WO2013133431A1 - 通信模擬システム、通信模擬方法および車両通信装置 - Google Patents
通信模擬システム、通信模擬方法および車両通信装置 Download PDFInfo
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- WO2013133431A1 WO2013133431A1 PCT/JP2013/056534 JP2013056534W WO2013133431A1 WO 2013133431 A1 WO2013133431 A1 WO 2013133431A1 JP 2013056534 W JP2013056534 W JP 2013056534W WO 2013133431 A1 WO2013133431 A1 WO 2013133431A1
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- vehicle
- communication
- state information
- inspection
- vehicle state
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/04—Monitoring the functioning of the control system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/04—Monitoring the functioning of the control system
- B60W50/045—Monitoring control system parameters
- B60W2050/046—Monitoring control system parameters involving external transmission of data to or from the vehicle, e.g. via telemetry, satellite, Global Positioning System [GPS]
Definitions
- the present invention relates to a technique for verifying the operation of a vehicle electrical system, and more particularly to a communication simulation system, a communication simulation method, and a vehicle communication device that simulate communication performed by a vehicle electrical system.
- Vehicle communication related to learning is vehicle communication for causing a component including an ECU (Electronic Control Unit) included in the vehicle electrical system to learn (store) a communication command and an operation corresponding to the communication command in advance.
- the vehicle communication related to writing is vehicle communication for writing data necessary for normal operation of the ECU, the electrical system, or a component constituted by the ECU, the electrical system to a memory or the like of the corresponding electrical system.
- the vehicle communication related to the inspection is inspection communication for a vehicle communication device connected to the vehicle electrical system from the outside of the vehicle to verify the operating state of the vehicle electrical system and the like.
- the process of learning the operation and writing the necessary data in advance for the on-board component electrical system is required at the time of assembling the vehicle. Therefore, it is necessary to verify whether the learning and writing process can be established on the production line, and there is a demand for reducing the number of man-hours. Therefore, it is conceivable to verify the process by simulation without using an actual vehicle.
- the in-vehicle electrical component test system described in Patent Document 1 tests the operation of the in-vehicle electrical component by simulation simulating the entire vehicle, and cannot verify the feasibility of the process in the line.
- an object of the present invention is to provide a communication simulation system, a communication simulation method, and a vehicle communication device that can solve the above-described problems and can simulate communication without an actual vehicle.
- a communication simulation system is connected to a plurality of vehicle electrical systems mounted on a vehicle from the outside of the vehicle, and the operating state of each of the vehicle electrical systems.
- vehicle communication device for verifying the vehicle and the vehicle electrical system, communication processing defined in a predetermined communication definition file, and at least one type of vehicle state information indicating a vehicle state by time detected on the vehicle side
- a communication simulation system for simulating communication performed in accordance with the communication content input means for inputting the vehicle state information as communication content between the vehicle electrical system and the vehicle communication device in a step performed at a predetermined location;
- Communication recording means for recording the input vehicle state information in the vehicle condition database as vehicle conditions in association with the process, place and vehicle
- a storage means for storing a communication definition file that is the same as each communication definition file that defines communication processing executed by a plurality of electronic control units included in each of the vehicle electrical system in a predetermined process; and the selected vehicle A vehicle state information acquisition unit that acquires the vehicle state
- the communication simulation system inputs vehicle state information by the communication content input means.
- vehicle state information is information which shows the vehicle state according to time detected by the vehicle side in the process performed in a predetermined place.
- the communication content input means inputs, for example, vehicle state information detected in an inspection process performed at a plurality of different inspection locations for each vehicle.
- a communication simulation system records each vehicle state information in a vehicle condition database by a communication recording means.
- a communication simulation system memorize
- a communication simulation system acquires vehicle state information from a vehicle condition database according to the selected vehicle condition by a vehicle state information acquisition means.
- the acquired vehicle state information indicates information for each time detected at a place specified by the vehicle condition.
- a communication simulation system communicates with a vehicle communication apparatus by a communication control means.
- the communication control means reflects the vehicle state information acquired from the vehicle condition database, and performs the communication process defined in the communication definition file acquired from the storage means according to the selected process.
- the communication simulation system reproduces the vehicle state information in the process at the place specified by the selected vehicle condition. Therefore, the communication simulation system can simulate the communication state of communication performed between the vehicle electrical system mounted on the vehicle and the vehicle communication device without an actual vehicle.
- the communication in the step performed at the predetermined location is performed by the vehicle communication device for verifying the operation of the vehicle electrical system and the vehicle communication device learning.
- the communication is preferably one of learning communication for performing and writing communication for the vehicle communication device to write data.
- a communication simulation system is a vehicle communication device that is connected from the outside of a vehicle to a plurality of vehicle electrical systems mounted on the vehicle and verifies the operating state of each of the vehicle electrical systems. And between the vehicle communication device and the vehicle electrical system that are wirelessly connected to an information processing terminal device attached to a facility that manages necessary information at a predetermined inspection location, and between the vehicle communication device and the information Inspection communication performed with the processing terminal device in accordance with communication processing defined in a predetermined communication definition file and at least one type of vehicle state information indicating a vehicle state for each time detected on the vehicle side.
- a communication simulation system for simulating the vehicle electrical system, the information processing terminal device, and the vehicle communication device in an inspection process performed at a predetermined inspection place
- Communication content input means for inputting the vehicle state information as communication content
- communication recording means for recording the input vehicle state information in the vehicle condition database as vehicle conditions in association with the inspection process, inspection location, and vehicle.
- Vehicle state information acquisition means for acquiring the vehicle state information from the vehicle condition database according to the selected vehicle condition, and acquisition of the communication definition file from the storage means according to the selected inspection process In response to the communication process defined in the acquired communication definition file and the selected vehicle condition.
- Wired communication processing executed by the electronic control unit in the selected vehicle condition in the selected inspection process according to the vehicle state information acquired from the vehicle condition database, and the information processing terminal in the inspection process Communication control means for performing wireless communication processing executed by the apparatus in parallel with the vehicle communication apparatus.
- the communication simulation system inputs vehicle state information as communication contents between the vehicle electrical system, the information processing terminal device, and the vehicle communication device by the communication content input means. And a communication simulation system records each vehicle state information in a vehicle condition database by a communication recording means. And a communication simulation system memorize
- the communication control means reflects the vehicle state information acquired from the vehicle condition database, and performs the communication process defined in the communication definition file acquired from the storage means according to the selected inspection process.
- the communication simulation system includes a wired communication process executed by the electronic control unit in the inspection process at the inspection place specified by the selected vehicle condition, and a wireless communication process executed by the information processing terminal device in the inspection process. Are reproduced in parallel. Therefore, the communication simulation system simulates communication performed between the vehicle electrical system mounted on the vehicle and the vehicle communication device without an actual vehicle, and is attached to a facility that manages necessary information at a predetermined inspection place. Communication performed between the information processing terminal device and the vehicle communication device can be simulated.
- the vehicle state information is vehicle state information affected by at least one of the facility and the environment for each place.
- the communication simulation system displays the communication state of communication performed between the vehicle electrical system mounted on the vehicle and the vehicle communication device without an actual vehicle, even if the vehicle state differs depending on the location. Can be simulated.
- the communication control unit uses at least one type of virtual vehicle state information that is generated by reflecting a change amount assumed for the at least one type of vehicle state information. Thus, it is preferable to perform communication processing of the selected vehicle condition with the vehicle communication device.
- the communication simulation system can simulate communication using virtual vehicle state information that reflects an assumed change amount with respect to vehicle state information acquired from a real vehicle in the past. Therefore, the feasibility of the process can be verified not only by simulation faithful to data acquired in the past but also by simulation in which acquired data is changed flexibly.
- the virtual vehicle state information is a vehicle of a similar model similar to the vehicle state information included in the communication content detected by the vehicle of one model and the one model.
- the vehicle status information included in the communication content detected by the vehicle of the one model is expressed as a numerical value using a predetermined numerical value conversion rule obtained in advance from the comparison with the vehicle status information included in the detected communication content. It is generated by conversion, and the communication control means uses the virtual vehicle state information, so that another model vehicle reflecting the amount of change changed from the one model responds to a request from the vehicle communication device. It is preferable to simulate the communication contents to be performed.
- the virtual vehicle state information is virtual communication information generated in association with the vehicle state information included in communication content detected by the vehicle, and the communication control It is preferable that the means uses the virtual vehicle state information to simulate a communication content in which a vehicle in which a communication content including the vehicle state information is detected responds to a request from the vehicle communication device.
- the communication simulation system provides a predetermined specific command from the vehicle communication device with respect to the vehicle state information in which the virtual vehicle state information is included in the communication content detected by the vehicle.
- a vehicle in which communication content including the vehicle state information is detected by the communication control means using the virtual vehicle state information is generated by a numerical conversion that adds or subtracts a numerical value required by the vehicle communication device. It is preferable to simulate the content of communication in response to the specific command from.
- a communication simulation method is connected to a plurality of vehicle electrical systems mounted on a vehicle from outside the vehicle, and Between the vehicle communication device that verifies the operation state and the vehicle electrical system, at least one type of vehicle state that indicates a communication process defined by a predetermined communication definition file and a vehicle state by time detected on the vehicle side
- a communication simulation method by a communication simulation system for simulating communication performed according to information, wherein the communication simulation system performs communication performed by a plurality of electronic control units included in each of the vehicle electrical system in a predetermined process
- a storage unit that stores the same communication definition file as each communication definition file that defines the processing, and a processing unit,
- a communication content input step for inputting the vehicle status information as communication content between the vehicle electrical system and the vehicle communication device in a step performed at a predetermined location, and the input vehicle status information as the process, location
- a communication recording step of recording in the vehicle condition database as a vehicle condition in association with the vehicle, and a
- the communication definition file is acquired from the storage unit according to the process, and the communication process specified in the acquired communication definition file is acquired from the vehicle condition database according to the selected vehicle condition.
- the communication processing of the selected vehicle condition in the selected process is performed in advance. And executes a communication control step performed with the vehicle communication device.
- the communication in the step performed at the predetermined place is performed by the vehicle communication device in order to verify the operation of the vehicle electrical system, and the vehicle communication device learns.
