is “ON” and the accessory switch is also “ON”. ing.
- FIG. 16B shows conditions for determining the vehicle states of “stop”, “stop”, and “running”.
- the “stop” of the vehicle 20 is determined from, for example, that the ignition switch is “OFF”.
- the “stop” of the vehicle 20 is determined, for example, from the fact that the ignition switch is “ON”, the parking brake is used “ON”, and the vehicle speed is “0” km / h.
- the “running” of the vehicle 20 is determined from, for example, that the ignition switch is “ON”, the parking brake is not used, and the vehicle speed is not “0” km / h.
- the predetermined start condition includes that the vehicle state is “stop”, the condition is appropriately determined.
- the application program 11 a plurality of probe portions P (P1 to P9) are embedded and arranged in advance.
- the probe unit P is arranged at a position where the execution process is performed in the middle of the process.
- the arrangement of the probe units P1 to P9 in the application program 11 is arbitrary.
- the probe units P1 to P9 can be provided at the start position and end position of various processes, and can also be provided in the middle of various processes, so-called programs. For example, as shown in FIG.
- the probe unit P3 includes an address xxx15 and an address xxx16 in the middle of a program instruction, and an invalid instruction (for example, a NOP instruction) is arranged at each address.
- an invalid instruction for example, a NOP instruction
- the probe unit P including the two addresses and the invalid instruction set therein suppresses an increase in the size and processing load of the application program 11 as much as possible.
- the application program 11 can suppress an increase in execution time due to the installation of the probe unit P as much as possible even when the probe unit P (P1 to P9) is provided, and the case where the probe unit P is not provided.
- the substantially same execution time and load factor for the vehicle CPU 30 are maintained.
- the probe units P1 to P9 of the present embodiment do not add a new load to the application program 11 even when provided in the application program 11.
- the code “xxx” used for the number of the address xxx15 is a code indicating that a specific value is omitted, and is not limited to a specific numerical value, and is an arbitrary numerical value having an arbitrary number of digits. Can be substituted.
- the arrangement positions of the probe portions P1 to P9 are preferably locations where vehicle data suitable for analyzing the operation state of the vehicle 20 can be acquired at the locations.
- vehicle data includes speed, acceleration, vibration, position, and the like, which are data related to the running state of the vehicle 20, data related to engine control, and the like.
- vehicle data includes internal variables of the application program 11, variables indicating the operating state of the vehicle CPU 30, variables indicating the state of the OS, etc., and variables relating to program switching.
- the vehicle data includes the contents of a stack (stack dump), which is a data structure for performing data processing in and out of program processing by “last-in first-out”, and the contents of memory used by the program (memory dump). .
- the data analysis center 10 acquires the arrangement position of the probe unit P in the application program 11 from the application program 11 held by the data analysis center 10 itself. can do. That is, the data analysis center 10 can create a data acquisition program 12 that acquires vehicle data by using the application program 11 after grasping the position of the probe unit P arranged in the application program 11. It has become.
- the data acquisition program 12 includes an acquisition script 40, a data output function group 41, an acquisition control unit 42 that manages the data acquisition program 12, and an interpreter 43.
- the acquisition script 40 defines the position of the probe unit P whose function is changed so that vehicle data can be acquired and the details of the change, and depends on the object to be analyzed during an operation test of the vehicle 20 or the like. And created by the data analysis center 10 or the like. Note that a script for a basic analysis target, a script for a frequently investigated target, and the like may be prepared in advance in the data analysis center 10 or the like.
- a probe function change list 50 shown in FIG. 6 in which a function to be changed for each probe unit P that is a function change target is set, and conditions for permitting the probe unit P to be changed are defined.
- a changeable condition 51 shown in FIG. 7 is set.
- the probe function change list 50 one or a plurality of probe parts P whose functions are changed in order to acquire vehicle data are set, and the set one or a plurality of sets are set.
- the changed function is set for each probe unit P.
- one probe unit P3 (address xxx15) included in the application program 11 executed by the vehicle CPU 30 is used as a command for executing a basic log function (a basic log function 41a described later) which is one of so-called acquisition commands. It is set so that it can be changed.
- another probe unit P4 (address xxx60) of the application program 11 being executed is an instruction for executing a function (CPU state output function 41b described later) that outputs a CPU state, which is one of so-called acquisition instructions. It is set so that it can be changed. Further, another probe part P5 (address xxx77) of the application program 11 being executed is set to be changed to an instruction for executing the basic log function 41a which is one of the acquisition instructions. That is, based on the probe function change list 50, the setting of each probe unit P is replaced.
- the changeable condition 51 is a so-called restriction filter in which items (constraint conditions) to be confirmed and their contents are set as conditions for determining whether or not each probe part P can be replaced according to the probe function change list 50. It is.
- the changeable condition 51 is satisfied, the command for the probe unit P of the application program 11 is replaced based on the probe function change list 50.
- the changeable condition 51 is not satisfied, the command for the probe unit P of the application program 11 is not replaced. As a result, it is determined in advance whether the processing performed along the acquisition script 40 does not affect the normally operating application program 11 or the like.