- the communication is preferably one of learning communication for performing and writing communication for the vehicle communication device to write data.
- the communication simulation method is a vehicle communication device that is connected from the outside of a vehicle to a plurality of vehicle electrical systems mounted on the vehicle and verifies the operating state of each of the vehicle electrical systems. And between the vehicle communication device and the vehicle electrical system that are wirelessly connected to an information processing terminal device attached to a facility that manages necessary information at a predetermined inspection location, and between the vehicle communication device and the information Inspection communication performed with the processing terminal device in accordance with communication processing defined in a predetermined communication definition file and at least one type of vehicle state information indicating a vehicle state for each time detected on the vehicle side.
- a communication simulation method by a simulated communication simulation system wherein the communication simulation system includes a plurality of electronic control units included in the respective vehicle electrical system.
- a storage means for storing the same communication definition file as each communication definition file that defines a communication process executed by the information processing terminal device in a predetermined inspection process
- the processing means A communication content input step for inputting the vehicle state information as communication content between the vehicle electrical system and the information processing terminal device and the vehicle communication device in the inspection process performed at the inspection place, and the input vehicle state information, A communication recording step of recording in the vehicle condition database as a vehicle condition in association with the inspection process, the inspection location, and the vehicle, and acquiring the vehicle state information from the vehicle condition database according to the selected vehicle condition And acquiring the communication definition file from the storage means according to the selected inspection step, The selected in the selected inspection step according to the communication process defined in the acquired communication definition file and the vehicle state information acquired from the vehicle condition database according to the selected vehicle condition.
- a communication control step in which a wired communication process executed by the electronic control unit in the vehicle condition and a wireless communication process executed by the information processing terminal device in the inspection step are performed in parallel with the vehicle communication device; It is characterized
- the vehicle state information is vehicle state information that is affected by at least one of equipment and environment for each location.
- the communication simulation method according to the present invention is such that the processing means generates at least one kind of reflection that is generated in the communication control step by reflecting an assumed change amount with respect to the at least one kind of vehicle state information. It is preferable to perform communication processing of the selected vehicle condition with the vehicle communication device using virtual vehicle state information.
- the virtual vehicle state information is a vehicle of a similar model similar to the vehicle state information included in the communication content detected by a vehicle of one model and the one model.
- the vehicle status information included in the communication content detected by the vehicle of the one model is expressed as a numerical value using a predetermined numerical value conversion rule obtained in advance from the comparison with the vehicle status information included in the detected communication content.
- the processing means uses the virtual vehicle state information in the communication control step, another type of vehicle that reflects the amount of change changed from the one model is generated by the vehicle communication. It is preferable to simulate the contents of communication in response to a request from the device.
- the virtual vehicle state information is virtual communication information generated in association with the vehicle state information included in the communication content detected by the vehicle, and the processing means
- the vehicle in which the communication content including the vehicle state information is detected simulates the communication content responding to the request from the vehicle communication device. preferable.
- the communication simulation method includes a predetermined specific command from the vehicle communication device for the vehicle state information in which the virtual vehicle state information is included in communication content detected by the vehicle.
- the communication content including the vehicle state information is detected by the processing means using the virtual vehicle state information in the communication control step. It is preferable that the vehicle simulates the communication content in response to the specific command from the vehicle communication device.
- a vehicle communication device is connected to a plurality of vehicle electrical systems mounted on a vehicle by wired communication from the outside of the vehicle via a vehicle interface.
- a vehicle communication device that is wirelessly connected to an information processing terminal device attached to a facility that manages necessary information at a place, and includes a communication simulation system interface that is connected to be able to communicate with the communication simulation system.
- An inquiry as to whether or not the established process is established based on the vehicle state information at a predetermined location is transmitted to the communication simulation system via the communication simulation system interface, and a response to the inquiry is transmitted as the communication simulation.
- the information is received from the communication simulation system via a system interface.
- the vehicle communication device includes a vehicle interface for connecting to a plurality of vehicle electrical systems mounted on the vehicle and a communication simulation system interface for connecting to the communication simulation system. Prepare. Accordingly, the vehicle communication device simulates communication with the vehicle and communication with the information processing terminal device via the vehicle interface by communicating with the communication simulation system via the communication simulation system interface. be able to.
- communication can be simulated without an actual vehicle. Therefore, in the development of a vehicle communication device, verification without an actual vehicle and communication changes for each production site can be verified. As a result, the development cost of the vehicle communication device can be reduced and the development period can be shortened.
- FIG. 1 It is a schematic diagram of the vehicle communication apparatus which concerns on embodiment of this invention, Comprising: (a) has shown the vehicle communication apparatus connected to the vehicle, (b) has shown the vehicle communication apparatus connected to the vehicle simulator.
- It is a conceptual diagram of an inspection process (a) is a vehicle state necessary for the inspection process, (b) is an engine state necessary for the inspection process at a predetermined line, and (c) is a shortened line. The engine state required for the inspection process is shown.
- Embodiments for carrying out the present invention with reference to the drawings are as follows. 1. Outline of vehicle communication device 2. Outline of the electronic control system inside the vehicle; 3. Outline of communication simulation method 4. Operation example of communication simulation system 5. Configuration example of communication simulation system 6. Specific example of operation of communication simulation system This will be described in detail in each chapter of another specific example of the operation of the communication simulation system.
- a vehicle communication device 10 As shown in FIGS. 1A and 1B, a vehicle communication device 10 according to an embodiment of the present invention includes a key operation unit 15 and a display 16 for vehicle diagnosis by an internal computer, and a gripping unit 17. And can be suspended by the gripping portion 17.
- the vehicle communication device 10 is communicably connected to the vehicle 20 via an OBD2 (On-Board Diagnostics 2) standard vehicle interface 11 as shown in FIG.
- OBD2 On-Board Diagnostics 2
- the vehicle interface 11 is provided with an OBD2 standard connector (male) at the end of the cable.
- the OBD2 standard connector of the vehicle interface 11 is detachably connected to the OBD2 standard connector (female) on the vehicle side.
- the vehicle communication device 10 is connected from the outside of the vehicle to a plurality of vehicle electrical systems (hereinafter simply referred to as electrical system) mounted on the vehicle 20 to verify the operating state of each electrical system.
- the vehicle 20 includes a plurality of electrical equipment systems, and communication is performed between the electrical equipment system and the vehicle communication device 10.
- the vehicle 20 will be described as including two electrical systems 21 and 22.
- vehicle communication related to learning, writing, and inspection is performed in a predetermined process at a predetermined location for the vehicle electrical system.
- vehicle communication (inspection communication) related to inspection will be described below. In the assembly of parts such as a vehicle electrical system, vehicle communication for learning work and writing work is performed, but even in these processes, it can be applied similarly to the inspection process.
- the vehicle communication device 10 is communicably connected to the vehicle 20 via the vehicle interface 11 when performing a predetermined inspection process at a predetermined inspection place.
- FIG. 1A shows a case where the vehicle 20 is inspected on the conveyor 19 in the line, but there is also a case where the vehicle 20 is inspected after getting off the conveyor 19.
- the vehicle communication device 10 transmits a request signal (hereinafter referred to as a request) in the vehicle inspection process to the vehicle 20 via the vehicle interface 11, and a response signal (hereinafter referred to as a response signal in the inspection process). , Response) from the vehicle 20. Thereby, communication is performed between the vehicle communication device 10 and the vehicle 20.
- a request signal hereinafter referred to as a request
- a response signal hereinafter referred to as a response signal in the inspection process
- the request is, for example, a request for reading vehicle information (including vehicle identification information and vehicle status information described later), a request for writing various information, a security release request, a forced drive request, a self-diagnosis request, and a learning start request.
- Responses include, for example, vehicle information (vehicle identification information, vehicle status information described later), various information write completion / uncompleted responses, security cancellation / unreleased responses, self-diagnosis executable / A response indicating that execution is not possible, a response indicating whether execution of learning is possible / not possible, a response indicating whether the inspection process has been established, and the like. Note that the response from the ECU of the vehicle varies depending on vehicle state information described later.
- the information processing terminal device 18 attached to the equipment is provided.
- the information processing terminal device 18 manages information corresponding to the inspection locations.
- the information processing terminal device 18 includes, for example, a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), an HDD (Hard Disk Drive), an input / output interface, and the like.
- the information processing terminal device 18 is communicably connected to the vehicle communication device 10 wirelessly.
- the information processing terminal device 18 stores a communication definition file 181 in storage means (not shown).
- the communication definition file 181 indicates a file that defines communication processing performed with the vehicle communication device 10 in a predetermined inspection process.
- the information processing terminal device 18 stores and manages identification information, names, specifications, detection values, and the like (hereinafter referred to as facility information) of various sensors as information necessary for each inspection item at the inspection place.
- the information processing terminal device 18 also stores and manages speed information and the like of a transport device such as a belt conveyor.
- the vehicle communication device 10 is connected to an information processing terminal device 18 attached to equipment for managing necessary information at a predetermined inspection place so as to be able to communicate wirelessly.
- the vehicle communication device 10 acquires facility information related to the wired communication from the information processing terminal device 18 by wireless communication while actually performing wired communication with the vehicle 20.
- the vehicle communication device 10 is communicably connected to the vehicle simulator 1 via a communication simulation system interface 12 and a communication simulation device 14 as shown in FIG.
- the communication simulation system interface 12 is connected to the communication simulation device 14 via a LAN (Local Area Network) such as Ethernet (registered trademark).
- the communication simulation system interface 12 is provided with, for example, an RJ45 connector at the end of the cable.
- the RJ45 connector of the communication simulation system interface 12 is detachably connected to a corresponding connector insertion port on the communication simulation device 14 side.
- the communication simulation device 14 is connected to the vehicle simulator 1 by USB (Universal Serial Bus), for example.
- USB Universal Serial Bus
- the communication simulation device 14 is an electrical device device for connecting the vehicle simulator 1 configured by, for example, a general personal computer so as to be communicable with the vehicle communication device 10.
- the communication simulation device 14 is connected to an external power source (not shown) and can operate independently of the vehicle simulator 1.
- the communication simulation device 14 may be configured to have a function of a logger 190 (see FIG. 5) described later. In FIG. 1B, the vehicle interface 11 is omitted.
- FIG. 1B one form of the communication simulation system 100 (see FIGS. 3 to 5) according to the embodiment of the present invention is referred to as a vehicle simulator 1 for simplicity.
- the vehicle simulator 1 in FIG. 1B can be configured by a general computer in which a program for functioning as a communication simulation system is installed. Details of the communication simulation system 100 will be described later.
- the vehicle simulator 1 simulates communication corresponding to a specific vehicle state of a certain vehicle selected by, for example, the communication simulation system 100 shown in FIG. Further, at least one type of vehicle state for each time detected on the vehicle side in the line is referred to as vehicle state information.
- vehicle state information is shown in FIG. 1B as a graph with time on the horizontal axis. The example of the vehicle state shown in this graph indicates that the engine starts at a certain time (IG_ON) and stops after a predetermined period (IG_OFF), as indicated by a broken line. At this time, the vehicle speed repeats a cycle of rising, falling, and 0 (stop) twice during a predetermined period of engine operation. At this time, the engine water temperature gradually increases in conjunction with the engine operation.
- FIG. 1B illustrates three types of vehicle states that change from moment to moment, but this is only an example.
- vehicle state information such as time change of vehicle speed and time change of water temperature is information affected by at least one of equipment and environment for each inspection place.
- the equipment at the inspection location includes, for example, a line for performing an inspection process. The length and structure of the line influence the time change of the vehicle speed, for example.
- the environment of the inspection location includes, for example, weather conditions such as temperature. The temperature affects the time change of the engine water temperature.
- the vehicle communication device 10 transmits a request in the vehicle inspection process to the vehicle simulator 1 via the communication simulation system interface 12 and the communication simulation device 14, and a response in the inspection process. Is received from the vehicle simulator 1.
- the vehicle simulator 1 simulates a communication state as if communication is being performed between the vehicle communication device 10 and the vehicle 20.
- the vehicle communication device 10 communicates with the communication simulation system 100 (see FIG. 3 to FIG. 5) in the inspection process, it is as if it is attached to the facility in parallel with the vehicle 20 while performing wired communication. Communication as if wirelessly communicating with the information processing terminal device 18 (see FIG. 1A) can be reproduced by wired communication with the communication simulation system 100. In this sense, the vehicle simulator 1 also functions as an equipment simulator.
- FIG. 2 shows a configuration example of an electronic control system inside the vehicle of the automobile to be inspected.
- the vehicle 20 mainly includes an electrical system 21, an electrical system 22, a sensor group 23, a communication interface 24, and an operation unit 25, as shown in FIG.
- the electrical system 21 includes a plurality of electronic control units (ECU: Electronic Control Unit).
- ECU Electronic Control Unit
- the electrical system 21 includes two ECUs 31 and 32 and the electrical system 22 includes two ECUs 33 and 34.
- the ECU 31 represents, for example, an engine electronic control system
- the ECU 32 represents, for example, a transmission electronic control system
- the ECU 33 represents, for example, an audio electronic control system
- the ECU 34 represents, for example, an air conditioner electronic control system.
- more than 70 ECUs are mounted on the current latest automobile.
- Each ECU is connected to an in-vehicle LAN, and is configured to be able to communicate with the outside of the vehicle via the in-vehicle LAN and the communication interface 24.
- the communication interface 24 is an OBD2 standard interface.
- the vehicle interface 11 of the vehicle communication device 10 is detachably connected to the communication interface 24 from the outside of the vehicle.
- the sensor group 23 represents a plurality of sensors collectively in a form for explanation, and each sensor is actually arranged at a location corresponding to its function.
- the sensor group 23 includes three sensors 51, 52, and 53.
- the sensor 51 is a vehicle speed detection sensor
- the sensor 52 is a temperature sensor that detects the engine water temperature
- the sensor 53 is a steering angle sensor, for example.
- the operation unit 25 is a formally representing a plurality of switches and the like collectively for explanation, and includes a steering and an ignition switch, for example.
- the sensor 53 detects the steering angle.
- an ON signal of the ignition switch is output from the operation unit 25 to the electrical systems 21 and 22.
- an OFF signal of the ignition switch is output from the operation unit 25 to the electrical systems 21 and 22.
- the communication protocol may be different for each electrical system.
- the electrical system 21 may correspond to CAN communication
- the electrical system 22 may correspond to, for example, KWP2000 communication.
- KWP2000 complies with the international standard (ISO14230) for automotive fault diagnosis connectors.
- CAN Controller Area Network
- OBD2 International Standard (ISO15765)
- the communication protocol may be serial communication conforming to the international standard (ISO9141) or Ethernet (registered trademark).
- the ECU in each electrical system includes, for example, a microprocessor 41, an input / output unit 42, a communication module 43, and a communication definition file 44, as shown in FIG.
- the microprocessor 41 inputs a request from the outside of the vehicle via the input / output unit 42 and outputs a response to the outside of the vehicle via the input / output unit 42.
- the communication definition file 44 indicates a file that defines communication processing executed by the plurality of ECUs 31 to 34 included in each of the electrical systems 21 and 22 in a predetermined inspection process.
- the ECU 31 is, for example, an electronic control system for an engine, for example, the ECU 31 holds a communication definition file 44 for each communication corresponding to a legal inspection of an emission standard.
- FIG. 2 a plurality of communication definition files are collectively shown. In FIG. 2, only the internal components of the ECU 31 are shown, but the ECUs 32 to 34 included in the electrical systems 21 and 22 include similar components.
- vehicle status information such as vehicle speed, water temperature, and engine status (IG_ON / IG_OFF) detected on the vehicle side during a predetermined inspection process at a predetermined inspection location for a vehicle of a predetermined vehicle type is one vehicle condition. It is.
- the communication simulation system 100 stores a vehicle condition database 121 as shown in FIG.
- the vehicle condition database 121 stores vehicle conditions for each inspection location and for each vehicle.
- the inspection place is a manufacturing facility 1, a manufacturing facility 2,...
- the vehicle is a vehicle 1, a vehicle 2,.
- the communication simulation system 100 uses ECU data 5 for processing as shown in FIG.
- the ECU data 5 represents data actually used for processing in the communication definition file 44 held by the ECUs 31 to 34 (see FIG. 2) of the vehicle 20.
- the ECU data 5 is stored in advance in the communication simulation system 100.
- the ECU data 5 may be input from the outside each time processing is performed.
- the communication simulation system 100 acquires the vehicle condition of the inspection place line (step S1). Specifically, the communication simulation system 100 inputs vehicle state information as communication contents between the electrical system and the vehicle communication device in an inspection process performed at a predetermined inspection place (communication content input step). And the communication simulation system 100 records the input vehicle state information in the vehicle condition database 121 (communication recording step).
- the communication simulation system 100 selects vehicle conditions (step S2). Thereby, the communication simulation system 100 acquires vehicle conditions (vehicle state information) from the vehicle condition database 121 according to the selected vehicle conditions (vehicle state information acquisition step). As an example, a graph 3 of a vehicle condition of a line reproduced when a vehicle condition related to the vehicle 1 of the factory 2 is selected from the vehicle condition database 121 is illustrated.
- the selection of vehicle conditions can be realized either manually or automatically.
- a user (operator) of the communication simulation system 100 executes an operation of selecting a desired vehicle condition using the input device 150 each time.
- automatic selection it is programmed to sequentially select predetermined vehicle conditions, and the user inputs a command for instructing the start of processing.
- the communication simulation system 100 uses the ECU data 5 to reflect the vehicle conditions selected from the vehicle condition database 121 in the ECU specifications (step S3). That is, the communication simulation system 100 functions as the vehicle simulator 1 that performs communication with the vehicle communication device 10 according to the communication process defined in the ECU data 5 and the selected vehicle condition (inspection control step). .
- step S3 the vehicle condition graph 3 of the reproduced line may be displayed on the display device 160, and after the user confirms the screen display, the corresponding vehicle condition may be reflected in the ECU specifications.
- the user can manually set the vehicle conditions selected from the vehicle condition database 121 on the screen of the display device 160 (step S11).
- the graph 4 after the user has edited the graph 3 of the vehicle condition of the reproduced line is illustrated.
- the graph 4 is different from the graph 3 in that information on the number of revolutions of the engine per minute is added by editing and a process in which a part of the rising curve of the water temperature is changed.
- the communication simulation system 100 uses the ECU data 5 to reflect the user-edited vehicle conditions in the ECU specifications (step S12). That is, the communication simulation system 100 functions as the vehicle simulator 1 that performs communication with the vehicle communication device 10 in accordance with the communication process defined in the ECU data 5 and the user-edited vehicle conditions. Accordingly, it is possible to examine whether the inspection process is established under a condition different from the vehicle condition related to the vehicle 1 of the manufacturing facility 2 selected from the vehicle condition database 121. According to this, it is possible to estimate the influence before the line is improved.
- the user edits the ECU data 5 which is data designed to be actually used by the ECU of the vehicle, and the edited ECU data is changed to the selected vehicle condition or the edited vehicle condition. You may make it reflect.
- FIG. 4 a conceptual diagram of inspection locations (manufacturer 1, manufactory 2,..., Manufactory N) is schematically shown on the left side of the diagram of FIG. 4.
- the production line consists of a line for the entire assembly process (assembly line) that assembles the car body into a finished vehicle, and a series of inspection processes that perform legal inspections before shipment of the finished vehicle. Line (inspection line).
- inspection process VQ When referring to the whole of a series of assembly processes performed in a factory, it is expressed as an assembly process AF, and the reference numerals are omitted for many subdivided assembly processes included in the assembly process AF.
- inspection process VQ When referring to the whole of a series of inspection processes performed in a manufacturing facility, it is denoted as inspection process VQ, and reference numerals are omitted for a number of subdivided inspection processes included in this inspection process VQ.
- the inspection process VQ includes an inspection process that requires the vehicle communication device 10 to be connected to the vehicle and an inspection step that is performed by removing the vehicle communication device 10 from the vehicle.