- the access restriction condition is a condition for confirming whether or not each address set in the probe function change list 50 is an address accessible by the data acquisition program 12. For example, when all the addresses set in the probe function change list 50 are writable addresses, it is determined that the setting contents of the probe function change list 50 are not subject to access restriction. On the other hand, when any one of the addresses set in the probe function change list 50 is an address for which writing is not permitted, it is determined that the setting contents of the probe function change list 50 are subject to access restrictions.
- the time-related constraint condition is a condition for confirming in advance whether or not the execution time of the application program 11 does not exceed the specified time by replacing the command of the probe unit P as set in the probe function change list 50. It is.
- the specified time is, for example, the maximum time that may be required for one execution when the application program 11 is periodically executed.
- the execution time of the application program 11 is calculated by adding the cumulative time required for the interpreter 43 to be executed to the execution time of the application program 11 by replacing the command of each probe unit P set in the probe function change list 50. You can also ask for it.
- the setting content of the probe function change list 50 is the time limit. It is judged not to be restricted. On the other hand, if it is predicted that the execution time of the application program 11 will exceed the specified time due to replacement of instructions for all addresses set in the probe function change list 50, the setting contents of the probe function change list 50 are set to the time limit. Judged to be restricted.
- the data output function group 41 acquires a predetermined vehicle data by using the application program 11 and stores a plurality of functions for storing the acquired vehicle data as the data log 22 in the storage device 31 or the like. It is. Examples of each function include a basic log function 41a, a CPU state output function 41b, an OS state output function 41c, a task switch function 41d, a stack dump function 41e, and a memory dump function 41f.
- the basic log function 41 a is a function that creates a data log of internal variables of the application program 11, while the CPU state output function 41 b is a function that creates a data log of variables such as a counter and a clock that indicate the operation state of the vehicle CPU 30. It is.
- the OS state output function 41c is a function for creating a data log of variables indicating the memory usage and addition rate indicating the state of the OS, etc.
- the task switch function 41d is a plurality of programs being executed by the vehicle CPU 30. This is a function for creating a data log of variables indicating the execution state of each program and the priority of each program.
- the stack dump function 41e is a function for creating a data log of the stack dump that is the contents of the memory stack
- the memory dump function 41f is the contents of the memory in which a program is executed or a variable is held. This function creates a data log for a memory dump.
- the acquisition control unit 42 controls the execution of the data acquisition program 12, and manages the determination of the changeable condition 51 in the interpreter 43, the execution and termination of the acquisition script 40, and the data through the interface 34 and the like. To manage the transfer of. For example, the acquisition control unit 42 causes the interpreter 43 to determine whether or not the acquisition script 40 satisfies the changeable condition 51. Then, when the changeable condition 51 is satisfied, the acquisition control unit 42 causes the interpreter 43 to execute the acquisition script 40. On the other hand, the acquisition control unit 42 manages the interpreter 43 so that the acquisition script 40 is not executed when the changeable condition 51 is not satisfied. Further, for example, the acquisition control unit 42 also performs a process of transferring the necessary data log 22 to the portable storage device 15 when the acquisition of the vehicle data is completed.
- the interpreter 43 uses the processing function of the vehicle CPU 30 to execute execution processing while sequentially interpreting the acquisition script and the source code included in the data output function group 41.
- the interpreter 43 is provided with a command unit 44.
- the command section 44 is provided with an execution program group that is set in advance to be used by the interpreter 43.
- a replacement command that replaces an instruction for the probe section P and an instruction for the probe section P are re-executed. Includes replacement commands to replace.
- the interpreter 43 includes a probe function change processing unit 45 that replaces or re-replaces an instruction for the probe unit P based on the acquisition script 40, and a function execution processing unit 46 that executes a function included in the data output function group 41. Etc. are provided. That is, when the acquisition script 40 is executed by the interpreter 43, the probe function change processing unit 45 executes replacement of instructions for the probe unit P or re-replacement. Each function 41a to 41f included in the data output function group 41 is processed by the interpreter 43 so that predetermined processing is performed. In the present embodiment, when the interpreter 43 creates the data log 22, the interpreter 43 creates the data log 22 in the storage device 31.
- the probe unit P3 is embedded in the address xxx15 and the address xxx16 of the application program 11 when the application program 11 is created in the data analysis center 10, for example.
- an instruction invalid instruction
- the command placed in the probe unit P3 is the data acquisition. It is replaced with an instruction for executing a predetermined output function included in the program 12.
- the command for the probe unit P3 is replaced again by the data acquisition program 12.
- the replacement of the command is executed after the vehicle data required by the data acquisition program 12 is acquired or when the data acquisition program 12 is deleted from the in-vehicle information processing apparatus 21 or is unloaded. That is, the command for the probe unit P3 is re-replaced with a command that does nothing (invalid command).
- the application program 11 is restored and maintained in the state before the instruction for the probe unit P3 is replaced, that is, the initial state in which the application program 11 is created.
- the NOP instruction arranged at the address xxx15 and the address xxx16 of the application program 11 is replaced with the instruction for the probe unit P3.
- the NOP instruction is replaced with a so-called jump instruction (JMP instruction) that moves the execution location of the program to the address destA that realizes the acquisition instruction (see FIG. 9B).
- JMP instruction a so-called jump instruction
- the basic log function 41a of the data acquisition program 12 can be executed.
- the JMP instruction arranged at the address xxx15 and the address xxx16 of the application program 11 is a NOP instruction as an invalid instruction as shown in FIG. 9C when the replacement of the instruction for the probe unit P3 is executed. Will be replaced again.
- the probe function change processing unit 45 refers to the probe function change list 50 in order to select from the probe units P of the application program 11 a probe unit P that needs to be replaced again after the command is replaced. .
- FIGS. 10 to 12 are flowcharts for explaining a data log generation procedure.
- FIG. 10 is a flowchart of the start process of the data acquisition program 12 in the in-vehicle information processing apparatus 21
- FIG. 11 is a flowchart of the data log generation process
- FIG. 12 is a flowchart of the log system deletion process.
- the data acquisition program 12 including the acquisition script 40 is transferred to the portable storage device 15 in the data analysis center 10. Thereafter, the portable storage device 15 is connected to the in-vehicle information processing device 21 via the interface 34.
- the in-vehicle information processing device 21 performs a start process of the data acquisition program 12.
- the in-vehicle information processing device 21 detects the data acquisition program 12 stored in the portable storage device 15 by the loader / unloader 16.
- the in-vehicle information processing device 21 transfers the data acquisition program 12 to the RAM 33, so-called load (incorporation step: step S10 in FIG. 10).
- the in-vehicle information processing apparatus 21 determines whether or not the start condition shown in the start condition list 16A in FIG.
- step S11 in FIG. 10 the in-vehicle information processing device 21 determines whether the start condition is satisfied every predetermined time. On the other hand, when it is determined that the start condition is satisfied (YES in step S11 in FIG. 10), the in-vehicle information processing device 21 causes the vehicle CPU 30 to start executing the data acquisition program 12, that is, starts the data acquisition program 12 ( Step S12 in FIG. As a result, the acquisition control unit 42 executes the interpreter 43. As a result, the start process (the flowchart in FIG. 10) of the data acquisition program 12 in the in-vehicle information processing apparatus 21 is completed.
- the in-vehicle information processing apparatus 21 starts a data log generation process.
- the in-vehicle information processing apparatus 21 confirms whether or not the content of the acquisition script 40 satisfies the changeable condition 51 (step S20 in FIG. 11), and the execution of the acquisition script 40 is performed. It is determined whether or not it is possible (step S21 in FIG. 11). If it is determined that the acquisition script 40 cannot be executed (NO in step S21 in FIG. 11), the in-vehicle information processing apparatus 21 ends the data log generation process without executing the acquisition script 40.
- the in-vehicle information processing device 21 determines each probe unit according to the probe function change list 50 shown in FIG. An instruction replacement process for P, that is, a function change of the probe unit P is performed (replacement step: step S22 in FIG. 11).
- the command replacement process for each probe unit P is completed, the in-vehicle information processing apparatus 21 acquires each data log through each probe unit P that has been invalidated during the command replacement process for each probe unit P. The function is validated (step S23 in FIG. 11).
- vehicle data is acquired based on the function set in the probe unit P to be executed.
- the acquired vehicle data is sequentially added to the data log 22 of the storage device 31 (storage process: step S24 in FIG. 11).
- the in-vehicle information processing device 21 When the data log 22 is stored, the in-vehicle information processing device 21 appropriately determines whether or not an end condition is satisfied (step S25 in FIG. 11). If it is determined that the end condition is not satisfied (NO in step S25 of FIG. 11), the in-vehicle information processing device 21 continues to acquire vehicle data and add it to the data log 22. On the other hand, if it is determined that the end condition is satisfied (YES in step S25 in FIG. 11), the in-vehicle information processing device 21 disables each data log acquisition function via the probe unit P, thereby The generation process (the flowchart of FIG. 11) is terminated.
- the in-vehicle information processing apparatus 21 after the data log generation process is completed performs a deletion process for removing the log system such as the data acquisition program 12 from the in-vehicle information processing apparatus 21.
- the in-vehicle information processing device 21 determines whether or not a log system removal condition is satisfied (step S30 in FIG. 12). If it is determined that the log system removal condition is not satisfied (NO in step S30 in FIG. 12), the deletion process is terminated. Even after this, the deletion process is appropriately executed.
- Step S30 in FIG. 12 the in-vehicle information processing device 21 performs a probe function change to re-replace the command for the probe unit P (re-replacement).
- Step S31 in FIG. When the function change of the probe unit P is completed, the in-vehicle information processing apparatus 21 ends the execution of the data acquisition program 12 in the vehicle CPU 30 and deletes the data acquisition program 12 held in the RAM 33 by the loader / unloader 16. (Step S32 in FIG. 12).
- the in-vehicle information processing device 21 moves the data log 22 of the storage device 31 to the portable storage device 15 using the acquisition control unit 42 of the data acquisition program 12 before or during the start of the log system deletion process. Let Therefore, the vehicle data can be introduced into the data analysis center 10 and the free capacity of the storage device 31 can be returned to the state before the data log 22 is created.
- the vehicle data acquisition system has the effects listed below.
- the vehicle data indicating the operation state of the in-vehicle information processing device 21 in more detail by arranging the probe unit P inside the program that is in the processing procedure included in the processing step. Be able to get.