- the inspection process VQ includes an inspection process performed on a vehicle on a belt conveyor (hereinafter, simply referred to as “commercial conveyor” or “conveyor”) for inspecting merchantability, and the vehicle descends from the merchandise conveyor to stop or slow And an inspection process performed during traveling.
- the inspection process VQ includes, for example, inspection of merchantability of engines, brakes, steering, sensors, etc., inspection of legal items, inspection of lamps such as headlights, inspection of transmissions, inspection of audio and air conditioners, etc. Inspection, waterproof inspection, etc. are included. Among these, for example, in the wheel inspection, the engine is stopped and the wheel alignment (alignment of the wheels) is confirmed by a dedicated measuring machine called SWAT (Static wheel aliment tester).
- SWAT Static wheel aliment tester
- the waterproof inspection is an inspection performed in a shower test facility (shower tester) almost at the final stage of the inspection process VQ. Therefore, the vehicle communication device 10 is removed from the vehicle before the shower tester.
- FIG. 4 is a schematic diagram schematically showing the line layout of an inspection line, which is a facility of the manufacturing facility N, for example, on the right side of FIG.
- a line layout 6 shown in FIG. 4 is an example of an image displayed on the display of the communication simulation system 100.
- the vehicle 20 entering the inspection line from the assembly line performs inspection on the merchandise conveyor while moving straight to the right in FIG. And after getting off the merchandise conveyor, inspection such as lamp inspection and wheel alignment is sequentially performed until turning left three times. Then, after the third left turn, the vehicle 20 passes the shower tester 13.
- the communication simulation system 100 uses the vehicle ECU data 5 as shown in step S3 of FIG. By reflecting the vehicle condition graph 3) in the ECU specifications, for example, whether or not the inspection process similar to that of the manufacturing plant 1 line is established in the manufacturing plant N line can be examined without an actual vehicle. If the relevant inspection process is not established in the line of the manufacturing facility N, a simulation for changing the length of the merchandise conveyor in the line layout 6 or changing the layout itself can be performed without an actual vehicle. . Specific examples thereof will be described later.
- FIG. 5 a configuration example of the communication simulation system according to the embodiment of the present invention will be described with reference to FIG. 5 (refer to FIGS. 1 to 4 as appropriate).
- the timing related to the communication simulation system 100 differs between the vehicle communication device 10a and the vehicle communication device 10b.
- the communication simulation system 100 includes, for example, a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), a hard disk drive (HDD), an input / output interface, and the like, as with a general computer. ing. As illustrated in FIG. 5, the communication simulation system 100 mainly includes a communication interface 110, an input / output interface 111, a storage unit 120, and a processing unit 130.
- CPU central processing unit
- ROM read only memory
- RAM random access memory
- HDD hard disk drive
- the communication simulation system 100 mainly includes a communication interface 110, an input / output interface 111, a storage unit 120, and a processing unit 130.
- the communication interface 110 functions as a means for performing communication when the communication simulation system 100 communicates with the vehicle communication device 10b as the vehicle simulator 1 (see FIG. 3).
- the communication interface 110 includes, for example, a USB interface corresponding to the communication simulation device 14 to which the communication simulation system interface 12 of the vehicle communication device 10b is connected.
- the communication interface 110 collects communication contents between the vehicle electrical system and the vehicle communication device 10a in the inspection process performed at a predetermined inspection place (communication log data 2: communication log data 2: when the communication log data 2 (see FIG. 3) is collected. It functions as communication content input means for inputting vehicle conditions as shown in FIG. In the present embodiment, vehicle conditions are input from the vehicle communication device 10 a via the communication interface 110 via the logger 190. For this reason, the logger 190 includes an interface corresponding to, for example, a USB connector.
- the logger 190 can operate independently of the communication simulation system 100 by being connected to an external power source (not shown).
- the logger 190 includes an OBD2 connector (female) so as to correspond to the OBD2 connector (male) of the vehicle interface 11 of the vehicle communication device 10a.
- the logger 190 has a function of scanning the communication log data 2 connected to the vehicle communication device 10a via the OBD2 connector and stored in the vehicle communication device 10a, and a function of storing the scan data.
- the logger 190 includes a USB connector cable and is connected to the communication simulation system 100.
- the communication simulation system 100 acquires scan data stored in the logger 190 as vehicle conditions via the USB connector cable and the communication interface 110.
- the input / output interface 111 is an interface for inputting a command or data from the input device 150 and outputting data or the like to the display device 160.
- the user uses the input device 150 (step S2: see FIG. 3).
- the user uses the input device 150 (step S11: FIG. 3).
- the input device 150 includes, for example, a mouse, a keyboard, a touch panel, a disk drive device, and the like.
- the display device 160 is configured by a liquid crystal display, for example.
- the storage unit (storage unit) 120 is constituted by, for example, a general hard disk or memory.
- the storage unit 120 stores a program for causing the processing unit 130 to function, an inspection program, various data stored in advance by the processing unit 130, data to be temporarily stored, and the like.
- the storage unit 120 stores, for example, a vehicle condition database 121, a communication definition file 122, and a communication definition file 123.
- the vehicle condition database 121 stores input vehicle state information, an inspection process, an inspection place, and a vehicle in association with each other as vehicle conditions.
- the vehicle condition database 121 is a database similar to that illustrated in FIG.
- the communication definition file 122 is the same communication definition file as each communication definition file 44 that defines communication processing executed by the ECUs 31 and 32 included in the electrical system 21 (see FIG. 2) of the vehicle 20 in a predetermined inspection process. Show. FIG. 5 shows only one representative.
- the selected communication definition file 122 is the ECU data 5 shown in FIG.
- the communication definition file 123 is the same communication definition file as each communication definition file 44 that defines communication processing executed by the ECUs 33 and 34 included in the electrical system 22 (see FIG. 2) of the vehicle 20 in a predetermined inspection process. Show. FIG. 5 shows only one representative.
- the selected communication definition file 123 is the ECU data 5 shown in FIG.
- each inspection program includes one inspection processing unit (hereinafter referred to as inspection logic) for determining pass / fail in the inspection, or includes a plurality of inspection logics. Therefore, in practice, a large number of communication definition files are stored in the storage unit 120 in correspondence with these inspection logics.
- the vehicle condition database 121 and each communication definition file may be stored in the same storage unit, or may be separately stored in other storage units.
- the processing unit (processing unit) 130 includes, for example, a CPU and the like. As illustrated in FIG. 5, the communication recording unit 131, the vehicle state information acquisition unit 132, the communication control unit 133, and the process editing unit 134, It was decided to prepare.
- the communication recording means 131 records the communication log data 2 (see FIG. 3) input from the communication interface 110 in the vehicle condition database 121 as vehicle conditions (vehicle state information).
- the communication recording unit 131 records the input vehicle state information in the vehicle condition database 121 in association with the inspection process, the inspection location, and the vehicle.
- the vehicle state information acquisition unit 132 acquires vehicle conditions (vehicle state information) from the vehicle condition database 121 according to the selected vehicle condition.
- vehicle conditions (vehicle state information) acquired here are output to the communication control means 133.
- the selection of vehicle conditions can be realized by either manual selection or automatic selection.
- the communication control unit 133 acquires a communication definition file from the storage unit 120 in accordance with the selected inspection process, the communication process defined in the acquired communication definition file (ECU data 5: see FIG. 3), vehicle status Communication is performed with the vehicle communication device 10b via the communication simulation device 14 in accordance with vehicle conditions (vehicle state information) acquired from the vehicle condition database 121 by the information acquisition means 132.
- the communication control unit 133 includes a request reception unit 141, a determination unit 142, and a response unit 143.
- the request receiving means 141 sends a request signal (request) in the vehicle inspection process from the vehicle communication device 10b via the communication simulation system interface 12 (see FIG. 1B), the communication simulation device 14 and the communication interface 110.
- the request includes, for example, a vehicle identification information read request, a vehicle state information read request, various information write request, a security release request, a forced drive request, a self-diagnosis, as described with reference to FIG. Request, learning start request, inspection process verification request, etc.
- the request received here is output to the determination unit 142.
- the determination unit 142 determines the type of the accepted request.
- the determination unit 142 acquires a communication definition file from the storage unit 120 according to the type of request.
- the acquired communication definition file is output to the response means 143.
- the determination unit 142 determines whether or not self-diagnosis or learning start can be executed according to a predetermined execution determination criterion.
- the execution result / non-executable determination result is output to the response means 143.
- the determination unit 142 determines whether or not the inspection process is established according to a predetermined establishment criterion, and determines whether the inspection process is established or not. It outputs to the response means 143.
- the response means 143 generates a response signal (response) for the accepted request in accordance with the communication definition file, via the communication interface 110, the communication simulation device 14, and the communication simulation system interface 12 (see FIG. 1B). It transmits to the vehicle communication apparatus 10b.
- the response unit 143 similarly transmits a determination result indicating whether the self-diagnosis or learning start is executable or not.
- the response unit 143 also transmits a determination result of whether the inspection process is established / not established.
- the processing editing unit 134 processes or edits the vehicle condition selected from the vehicle condition database 121 in accordance with the information processing operation or editing operation from the input device 150.
- editing means adding new data to the vehicle condition database 121 from the outside, rearranging or deleting stored data.
- the information processing means changing at least a part of data already stored in the vehicle condition database 121, generating new data using at least a part of the data, It means to add as simple data.
- An example of processing and editing is shown in step S11 (FIG. 3).
- the operation of the communication simulation system 100 will be sequentially described by taking three specific examples.
- the communication simulation system 100 is a vehicle simulator 1 that is one form thereof. Will be described.
- the first operation example is an operation example in a case where the request type received by the vehicle simulator 1 is a verification request for an inspection process related to learning of the steering angle sensor.
- the vehicle simulator 1 uses a line including a conveyor as speed information (vehicle state information) detected at the manufacturing factories 1 to N shown in FIG. 4 as the first to Nth inspection locations for a predetermined vehicle.
- the vehicle speed and the engine speed are stored.
- the steering steering angle sensor is inspected for this vehicle with both the left and right wheels on the merchandise conveyor. In manufacturing plant 2, this inspection step is performed. Absent.
- the factory 2 also has a plan to carry out the inspection process of the steering angle sensor.