- the probe unit P is arranged at a position in the middle of the source code constituting the processing unit.
- vehicle data can be acquired in detail by the in-vehicle information processing apparatus 21 via the probe unit P.
- even vehicle data acquired through the probe unit P can be acquired as vehicle data that can be used to analyze the operation state of the in-vehicle information processing apparatus 21 with high accuracy. . For this reason, the accuracy of investigating the cause of the malfunction of the in-vehicle information processing apparatus 21 is improved.
- the data acquisition program 12 replaces the invalid command of the probe unit P with a vehicle data acquisition command by the in-vehicle information processing device 21 and, after acquiring the necessary vehicle data, makes the probe unit P an invalid command. Replace again.
- the vehicle 20 is running, stopped, and the vehicle key Whether or not the command replacement for the probe unit P is executed is determined according to the state of the vehicle 20 such as an operation.
- the replacement of the command for the probe unit P can be performed in the state of the vehicle 20 suitable for the replacement work (for example, the stopped state).
- the replacement of the command for the probe unit P in the state of the vehicle 20 that is not suitable for the replacement work (for example, during traveling). From this, it becomes possible to perform the replacement operation of the command for the probe part P so as not to affect the traveling of the vehicle 20, and to improve the safety of the acquisition process of the vehicle data. become.
- the vehicle data acquisition process adversely affects the execution of the application program 11 of the in-vehicle information processing apparatus 21 such as trying to access an inaccessible address.
- the data acquisition program 12 does not replace the command for the probe unit P. This prevents the vehicle data acquisition process from adversely affecting the application program 11 being executed by the in-vehicle information processing apparatus 21.
- the data acquisition program 12 is dynamically incorporated into the in-vehicle information processing apparatus 21 through the interface 34. For this reason, it is not necessary to provide the data acquisition program 12 in the vehicle-mounted information processing apparatus 21 in advance. Therefore, the in-vehicle information processing apparatus 21 is provided only with the processing procedure required for the application program 11, and the data acquisition program 12 is added to the in-vehicle information processing apparatus 21 by wired communication as necessary for the acquisition of vehicle data. Will be able to.
- the wired communication can include communication through various LANs and communication using a connection interface of an external device such as a USB port.
- the acquired vehicle data is sent to the data analysis center 10 that analyzes the data. Therefore, the data analysis center 10 analyzes the state of the vehicle 20 in detail. As a result, the state of the vehicle 20 based on the operation of the in-vehicle information processing apparatus 21 is analyzed even when the in-vehicle information processing apparatus to be analyzed is far away from the data analysis center 10. As a result, the vehicle data acquired via the in-vehicle information processing apparatus 21 is analyzed, so that it is possible to test or investigate a malfunction that has occurred in the vehicle 20. As a result, the conditions under which the state of the vehicle 20 can be analyzed are relaxed, and it becomes easy to carry out surveys and tests based on the analysis and the like, and it is also possible to facilitate the surveys and tests in a suitable driving environment. .
- FIG. 13 shows a second embodiment in which the vehicle data acquisition system according to the present invention is embodied.
- the present embodiment is different from the first embodiment in that the center communication unit 14 provided in the data analysis center 10 replaces the portable storage device 15 with the vehicle data transfer, The point which is performed by the vehicle communication unit 23 provided in the vehicle 20 is different. Since the other configuration is the same, the same reference numeral is given to the same configuration, and the duplicate description is omitted.
- the data analysis center 10 is provided with a center communication unit 14, and the vehicle 20 is provided with a vehicle communication unit 23. Since the center communication unit 14 and the vehicle communication unit 23 can perform wireless communication with each other, the data acquisition program 12 can be transferred from the data analysis center 10 to the vehicle 20 by wireless communication. The data log 22 can be transferred from the data analysis center 10 to the data analysis center 10.
- the data analysis center 10 can create the data log 22 in the vehicle 20 by transferring the data acquisition program 12 to the vehicle 20 as necessary. Further, the data analysis center 10 can quickly acquire the data log 22 created by the vehicle 20.
- the vehicle data acquisition system according to the present embodiment in FIG. 13 has an effect equivalent to or equivalent to (1) to (7), (9), (10) described in the effect of the first embodiment.
- the following effects can be obtained.
- the data acquisition program 12 is dynamically incorporated into the in-vehicle information processing apparatus 21 through wireless communication. For this reason, it is not necessary to provide the data acquisition program 12 in the in-vehicle information processing apparatus 21 in advance. As a result, the in-vehicle information processing apparatus 21 is initially provided with only processing procedures required for the application program 11.
- the data acquisition program 12 can be added to the in-vehicle information processing apparatus 21 by wireless communication as necessary for acquiring vehicle data.
- the vehicle data is sent to the data analysis center 10 by wireless communication. Therefore, the in-vehicle information processing device 21 can acquire the vehicle data without being limited to the capacity of the storage device 31 and can quickly transmit the vehicle data to the data analysis center 10. Therefore, it becomes possible to more quickly perform tests and investigations such as malfunctions of the vehicle 20 by analyzing vehicle data.
- each said embodiment can also be implemented with the following aspects.
- the case where the entire data acquisition program 12 is loaded or unloaded on the in-vehicle information processing apparatus 21 is illustrated.
- the present invention is not limited to this, as shown in FIG. 14, the data acquisition program 12 is prepared in advance in the in-vehicle information processing apparatus 21, and only the acquisition script 40 is transferred to the in-vehicle information processing apparatus 21 via the portable storage device 15. You may make it load and unload. As a result, the degree of freedom in mounting the data acquisition program is improved.
- the data log 22 of the vehicle 20 is generated in the storage device 31 of the vehicle 20 is exemplified.
- the present invention is not limited to this, and the data log 22 of the vehicle 20 may be generated in the portable storage device 15 connected to the in-vehicle information processing device 21 or may be appropriately transmitted by communication and directly generated in the data analysis center 10. May be.
- the interpreter 43 can create data logs in various memories by changing the creation destination of the data log 22.
- the acquisition script 40 may designate the creation destination of the data log 22.
- the flexibility of the generation destination of the data log 22 is improved, so that the limitation of the storage capacity for storing the data log 22 can be avoided, for example, the flexibility of the configuration as the vehicle data acquisition system Will be improved.
- the in-vehicle information processing apparatus 21 is a navigation system
- the present invention is not limited thereto, and the in-vehicle information processing device 21 may be any control device that performs vehicle control, driving support, information provision, and the like in the vehicle 20. As a result, the possibility of adopting such a vehicle data acquisition system in the vehicle 20 is improved.
- the portable storage device 15 is a USB memory
- the present invention is not limited thereto, and the portable storage device 15 may be a USB hard disk or a USB drive. Thereby, the adoption possibility about the portable storage device 15 is improved.
- the interface 34 is a USB standard port.
- the present invention is not limited to this, and the interface 34 only needs to be able to connect a device capable of transmitting and receiving data to the in-vehicle information processing device 21 and is compatible with various in-vehicle LANs, general-purpose LANs, and various memory standards.
- An interface may be used. This also improves the degree of freedom of selection between the interface 34 and the portable storage device 15, thereby improving the flexibility of the configuration as the vehicle data acquisition system.
- the acquisition script 40 is included in the data acquisition program 12 .
- the present invention is not limited thereto, and the acquisition script 40 is supplied to the data acquisition program 12 whenever necessary. Also good. As a result, the replacement of the acquisition script 40 is facilitated, and the flexibility of the acquisition function of the data log 22 by the data acquisition program 12 can be improved.
- the present invention is not limited to this, and when the changeable condition 51 is not satisfied, the probe unit P to be changed is selected from a plurality of set probe units P so that the same condition is satisfied. Alternatively, the replacement may be limited to only the probe part P of the part.
- the time required for execution of the application program 11 by the in-vehicle information processing apparatus 21 is prevented from exceeding a specified time that is assigned in advance to the execution of the application program 11.
- the time required for the in-vehicle information processing apparatus 21 to execute the application program 11 is set within a specified time. Therefore, for example, it is possible to prevent an improper process such as being forcibly terminated because the execution of the application program 11 by the in-vehicle information processing apparatus 21 is not terminated within a specified time from occurring in the information processing.
- the safety of the vehicle data acquisition process via the probe unit P is improved, and the flexibility related to the change of the probe unit P is improved.
- the present invention is not limited to this, and the acquisition script 40 may be created so that the time required to execute the application program 11 in which the command for the probe unit P is replaced does not exceed the specified time.
- the time required for executing the application program 11 by the in-vehicle information processing apparatus 21 is the specified time allocated to the execution of the application program 11. Will not exceed.
- the present invention is not limited to this, and the number of probe portions P may be 8 or less or 10 or more. As a result, the degree of freedom of arrangement of the probe portion P is improved, and more accurate motion analysis can be performed.
- one probe unit P includes two addresses such that the probe unit P3 includes the address xxx15 and the address xxx16.
- the present invention is not limited to this, and one probe unit P may be composed of three or more addresses.
- the types of instructions that can be replaced with the probe unit P are increased, and the probe unit P can be provided with a command and a value to be recorded in the data log 22 as an argument.
- the degree of freedom of replacement of the probe part P is improved, and the flexibility of vehicle data acquisition is also improved.
- the present invention is not limited to this, and other instructions may be initially set in the probe unit P as long as an increase in the execution time of the application program 11 and the CPU load can be suppressed. This also improves the flexibility of setting the probe part P.
- the data acquisition support means is not limited to the data acquisition program 12 described above, but a system separately configured by hardware, a logic circuit, or the like can also be adopted. This improves the design flexibility of the vehicle data acquisition system.
- CPU state output function 41c ... OS state output function, 41d ... task switch function, 41e ... stack dump function, 41f ... memory dump function, 42 ... acquisition control unit 43 ... interpreter, 44 ... command unit, 45 ... probe function change processing unit, 46 ... function execution processing unit, 50 ... probe function change list 51 ... changeable conditions, P, P1 ⁇ P9 ... probe unit.