- the vehicle communication device 10 inquires of the vehicle simulator 1 by a verification request (simply called “request”) whether or not the inspection process for learning the steering angle sensor is established on the inspection line of the manufacturing facility 2. This request is sent periodically and repeatedly.
- the predetermined determination criterion is that the vehicle speed is zero. This is because learning of the steering angle sensor cannot be started unless the vehicle is stopped.
- FIG. 6 is a conceptual diagram of the first operation example, where (a) is the operation of the vehicle communication device, (b) is the operation of the vehicle simulator, (c) is the time change of the vehicle condition of the inspection line of the manufacturing facility 2, (D) has shown the vehicle on the line corresponding to the vehicle conditions of the inspection line of the manufacturing plant 2.
- FIG. 6 is a conceptual diagram of the first operation example, where (a) is the operation of the vehicle communication device, (b) is the operation of the vehicle simulator, (c) is the time change of the vehicle condition of the inspection line of the manufacturing facility 2, (D) has shown the vehicle on the line corresponding to the vehicle conditions of the inspection line of the manufacturing plant 2.
- the manufacturing facility 2 includes a one-side conveyor 191 as a merchandise conveyor in the line of the inspection process VQ following the assembly process AF.
- the vehicle on the one-side conveyor 191 is stationary with one of the left and right wheels on the conveyor, and the other wheel is grounded to the floor and is driven by the movement of the conveyor. The vehicle travels on the floor after getting off the one-side conveyor 191.
- the vehicle simulator 1 performs communication with the vehicle communication device 10 by simulating the vehicle state of the vehicle that changes from moment to moment.
- the response 204 is generated by reflecting.
- the vehicle condition 203 is a vehicle speed (for example, 3 km / h) and a rotation speed (0 rpm) as shown in FIG. Therefore, as shown in FIG. 6A, the vehicle communication device 10 receives a negative response 205 indicating failure in this inspection process.
- the response 225 received by the vehicle communication device 10 is an affirmative response indicating establishment of the inspection process. This is because the vehicle condition 223 is a vehicle speed (0 km / h) and a rotation speed (0 rpm) as shown in FIG.
- the vehicle simulator 1 when used as in the present embodiment, such a situation can be prevented in advance. Further, according to the vehicle simulator 1, for example, when a new line is installed, even if the merchandise conveyor is formed by a one-side conveyor, for example, only the location of the inspection process of the steering angle sensor is changed to an executable position. Thus, it is possible to realize a low manufacturing cost while maintaining high quality. Furthermore, the vehicle simulator 1 of the present embodiment can exhibit the same effect in an inspection place having a different line form in addition to a manufacturing facility in which the merchandise conveyor is a one-side conveyor.
- the second operation example is an operation example in the case where the type of request received by the vehicle simulator 1 is a verification request for an inspection process related to engine emission regulations (engine idle check). (Premise of the second operation example) Differences from the premise of the first operation example are as follows.
- the vehicle simulator 1 stores the engine water temperature in addition to the vehicle speed and the engine rotation speed on the line including the conveyor as vehicle state information detected by the factory 1 to factory N for a predetermined vehicle.
- an inspection process of an engine idle check is carried out on the merchandise conveyor for this vehicle, but in the manufacturing facility 3, this inspection process is not performed. It is assumed that there is a plan to conduct an engine idle check inspection process at Mfg. 3 in the future.
- the length of the inspection line of the manufacturing facility 3 is equal to the length of the inspection line of the manufacturing facility 1.
- Factory 3 is located in a cold area where the temperature is much lower than Factory 1.
- the vehicle communication device 10 inquires at the request whether or not the engine idle check inspection process is established in the inspection line of the factory 3.
- the predetermined determination criterion is that both the vehicle speed when the engine is idle is 0 and the water temperature is 50 ° C. or higher. These are the conditions under which inspection can be started.
- FIG. 7 is a conceptual diagram of the second operation example, where (a) is the operation of the vehicle communication device, (b) is the operation of the vehicle simulator, (c) is the time change of the vehicle condition of the inspection line of the factory 3, (D) has shown the vehicle on the line corresponding to the vehicle conditions of the inspection line of the manufacturing plant 3.
- FIG. 7 is a conceptual diagram of the second operation example, where (a) is the operation of the vehicle communication device, (b) is the operation of the vehicle simulator, (c) is the time change of the vehicle condition of the inspection line of the factory 3, (D) has shown the vehicle on the line corresponding to the vehicle conditions of the inspection line of the manufacturing plant 3.
- FIG. 7 is a conceptual diagram of the second operation example, where (a) is the operation of the vehicle communication device, (b) is the operation of the vehicle simulator, (c) is the time change of the vehicle condition of the inspection line of the factory 3, (D) has shown the vehicle on the line corresponding to the vehicle conditions of the inspection line of the manufacturing plant 3.
- both the left and right wheels of the vehicle ride on the merchandise conveyor 192. After getting off the merchandise conveyor 192, the vehicle travels on the floor and stops at a predetermined position.
- the graph shown in FIG. 7C shows an example of vehicle state information measured by the manufacturing facility 3.
- the broken line in this graph indicates the vehicle speed
- the solid line indicates the water temperature.
- the vehicle speed when the engine is idle (0 km / h) is detected, and the maximum vehicle speed is detected when the vehicle travels on the floor after getting off the merchandise conveyor 192, and the predetermined position
- 812, 723, 706, and 704 rpm were detected as the rotational speeds of the respective engines.
- the vehicle simulator 1 performs communication with the vehicle communication device 10 by simulating the vehicle state of the vehicle that changes from moment to moment.
- the response 304 is generated by reflecting.
- the vehicle conditions 303 are a vehicle speed (0 km / h), a rotation speed (812 rpm), and a water temperature (20 ° C.) as shown in FIG. Therefore, as shown in FIG. 7A, the vehicle communication device 10 receives a negative response 305 indicating that the inspection condition is not satisfied.
- the engine idle check inspection process is to be carried out on the merchandise conveyor following the procedure implemented in the factory 1, it is necessary to raise the room temperature of the inspection line, for example. For this reason, if it is bound by the procedure performed in the manufacturing facility 1, the manufacturing cost of the manufacturing facility 3 will increase due to heating.
- the vehicle communication device 10 receives the response 335.
- the response 335 is an affirmative response indicating that the inspection condition is satisfied. This is because the vehicle condition 333 is the vehicle speed (0 km / h), the rotation speed (704 rpm), and the water temperature (50 ° C.) as shown in FIG.
- the inspection process of the engine emission regulations is not established on the merchandise conveyor 192 in the inspection line of the manufacturing facility 3 based on a predetermined establishment criterion.
- the vehicle is established at a predetermined position after getting off the merchandise conveyor 192.
- the vehicle can be produced at a low cost even in the cold region as long as the execution order and the execution location of the inspection process are changed regardless of the inspection order of the manufacturing facility 1. It can be understood by simulation in advance without an actual vehicle.
- the third operation example is an operation example in the case where the type of request received by the vehicle simulator 1 is a verification request for an inspection process related to engine emission regulations (misfire inspection). (Premise of the third operation example) Differences from the premise of the first operation example are as follows.
- the vehicle simulator 1 stores an operation period and a stop period of the engine on the line including the conveyor as vehicle state information detected by the manufacturing facilities 1 to N for a predetermined vehicle.
- MF inspection an inspection process of a misfire inspection
- MF inspection misfire inspection
- the length of the production line (assembly line + inspection line) of the factory 4 is equal to the length of the production line (assembly line + inspection line) of the factory 1.
- the assembly line was extended and the inspection line was shortened. That is, the length of the inspection line of the manufacturing facility 4 is shorter than the length of the inspection line of the manufacturing facility 1.
- the vehicle communication device 10 inquires at the request whether or not the inspection process of the MF inspection is established in the inspection line of the factory 4.
- the predetermined determination criterion is that a self-diagnosis that the air is removed from the fuel line is achieved.
- FIG. 9A shows a conceptual diagram in which the vehicle state necessary for the vehicle 20 when performing the MF inspection is made to correspond to the elapsed time in the inspection line.
- the vehicle state is in an idle state 401, a low speed state 402, an idle state 403, a low speed state 404, an engine stop state 405, a low speed state 406, and an idle state 407 as time passes on the inspection line.
- the low-speed state 408 and the idle state 409 change in this order.
- FIG. 9B shows a conceptual diagram in which the engine state necessary for the inspection process corresponds to the elapsed time in the inspection line when the MF inspection is performed on the inspection line of the manufacturing facility 1.
- the engine state of the vehicle 20 changes in the order of the engine start state 411, the engine stop state 412, and the engine start state 413 as time passes on the inspection line of the manufacturing facility 1.
- the time axis in FIG. 9 (b) corresponds to the time axis in FIG. 9 (a). That is, the period of the engine start state 411 shown in FIG. 9B coincides with the periods of the idle state 401, the low speed state 402, the idle state 403, and the low speed state 404 shown in FIG.
- the period of the engine stop state 412 shown in FIG. 9B coincides with the period of the engine stop state 405 shown in FIG. 9B corresponds to the periods of the low speed state 406, the idle state 407, the low speed state 408, and the idle state 409 shown in FIG. 9A.
- the MF inspection is started at the start of the period of the engine start state 411. Then, the MF inspection ends after a predetermined inspection time T1 has elapsed within the period of the engine start state 411.
- FIG. 9C shows a conceptual diagram in which the engine state necessary for the inspection process, which is assumed when performing the MF inspection in the inspection line of the manufacturing facility 4, is associated with the elapsed time in the inspection line.
- the engine state of the vehicle 20 is changed from the engine stop state 421 at the final stage of the assembly line of the manufacturing facility 4 to the inspection line of the manufacturing facility 4 as time passes on the manufacturing facility 4 line.
- the engine start state 422, the engine stop state 423, and the engine start state 424 change in this order.
- the time axis in FIG. 9 (c) corresponds to the time axis in FIG. 9 (a). That is, the period of the engine stop state 421 shown in FIG. 9C corresponds to the period of the idle state 401 shown in FIG. The period of the engine start state 422 shown in FIG. 9C corresponds to the periods of the low speed state 402, the idle state 403, and the low speed state 404 shown in FIG.