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Abstract
Description
上記課題を解決するために、本発明は、車両に搭載された車載情報処理装置を通じて車両データを取得し、取得した前記車両データを記憶装置に記憶する車両データ取得システムを提供し、前記車載情報処理装置には、情報処理の処理手順を実行する情報処理部が予め組み込まれる。前記車両データ取得システムは、前記車載情報処理装置の情報処理動作状態を利用することによって前記車両データの取得を支援すべく、前記車載情報処理装置に動的に組み込まれるデータ取得支援手段と;前記処理手順のうちのデータ取得処理を実行する1乃至複数の位置に、無効命令として配置されるプローブ部とを備える。前記プローブ部は、前記データ取得支援手段からの指示によって他の命令に置き換え可能に構成される。前記データ取得支援手段は、前記前記データ取得支援手段自身が前記車載情報処理装置に組み込まれることに伴って前記プローブ部を前記車両データの取得命令に置き換える。さらにデータ取得支援手段は、該置き換えによって取得した前記車両データを時系列的に前記記憶装置に記憶し、必要とされる前記車両データの取得後は、前記プローブ部を前記無効命令に再置き換えする。
このような構成によれば、車両が走行していることや、停止していることや、車両のキー操作などの車両の状態に応じて、プローブ部に対する命令の置き換えの実行の有無が判断される。これによって、プローブ部に対する命令の置き換えの実行を、置き換え作業に適した車両の状態で行なうことができるようにもなる。逆に言えば、プローブ部に対する命令の置き換えの実行を、置き換え作業に適していない車両の状態では行わないようにしたりすることもできる。このことから、プローブ部に対する命令の置き換え作業を、車両の走行に影響を与えないように行うようにすることができるようになり、車両データの取得処理の安全性を高めることができるようになる。
この構成によるように、車両が停車しているときに、プローブ部に対する命令の置き換え作業を行うようにする。これによって、車両走行中であれば走行に影響を与えるおそれのあるプローブ部に対する命令の置き換え作業であれ、走行に影響を与えることを避けて同置き換え作業を行うことができるようになる。これによって、プローブ部を介する車両データの取得処理の安全性を、より高めることができるようになる。
このような構成によれば、有線通信や無線通信を介することによって、データ取得支援手段が車載情報処理装置に動的に組み込まれる。このためデータ取得支援手段を、予め車載情報処理装置に設ける必要がない。これによって車載情報処理装置には、情報処理に必要とされる処理手順のみを設け、データ取得支援手段は、車両データの取得の必要に応じて有線通信や無線通信によって車載情報処理装置に追加することができるようになる。なお有線通信には、各種LANを通じた通信や、USBポートなど外部機器の接続インターフェースを用いることによる通信を含むことができる。
このような構成によれば車両データは、無線通信によって解析センタに送られる。このことによって、記憶装置の容量に限られずに車両データは取得可能になるし、車載情報処理装置は、車両データを解析センタに素早く送ることができるようになる。よって、車両データの解析による車両不具合などの試験や調査を、より速やかに行うことができるようにもなる。
このような方法によれば、車両が走行していることや、停止していることや、車両のキー操作などの車両の状態に応じて、プローブ部に対する命令の置き換えの実行の有無が、判断される。これによって、プローブ部に対する命令の置き換えの実行を、置き換え作業に適した車両の状態で行なうことができるようにもなる。逆に言えば、プローブ部に対する命令の置き換えの実行を、置き換え作業に適していない車両の状態では行わないようにしたりすることもできる。このことから、プローブ部に対する命令の置き換え作業を、車両の走行に影響を与えないように行うようにすることができるようになり、車両データの取得処理の安全性を高めることができるようになる。
本発明に係る車両データ取得システムを具体化した第1の実施形態について、図1~図12に従って説明する。図1は、車両データ取得システムの概要を示すブロック図である。
記憶装置31は、公知の記憶装置であり、不揮発性の記憶装置であるHDD(Hard Disk Drive)や不揮発性のメモリ(EEPROM等)などから構成されている。記憶装置31には、車両CPU30で実行される各種情報処理に用いる各種データ及びプログラムが格納されるとともに、アプリケーションプログラム11を利用することによって取得される車両データからなるデータログ22も格納される。
RAM33は、揮発性のメモリなどであって、車両CPU30で実行されるプログラムや、プログラムに用いられる変数(パラメータ)などが一時的に保持される。例えばRAM33には、車両CPU30にて実行処理されているアプリケーションプログラム11のプログラム及び内部変数や、車速など車両20の走行状態を示す変数などが一時的に保持される。
図2及び図4に示すように、アプリケーションプログラム11には、複数のプローブ部P(P1~P9)が予め埋め込み配置されている。プローブ部Pは、アプリケーションプログラム11が実行されると、その処理の途中で実行処理される位置に配置されている。アプリケーションプログラム11におけるプローブ部P1~P9の配置は任意であり、例えば各種処理の開始位置や終了位置に設けることができることはもとより、各種処理の途中、いわゆるプログラムの途中に設けることもできる。例えば図4に示すように、プローブ部P3は、プログラムの命令の途中であるアドレスxxx15とアドレスxxx16とからなり、各アドレスには無効命令(例えばNOP命令)が配置されている。このように、2つのアドレスとそこに設定される無効命令からなるプローブ部Pは、アプリケーションプログラム11のサイズや処理負荷の増大を極力抑えたものとなる。これによって、アプリケーションプログラム11は、プローブ部P(P1~P9)が設けられた場合であれ、プローブ部Pの設置による実行時間の増加などが極力抑えられ、プローブ部Pが設けられていない場合と略同様の実行時間や、車両CPU30に対する負荷率に維持されるようになる。すなわち本実施形態のプローブ部P1~P9は、アプリケーションプログラム11に設けられた場合であれ、当該アプリケーションプログラム11に対して新たな負荷を付加しないものとなっている。ところで、例えばアドレスxxx15の番号に用いている符号「xxx」は、具体的な値を省略した旨を示す符号であり、特定の数値に限定されるものではなく、任意の桁数の任意の数値に代えることができるものである。
(1)プローブ部Pを、車載情報処理装置21の車両CPU30が実行するアプリケーションプログラム11の処理手順のうち、車両データを取得対象とする処理を実行する位置、すなわち同処理手順において制約の少ない位置に配置することができる。よって、当該プローブ部Pを用いることによる車載情報処理装置21を通じての車両データの取得の柔軟性を、高くすることができるようになる。例えば車載情報処理装置21の車両CPU30が実行するアプリケーションプログラム11の各処理工程ごとに車両データを取得するような構成の場合、各処理工程の結果に対応する車両データしか取得することができない。しかし、本実施形態によれば、処理工程に含まれている処理手順内であるプログラムの内部にプローブ部Pを配置することによって、車載情報処理装置21の動作状態をより詳細に示す車両データを取得することができるようになる。具体的には、車載情報処理装置21のプログラムの処理単位などにかかわらず、それら処理単位を構成するソースコード内の途中の位置に、プローブ部Pを配置するようにする。これによって、プローブ部Pを介して車載情報処理装置21によって、車両データを詳細に取得することができるようになる。その結果、プローブ部Pを介することによって取得される車両データであれ、車載情報処理装置21の動作状態の解析を高い精度で行うために用いることのできる車両データとして取得することができるようになる。このため、車載情報処理装置21の不具合の原因究明などの精度などが向上するようになる。
図13は、本発明に係る車両データ取得システムを具体化した第2実施形態を示したものである。図13に示すように、本実施形態は、上記第1の実施形態に対して、車両データの授受を、携帯型記憶装置15に代えて、データ解析センタ10に設けたセンタ通信部14と、車両20に設けた車両通信部23とによって行う点が相違するものとなっている。その他の構成は同様であるため、同様の構成には同一符号を付して重複説明を省略する。
・上記各実施形態では、データ取得プログラム12全体が、車載情報処理装置21にロードやアンロードされる場合について例示した。しかしこれに限らず、図14に示すように、予めデータ取得プログラム12を車載情報処理装置21に用意しておき、取得スクリプト40のみを、携帯型記憶装置15を介して車載情報処理装置21にロードしたりアンロードしたりするようにしてもよい。これによって、データ取得プログラムの実装の自由度が向上するようになる。
Claims (14)
- 車両に搭載された車載情報処理装置を通じて車両データを取得し、取得した前記車両データを記憶装置に記憶する車両データ取得システムであって、前記車載情報処理装置には、情報処理の処理手順を実行する情報処理部が予め組み込まれ、
前記車両データ取得システムは、
前記車載情報処理装置の情報処理動作状態を利用することによって前記車両データの取得を支援すべく、前記車載情報処理装置に動的に組み込まれるデータ取得支援手段と、
前記処理手順のうちのデータ取得処理を実行する1乃至複数の位置に、無効命令として配置されるプローブ部と
を備え、
前記プローブ部は、前記データ取得支援手段からの指示によって他の命令に置き換え可能に構成され、
前記データ取得支援手段は、前記前記データ取得支援手段自身が前記車載情報処理装置に組み込まれることに伴って前記プローブ部を前記車両データの取得命令に置き換えるとともに、該置き換えによって取得した前記車両データを時系列的に前記記憶装置に記憶し、必要とされる前記車両データの取得後は、前記プローブ部を前記無効命令に再置き換えする
ことを特徴とする、車両データ取得システム。 - 前記データ取得支援手段は、前記プローブ部に対する命令の置き換えの実行の有無を、前記車両の状態に応じて判断する、
請求項1に記載の車両データ取得システム。 - 前記データ取得支援手段は、前記プローブ部に対する命令の置き換えを、前記車両が停車しているとの条件で実行する、
請求項2に記載の車両データ取得システム。 - 前記データ取得支援手段は、前記プローブ部に対する命令の置き換えを行なうことによって前記車載情報処理装置による情報処理に要する時間が、同情報処理に割り当てられている規定時間を超えると予測されるときには、前記プローブ部に対する命令の置き換えを行わない、
請求項1~3のいずれか一項に記載の車両データ取得システム。 - 前記プローブ部は、複数設けられており、
前記車載情報処理装置による情報処理に要する時間が、同情報処理に割り当てられている規定時間を超えないように、前記データ取得支援手段は、複数の前記プローブ部の中から選択した一部の前記プローブ部に対する命令の置き換えを行う
請求項1~3のいずれか一項に記載の車両データ取得システム。 - 前記データ取得支援手段は、前記プローブ部を介しての前記車両データの取得処理が、前記車載情報処理装置によって実行される情報処理に悪影響を及ぼすと判断されるとき、前記プローブ部に対する命令の置き換えを行わない、
請求項1~4のいずれか一項に記載の車両データ取得システム。 - 前記データ取得支援手段は、前記プローブ部を介しての前記車両データの取得処理が、前記車載情報処理装置における実行条件を充足しないと判断されるとき、前記プローブ部に対する命令の置き換えを行わない、