- the reason for planning in this way reflects that the assembly line of manufacturing plant 4 is longer than the assembly line of manufacturing plant 1, and that the inspection line of manufacturing plant 4 is correspondingly shorter than the inspection line of manufacturing plant 1. is there.
- 9C correspond to the period of the engine stop state 412 and the period of the engine start state 413 shown in FIG. .
- the MF inspection is started together with the start of the period of the engine start state 422. Then, it is planned to complete the MF inspection by ending the MF inspection after an assumed inspection time T2 having the same time width as the inspection time T1.
- the vehicle simulator 1 can simulate the establishment of the MF inspection using the vehicle information on the inspection line of the manufacturing facility 1 where the MF inspection has already been performed.
- FIGS. 10A and 10B are conceptual diagrams of a third operation example in the line of the manufacturing facility 1, where FIG. 10A is an operation of the vehicle communication device, FIG. 10B is an operation of the vehicle simulator, and FIG.
- the time change of the condition, (d) shows the vehicle on the line corresponding to the vehicle condition of the inspection line of the factory 1.
- VQ following the assembly process AF
- both the left and right wheels of the vehicle ride on the conveyor 193 shown in FIG.
- the vehicle moves on the floor, stops the engine at the position where the SWAT is installed, confirms the wheel alignment, and then runs on its own to finish the MF inspection. Proceed to the next inspection process.
- the graph shown in FIG. 10 (c) shows an example of vehicle information observed at the factory 1.
- the horizontal axis represents time
- the vertical axis represents binary evaluation corresponding to a predetermined criterion for establishment.
- the vertical axis of this graph shows the determination values in two steps of OK and NG for determining the air bleeding condition on the lower side, and ON (engine start) and OFF (for engine operation (ENG_RUN)) on the upper side.
- the two-stage judgment value is indicated as “engine stop”.
- the engine operation (ENG_RUN) is OFF, and the air bleeding condition determination is NG.
- the engine operation (ENG_RUN) is switched to ON and self-diagnosis starts.
- the vehicle simulator 1 performs communication with the vehicle communication device 10 by simulating the vehicle state of the vehicle that changes from moment to moment.
- the operation sequence between the vehicle communication device 10 and the vehicle simulator 1 is as follows.
- the vehicle communication device 10 makes a request 501 as shown in FIG. Suppose you send it.
- the response 504 is generated by reflecting.
- the vehicle condition 503 is the duration of the engine operation (ENG_RUN) as shown in FIG.
- the duration of the engine operation (ENG_RUN) is the time from t2 to t4, which is longer than the self-diagnosis time T3 for bleeding. Therefore, as shown in FIG. 10A, the vehicle communication device 10 receives an affirmative response 505 indicating that the inspection condition is satisfied.
- the vehicle simulator 1 simulates whether or not the inspection process of the MF inspection is established using the vehicle information on the inspection line of the manufacturing facility 4 will be described. It should be noted that the same operation sequence as that of the simulation on the inspection line of the manufacturing facility 1 described above is omitted as appropriate, and different points will be described.
- FIG. 11 is a conceptual diagram similar to FIG. 10 for the third operation example in the line of the factory 4, but the time shown in FIG. 11 and the time shown in FIG. 10 do not match.
- the conveyor 195 is shorter than the conveyor 193 shown in FIG.
- the sum of the length of the conveyor 195 shown in FIG. 11D and the length of the extended assembly line 194 is assumed to be equal to the length of the conveyor 193 shown in FIG.
- the graph shown in FIG. 11C shows an example of vehicle information observed at the factory 4.
- the engine operation ENG_RUN
- the air bleeding condition determination is NG.
- the vehicle gets on the conveyor 195 on the inspection line of the manufacturing facility 4.
- the engine operation ENG_RUN
- the vehicle gets off the conveyor 193 and moves on the floor during self-diagnosis.
- the vehicle simulator 1 performs communication with the vehicle communication device 10 by simulating the vehicle state of the vehicle that changes from moment to moment.
- the operation between the vehicle communication device 10 and the vehicle simulator 1 is shown in FIGS. 11 (a) and 11 (b).
- the operation sequence at this time is the same as that obtained by replacing the operation sequence described with reference numbers 500 in FIG. 10 with the reference numbers 510.
- the response 515 received by the vehicle communication device 10 shown in FIG. 11A is a negative response indicating that the inspection condition is not satisfied.
- the duration of the engine operation (ENG_RUN) which is the vehicle condition 513, is the time from t3 to t4, and the air bleeding self-diagnosis time T3 shown in FIG. This is because it is shorter and does not satisfy the determination criterion.
- the inspection process of the engine emission regulations is established in the inspection line of the manufacturing facility 1 on the basis of the predetermined determination criterion, but in the inspection line of the manufacturing facility 4. It can be verified that is not established. Therefore, the verification result of the inspection process obtained by simulation in advance without an actual vehicle can be reflected in a future development plan.
- the function of the communication control means 133 of the communication simulation system 100 will be described.
- the function of this communication control means 133 is communication of the selected vehicle condition using at least one type of virtual vehicle state information generated by reflecting an assumed change amount with respect to at least one type of vehicle state information.
- the processing is performed with the vehicle communication device 10.
- three specific examples of the virtual vehicle state information generated by reflecting the change amount will be taken up and sequentially described. In these specific examples, for example, since communication corresponding to a specific vehicle state of a certain vehicle selected by the communication simulation system 100 shown in FIG. 5 is simulated, the communication simulation system 100 is a vehicle that is one form thereof.
- the simulator 1 will be described.
- the first specific example is a specific example of virtual vehicle state information generated by reflecting the amount of change when the vehicle simulator 1 is assumed to simulate a model changed from a base model.
- a command for requesting predetermined vehicle state information in a predetermined inspection for a base model or a similar model of a vehicle is referred to as a command A.
- the base model is, for example, a model that has already been mass-produced.
- the similar model is a model derived from the base model, for example, and is a model that has undergone a minor change from the base model.
- the vehicle body and the skeleton are similar to the base model.
- a model A which is a base model
- a model B which is a similar model to the model A, generate a response to the command A by performing a predetermined inspection.
- a change amount of the vehicle state information assumed when the model C is inspected when the model C, which is a similar model based on the model A, is not performed will be described.
- a predetermined numerical value conversion rule is obtained in advance from a comparison between the vehicle state information acquired in the past for the model B, which is a similar model to the model A, and the vehicle state information acquired in the past for the model A.
- the numerical value conversion rule is, for example, a rule that the numerical value of the model A vehicle state information is multiplied by a predetermined coefficient for the model B to obtain the model B vehicle state information.
- the coefficient for model C is determined, it can be converted to model C vehicle status information using model A vehicle status information. Therefore, by multiplying the coefficient for the model C by the vehicle state information acquired in the past for the model A, the vehicle state information for the model C is obtained.
- the factor for model C can be determined empirically by referring to the predetermined factor for model B.
- the predetermined coefficient for model B can be determined empirically by a person. Note that the numerical simulation rule and the predetermined coefficient for the model B may be automatically obtained by the communication simulation system 100 comparing the stored model A data with the model B data. .
- the vehicle communication device 10 transmits a command A to the vehicle simulator 1 at a predetermined time (601), and the vehicle simulator 1 receives the command A.
- the process of reference numeral 602 is skipped, the water temperature (vehicle state information) detected in the past is extracted, and a response to the command A is generated ( 603).
- the vehicle simulator 1 that has received the command A simulates the model C
- the water temperature (vehicle state information) detected in the past for the model A that is the base of the model C The amount of change is reflected on the virtual vehicle state information that has been numerically converted (602).
- the vehicle simulator 1 generates a response to the command A using the virtual vehicle state information (603).
- FIG. 13A is a graph showing an example of a temporal change in the water temperature acquired in the past for the model A.
- the model A performs six inspection communications with the vehicle communication device 10 at times t1 to t6.
- the time change of the water temperature is linear and the time change rate is 20, for example.
- FIG. 13B is a graph showing an example of a temporal change in the water temperature acquired in the past for the model B, which is a similar model to the model A. Similarly, for model B, six inspection communications were performed. In the model B, it is assumed that the time change of the water temperature is linear and the time change rate is 25, for example.
- the time required for the water temperature of model B to reach 100 ° C. is reduced by 20% compared to the case of model A.
- the water temperature of the model B increases 25% compared with the case of the model A. That is, it can be seen from the past data that the water temperature of the model B is a value obtained by multiplying the water temperature of the model A by 1.25 during the period from the time t1 to the time t5.
- model C is part of the ECU specification, for example, the ECU specification related to the water temperature of a radiator or the like is changed from model A. Then, according to the ECU specification of model C, based on the comparison result between model A and model B, it is estimated that the water temperature of model C is linear in time change and the time change rate is, for example, 30. Shall be.
- FIG. 13C is a graph showing an example of a temporal change in water temperature estimated for the model C. As shown in FIG. 13 (c), the time required for the water temperature of model C to reach 100 ° C. is reduced by 33% compared to the case of model A. For example, during the period from time t1 to t4, the water temperature of model C It can be seen that it increases by 50% compared to the model A.
- a value obtained by multiplying the water temperature of the model A by 1.5 is generated as the water temperature of the model C (virtual vehicle state information).
- the model C can perform inspection communication with the vehicle communication device 10. That is, the coefficient of the numerical conversion rule from the model A to the model C for the water temperature in the period from the time t1 to the time t4 is 1.5.
- simulations such as vehicle inspections the vehicle status information acquired when the vehicle is driven on the line must be acquired for each model, and for all models It takes a lot of time.
- simulation such as inspection can be performed by reflecting the amount of change in the vehicle state information of the base model. it can.
- the model C does not have to be an existing actual vehicle, and may be a fictitious vehicle.
- a model C that is model-changed based on the model A may be developed in the future, and the amount of change assumed when this predetermined inspection is performed on the model C that does not yet exist may be reflected.
- the model change is not limited to a minor change and may be a full model change.
- the vehicle state information reflecting the change amount is not limited to the water temperature, and may be, for example, a vehicle speed.
- the numerical value conversion rule for use in the model C is not limited to multiplication, but may be a combination of four arithmetic operations or a non-linear operation using a function such as a trigonometric function.
- Second Specific Example reflects the amount of change when the vehicle simulator 1 assumes data obtained by changing data that was a fixed value in the travel pattern data acquired by the vehicle communication device 10. It is a specific example about the virtual vehicle state information to produce
- the traveling pattern data such as vehicle state information acquired when the actual vehicle travels on the line
- the data such as the water temperature and the vehicle speed are notable to change over time
- the acquired traveling pattern data includes Information such as a signal that does not change with time is also included.
- a plurality of in-vehicle electrical components are switched off.
- the vehicle-mounted electrical component is an air conditioner, for example, and a simulation is newly performed with the running pattern data when the switch of the air conditioner is ON.
- FIG. 14A is a sequence diagram showing a flow of communication processing between the vehicle simulator 1 and the vehicle communication device 10.
- the vehicle simulator 1 simulates an actual vehicle and stores travel pattern data of the actual vehicle.
- the switch signal of the air conditioner is an OFF signal at times t1, t2, and t3 as indicated by a virtual line 711 in FIG.
- time t1 is the time before the inspection
- time t2 is the time at which the inspection is started
- time t3 is the time at which the inspection ends.
- An instruction for performing this inspection is referred to as command B.
- the user operates the vehicle simulator 1 at time t1 before the inspection is performed. That is, the switch operation reflecting the amount of change in the newly executed simulation is performed.
- the switch signal of the air conditioner is switched from the OFF signal to the ON signal at time t1, as indicated by a thick solid line 712 in FIG.
- the vehicle communication device 10 transmits a command B to the vehicle simulator 1 (702).
- the vehicle simulator 1 inspects the command B using virtual vehicle state information that the switch signal of the air conditioner is an ON signal.
- the vehicle simulator 1 generates a response using the virtual vehicle state information (704).
- This response includes a record that an inspection was performed when the switch signal of the air conditioner was an ON signal.
- the vehicle simulator 1 may switch the switch signal of an air conditioner to an OFF signal.
- the vehicle By performing inspection communication between the communication device 10 and the vehicle simulator 1 on which the user performs a switch operation, the inspection communication between the vehicle communication device 10 and the actual vehicle can be simulated. Therefore, it is possible to examine the feasibility of a process when a test that requires a switch operation of the actual vehicle is added or a process that requires a switch operation of the actual vehicle is moved by simulation.
- on-vehicle electrical components that involve switch operation are not limited to air conditioners. Further, the operation by the user may be switched between communication enablement and communication disablement regarding the in-vehicle electrical component, in addition to switching ON / OFF for the original function of the in-vehicle electrical component such as an air conditioner.
- the vehicle communication device 10 acquires travel pattern data such as vehicle state information when an actual vehicle travels on the line. In the past data recording process, the vehicle communication device 10 transmits various commands to the actual vehicle. Among these, a specific command becomes a new command simply by changing a numerical value, and can be newly used.
- the rotation speed NE the engine rotation speed set to 0 rpm.
- the rotation speed NE the engine rotation speed set to 0 rpm.
- the rotation speed NE is changed to 3000 rpm at the same timing in this inspection process.
- FIG. 15A is a sequence diagram showing a flow of communication processing between the vehicle simulator 1 and the vehicle communication device 10.
- the vehicle simulator 1 simulates an actual vehicle and stores travel pattern data of the actual vehicle.
- the rotational speed NE is 0 rpm at times t1 and t2, as indicated by a virtual line 811 in FIG.
- time t1 is the time when the vehicle communication device 10 requests to drive the rotational speed NE to 3000 rpm
- time t2 is the time when the current rotational speed NE is requested.
- the command C is a command for requesting the rotational speed NE to be driven to 3000 rpm.
- Command D is a command for requesting the current rotational speed NE.
- the vehicle simulator 1 At time t2, the vehicle simulator 1 generates a response to the command C (803). This response notifies that the command C has been received. Note that the virtual vehicle state information may be generated after notifying this response.
- the vehicle communication device 10 transmits a command D to the vehicle simulator 1 (804).
- the vehicle communication device 10 confirms the response from the vehicle simulator 1 and determines whether or not the rotational speed NE is 3000 or more (806). When the rotational speed NE is 3000 or more (NE ⁇ 3000), it is determined that the inspection of the actual vehicle simulated in this simulation has passed (807).
- the method of changing the rotational speed NE is not limited to the above embodiment.
- the following modifications 1 to 3 may be performed.
- the rotational speed NE is changed to 3000 rpm at the same timing.
- (Modification 2) A command for requesting the rotational speed NE to be driven at 3000 rpm is added at another timing.
- (Modification 3) At another timing, a command for requesting to drive the rotational speed NE to 2000 rpm is added again.
- the change amount may be subtracted.
- the specific command for simply changing the numerical value is not limited to the engine speed.
- the communication simulation system 100 reproduces the vehicle state information in the inspection process at the inspection place specified by the selected vehicle condition. Therefore, the communication simulation system 100 can simulate a communication state of communication performed between the electrical systems 21 and 22 mounted on the vehicle 20 and the vehicle communication device 10 without an actual vehicle.
- the vehicle communication device 10 according to the embodiment of the present invention communicates with the communication simulation system 100 via the communication simulation system interface 12 and the communication simulation device 14, thereby allowing the vehicle communication device 10 to communicate via the vehicle interface 11. Communication with the vehicle 20 can be simulated.
- the present invention is not limited to the above-described embodiments.
- the mode including the processing editing unit 134 is used.
- the processing editing unit 134 may not be provided.
- the present invention is not limited to this, and the communication simulation system 100 may be configured by a portable information terminal, a desktop computer, a workstation, a cloud server, or the like.
- the vehicle communication is described as inspection communication.
- the present invention is not limited to this, and the vehicle communication may be communication for learning and writing. Similar effects can be achieved.
- the form in which the cable of the vehicle interface 11 is connected to the vehicle communication apparatus 10 is illustrated, the form in which the cable of the communication simulation system interface 12 is connected to the vehicle communication apparatus 10 is illustrated. It is good also as a form mutually connected.