請求項1~4のいずれか一項に記載の車両データ取得システム。 - 前記データ取得支援手段には、前記車両データの取得命令が予め用意され、
前記車載情報処理装置による情報処理に要する時間が、同情報処理に割り当てられている規定時間を超えないように、前記取得命令は作成されている、
請求項1~4のいずれか一項に記載の車両データ取得システム。 - 前記データ取得支援手段は、有線通信もしくは無線通信を介して、前記車載情報処理装置に動的に組み込まれる、
請求項1~8のいずれか一項に記載の車両データ取得システム。 - 前記車載情報処理装置は、予め格納された情報処理プログラムに基づき、前記処理手順を実行するように構成され、
前記プローブ部は、前記情報処理プログラムに、無効命令として埋め込み配置され、
前記データ取得支援手段は、前記車載情報処理装置へのロードと、同車載情報処理装置からのアンロードとが可能に構成された前記車両データの取得命令を、スクリプトとして含む追加プログラムによって実現され、
前記追加プログラムが前記車載情報処理装置にロードされることに応じて、前記プローブ部は前記車両データの取得命令に置き換えられ、
必要とされる前記車両データの取得後、もしくは前記車載情報処理装置から前記追加プログラムがアンロードされることに応じて、前記プローブ部は前記無効命令に再置き換えされる、
請求項9に記載の車両データ取得システム。 - 前記記憶装置に記憶された前記車両データは、解析センタに送られ、
前記解析センタは、前記車両データの推移に基づき当該車両の状態を解析する、
請求項1~10のいずれか一項に記載の車両データ取得システム。 - 前記車両データは、無線通信を介して、前記記憶装置から前記解析センタに送られる、
請求項11に記載の車両データ取得システム。 - 車両に搭載された車載情報処理装置を通じて車両データを取得し、取得した前記車両データを記憶装置に記憶する車両データ取得方法であって、前記車載情報処理装置には、情報処理の処理手順を実行する情報処理部が予め組み込まれ、
前記車両データ取得方法は、
前記車載情報処理装置の情報処理動作状態を利用することによって前記車両データの取得を支援するデータ取得支援手段を、前記車載情報処理装置に動的に組み込む組込工程と;
前記処理手順のうちのデータ取得処理を実行する1乃至複数の位置に、無効命令として配置されたプローブ部を、前記データ取得支援手段が前記車載情報処理装置に組み込まれることに伴って、前記車両データの取得命令に置き換える置換工程であって、前記プローブ部は、前記データ取得支援手段からの指示によって、他の命令に置き換え可能に構成されることと;
前記置き換えによって取得した前記車両データを、時系列的に前記記憶装置に記憶する記憶工程と;
必要とされる前記車両データの取得後は、前記プローブ部を前記無効命令に再置き換えする再置換工程と
を備えることを特徴とする車両データ取得方法。 - 前記置換工程では、前記プローブ部に対する命令の置き換えの実行の有無は、前記車両の状態に応じて判断される、
請求項13に記載の車両データ取得方法。
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JP2012185558A (ja) * | 2011-03-03 | 2012-09-27 | Toyota Motor Corp | 車両データ取得システム及び車両データ取得方法 |
JP2015190956A (ja) * | 2014-03-28 | 2015-11-02 | 富士通テン株式会社 | 車載装置の検査システム、車載装置の検査用装置、車載装置、および、可搬型の記憶媒体 |
JP2017220135A (ja) * | 2016-06-10 | 2017-12-14 | 株式会社 日立産業制御ソリューションズ | 車載機器ログ収集システム |
JP2021140678A (ja) * | 2020-03-09 | 2021-09-16 | 株式会社東芝 | 情報処理装置 |
JP7249968B2 (ja) | 2020-03-09 | 2023-03-31 | 株式会社東芝 | 情報処理装置およびストレージ |
US11888990B2 (en) | 2020-03-09 | 2024-01-30 | Kabushiki Kaisha Toshiba | Information processing device controlling analysis of a program being executed based on a result of verification of an analysis program |
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JPWO2012049750A1 (ja) | 2014-02-24 |
EP2629204A4 (en) | 2016-08-24 |
JP5527420B2 (ja) | 2014-06-18 |
US20130190946A1 (en) | 2013-07-25 |
CN103154903B (zh) | 2015-07-22 |
RU2013121585A (ru) | 2014-11-20 |
CN103154903A (zh) | 2013-06-12 |
BR112013008769A2 (pt) | 2021-08-17 |
EP2629204A1 (en) | 2013-08-21 |
EP2629204B1 (en) | 2019-02-13 |
RU2541883C2 (ru) | 2015-02-20 |
US8880284B2 (en) | 2014-11-04 |
BR112013008769B1 (pt) | 2022-03-03 |
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