- the base end of the cable of the communication simulation system interface 12 may be connected to the tip of the cable of the vehicle interface 11.
- an OBD2 standard connector female
- the OBD2 standard connector male
- the OBD2 standard connector male
- the front end of the cable of the communication simulation system interface 12 is connected to the communication simulation device with the vehicle interface 11 and the communication simulation system interface 12 connected. 14 to the vehicle simulator 1.
- an OBD2 standard connector at the tip of the cable of the vehicle interface 11 is connected to the vehicle 20 with the communication simulation system interface 12 removed.
- the front end side of the cable of the communication simulation system interface 12 is branched into two.
- an RJ45 connector may be provided at one end
- an OBD2 standard connector male
- Vehicle simulator 10 (10a, 10b) Vehicle communication apparatus 11 Vehicle interface 12 Communication simulation system interface 14 Communication simulation device 18 Information processing terminal device 181 Communication definition file 20 Vehicle 21, 22 Electrical system 23 Sensor group 24 Communication interface 25 Operation Part 31, 32, 33, 34 ECU 41 Microprocessor 42 Input / output unit 43 Communication module 44 Communication definition file 51, 52, 53 Sensor 100 Communication simulation system 110 Communication interface (communication content input means) 111 I / O interface 120 Storage section (storage means) 121 vehicle condition database 122,123 communication definition file 130 processing unit (processing means) 131 Communication Recording Unit 132 Vehicle State Information Obtaining Unit 133 Communication Control Unit 134 Processing Editing Unit 141 Request Accepting Unit 142 Determination Unit 143 Response Unit
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Abstract
Description
そこで、実車を用いずに、シミュレーションにより工程を検証することが考えられる。しかしながら、特許文献1に記載された車載電装品試験システムは、車両全体を模擬したシミュレーションにより車載電装品の動作の試験を行うものであって、ラインにおける工程の成立性を検証することはできない。
本発明の実施形態に係る車両通信装置10は、図1(a)および図1(b)に示すように、内部のコンピュータによる車両診断のためのキー操作部15およびディスプレイ16と、把持部17とを備え、把持部17により吊り下げ可能に構成されている。
また、レスポンスとは、例えば、車両情報(車両識別情報や後記する車両状態情報等)の返答、各種情報の書込み完了/未完了の返答、セキュリティ解除/未解除の返答、自己診断の実行可/実行不可の返答、学習開始の実行可/実行不可の返答、検査工程の成立/不成立の返答等を含む。なお、車両のECUからのレスポンスは、後記する車両状態情報等によって可変する。
車両通信装置10は、車両20と有線で通信を実際に行っている最中に、情報処理端末装置18から、無線通信により、上記有線通信と関連した設備情報を取得する。
検査対象の自動車の車両内部の電子制御システムの構成例を図2に示す。この例では、車両20は、図2に示すように、電装システム21と、電装システム22と、センサ群23と、通信インタフェース24と、操作部25とを主に備えている。
ECU31が例えばエンジンの電子制御システムである場合、例えば排出ガス基準(Emission Standard)の法規検査に対応した通信ごとに、ECU31は通信定義ファイル44をそれぞれ保有する。なお、図2では、複数の通信定義ファイルを一括して表した。また、図2では、ECU31の内部の構成要素のみ図示したが、電装システム21,22の備える各ECU32~34は、同様な構成要素を内部に備える。
通信模擬システム100による通信模擬方法の手順について図3を参照(適宜、図1および図2参照)して説明する。前提として、所定の検査場所で行った検査工程における車両20と車両通信装置10との通信内容を通信ログデータ2として記録しておく。また、車両状態情報と、検査工程と検査場所と車両とを対応付けた情報のことを車両条件と呼ぶ。また、このように他の情報と対応付けて一意に特定できるときの車両状態情報のことも単に車両条件と呼ぶ。つまり、所定車種の車両について、所定検査場所にて、所定検査工程の際に、車両側で検知された車速度、水温、エンジン状態(IG_ON/IG_OFF)等の車両状態情報は、1つの車両条件である。
一例として、車両条件データベース121から、製作所2の車両1に関する車両条件が選択されたときに再現されたラインの車両条件のグラフ3を図示する。
ここでは、通信模擬システム100の運用例について図4を参照(適宜、図1および図3参照)して説明する。図3に示す車両条件データベース121の前提として、図4の図中左側に検査場所(製作所1、製作所2、…、製作所N)の概念図を模式的に示す。各製作所では、生産ラインとして、車体を組み立てて完成車に仕上げる一連の組立工程の全体のためのライン(組立ライン)と、完成車の出荷前の法規検査等を行う一連の検査工程の全体のためのライン(検査ライン)とを備えている。
製作所で行う一連の検査工程の全体を指すときに検査工程VQと表記し、この検査工程VQに含まれている細分化された数多くの検査工程については符号を省略する。
また、検査工程VQには、商品性を検査するためのベルトコンベア(以下、単に商品性コンベアまたはコンベアという)上の車両に対して行う検査工程と、車両が商品性コンベアを降りて停車または低速走行中に行う検査工程とが含まれている。
ここでは、本発明の実施形態に係る通信模擬システムの構成例について図5を参照(適宜図1から図4参照)して説明する。車両通信装置10に関して、図5において、通信ログデータ2(図3参照)を収集する時点の車両通信装置10aと、車両シミュレータ1(図3参照)に対して通信を行う時点の車両通信装置10bとの符号を区別し、それぞれの代表として1台ずつ図示した。つまり、車両通信装置10aと車両通信装置10bとは、通信模擬システム100に関わるタイミングが異なっている。
リクエスト受付手段141は、車両通信装置10bから、車両の検査工程における要求信号(リクエスト)を、通信模擬システム用インタフェース12(図1(b)参照)、通信模擬装置14および通信インタフェース110を介して受け付けるものである。リクエストには、図1(b)を参照して説明したように、例えば、車両識別情報の読出し要求、車両状態情報の読出し要求、各種情報の書込み要求、セキュリティ解除要求、強制駆動要求、自己診断要求、学習開始要求、検査工程検証要求等を含む。ここで受け付けたリクエストは、判定手段142に出力される。
判定手段142は、受け付けたリクエストの種別が、自己診断要求、学習開始要求等の場合には、自己診断や学習開始等が実行できるか否かを、予め定められた実行判定基準にしたがって判定し、実行可/実行不可の判定結果を応答手段143に出力する。
判定手段142は、受け付けたリクエストの種別が、検査工程検証要求の場合には、検査工程が成立するか否かを、予め定められた成立判定基準にしたがって判定し、成立/不成立の判定結果を応答手段143に出力する。
応答手段143は、受け付けたリクエストの種別が、自己診断要求や学習開始要求等の場合には、自己診断や学習開始等についての実行可/実行不可の判定結果も同様に送信する。応答手段143は、受け付けたリクエストの種別が、検査工程検証要求の場合には、検査工程についての成立/不成立の判定結果も同様に送信する。
ここでは、通信模擬システム100の動作について3つの具体例を取り上げて順次説明する。これら具体例においては、例えば図5に示す通信模擬システム100にて選択されたある車両の特定の車両状態に相当する通信を模擬するので、通信模擬システム100を、その一形態である車両シミュレータ1として説明する。
第1動作例は、車両シミュレータ1が受け付けたリクエストの種別が、ステアリング舵角センサの学習に係る検査工程についての検証要求の場合の動作例である。
(第1動作例の前提)
車両シミュレータ1は、所定の車両について、第1~第Nの検査場所である、図4に示す製作所1~製作所Nにて検知された速度情報(車両状態情報)として、コンベアを含むライン上の車速度とエンジンの回転速度とをそれぞれ記憶している。
製作所1にて、この車両について、車両の左右の車輪がいずれも商品性コンベアに乗った状態でステアリング舵角センサの検査工程を実施しているが、製作所2では、この検査工程を実施していない。今後、製作所2でもステアリング舵角センサの検査工程を実施する計画がある場合を想定する。
車両通信装置10は、製作所2の検査ラインで、ステアリング舵角センサの学習の検査工程が成立するか否かを、検証要求(単にリクエストという)にて車両シミュレータ1に問い合わせる。このリクエストは定期的に繰り返し送信される。
第1動作例において、予め定められた成立判定基準は、車速度が0であることである。これは、車両が停止していないと、ステアリング舵角センサの学習を開始できないからである。
時刻t=t4のときの動作シーケンスは、時刻t=t1にて200番台の符号で説明した動作シーケンスを230番台の符号に置き換えたものと同様である。この場合、時刻t=t1のときと同様に、車両通信装置10は否定の応答235を受信する。
第2動作例は、車両シミュレータ1が受け付けたリクエストの種別が、エンジンのエミッション法規(エンジンのアイドルチェック)に係る検査工程についての検証要求の場合の動作例である。
(第2動作例の前提)
前記第1動作例の前提と異なる点は以下の通りである。
車両シミュレータ1は、所定の車両について製作所1~製作所Nにて検知された車両状態情報として、コンベアを含むライン上の車速度およびエンジンの回転速度に加えてエンジンの水温をそれぞれ記憶している。
製作所1にて、この車両について商品性コンベア上でエンジンのアイドルチェックの検査工程を実施しているが、製作所3では、この検査工程を実施していない。今後、製作所3にてエンジンのアイドルチェックの検査工程を実施する計画がある場合を想定する。
製作所3の検査ラインの長さと、製作所1の検査ラインの長さとは等しい。製作所3が製作所1に比べて気温が格段に低い寒冷地に立地している。
車両通信装置10は、製作所3の検査ラインでは、エンジンのアイドルチェックの検査工程が成立するか否かをリクエストにて問い合わせる。
予め定められた成立判定基準は、エンジンのアイドル時の車速度が0であることと、水温が50℃以上であることの両方を満たすことである。これらは、検査開始可能な条件だからである。
時刻t=t3のときの動作シーケンスは、時刻t=t1にて300番台の符号で説明した動作シーケンスを320番台の符号に置き換えたものと同様である。この場合、時刻t=t1のときと同様に、車両通信装置10は否定の応答325を受信する。
第3動作例は、車両シミュレータ1が受け付けたリクエストの種別が、エンジンのエミッション法規(ミスファイア検査)に係る検査工程についての検証要求の場合の動作例である。
(第3動作例の前提)
前記第1動作例の前提と異なる点は以下の通りである。
車両シミュレータ1は、所定の車両について製作所1~製作所Nにて検知された車両状態情報として、コンベアを含むライン上のエンジンの動作期間および停止期間をそれぞれ記憶している。
製作所1にて、この車両についてエンジンの失火に係るミスファイア検査(以下、MF検査という)の検査工程を実施しているが、製作所4では、この検査工程を実施していない。今後、製作所4にてMF検査の検査工程を実施する計画がある場合を想定する。
製作所4の生産ライン(組立ライン+検査ライン)の長さは、製作所1の生産ライン(組立ライン+検査ライン)の長さと等しい。ただし、製作所4の設備では、製作所1と比べると、組立ラインを延長し、検査ラインを短縮した。つまり、製作所4の検査ラインの長さは、製作所1の検査ラインの長さよりも短い。
車両通信装置10は、製作所4の検査ラインにおいて、MF検査の検査工程が成立するか否かをリクエストにて問い合わせる。
予め定められた成立判定基準は、フューエルラインからエア抜きが成されているとの自己診断が達成されることである。ここで、エンジン始動後に予め定められた所定時間が経過したときにフューエルラインからのエア抜きが成されたとみなし、自己診断が達成されて完了することとする。ただし、エンジン停止時に、それまでに経過した自己診断時間をリセットする。つまり、エンジン始動後に予め定められた所定時間が経過する前に、エンジンが停止した場合、エンジンが再始動したとしても、エンジン停止前に自己診断のために経過した時間は無効となり、自己診断を初めからやり直す必要がある。
製作所1において、組立工程AFに続く検査工程VQのラインでは、車両の左右の車輪はいずれも図10(d)に示すコンベア193に乗る。車両はコンベア193を降りた後、床の上を移動して、SWATが設置された位置にてエンジンを停止してホイールアライメントを確認した後、自走してMF検査を終了し、検査ラインの次の検査工程に進む。
製作所4において、組立工程AFに続く検査工程VQのラインでは、車両の左右の車輪はいずれも図11(d)に示すコンベア195に乗る。ただし、コンベア195は、図10(d)に示すコンベア193よりも短い。ここでは、図11(d)に示すコンベア195の長さと、延長された組立ライン194の長さとの和が、図10(d)に示すコンベア193の長さと等しいものとした。
具体的には、図11(c)および図11(d)に示すように、製作所4では、車両は、時刻t=t0に、延長された組立ライン上にある。このとき、エンジンの動作(ENG_RUN)はOFFであり、かつ、エア抜き条件判定はNGである。そして、時刻t=t1にて、製作所4の検査ラインでは、車両がコンベア195に乗る。このとき、エンジンが始動すると、エンジンの動作(ENG_RUN)はONに切り替わり、自己診断が開始する。エンジン始動後に車両は自己診断を行っている最中に、コンベア193を降り、床の上を移動する。そして、時刻t=t2にて、SWATが設置された位置にてエンジンを停止すると、エンジンの動作(ENG_RUN)はOFFに切り替わる。このときエア抜き条件判定はNGのままである。t1~t2の時間(自己診断時間T4)は、図10(c)に示すエア抜き自己診断時間T3よりも短い。つまり、エンジンが停止した時刻t=t2の時点では、自己診断が達成されずに完了する。そして、それまでに経過した自己診断時間はリセットされる。車両がホイールアライメントを確認し、時刻t=t3にて、エンジンが始動すると、エンジンの動作(ENG_RUN)はONに切り替わり、自己診断を初めからやり直す。
ここでは、通信模擬システム100の通信制御手段133の機能について説明する。この通信制御手段133の機能は、少なくとも1種類の車両状態情報に対して想定される変化量を反映して生成される少なくとも1種類の仮想車両状態情報を用いて、選択された車両条件の通信処理を車両通信装置10との間で行うことを特徴とする。
以下、変化量を反映して生成される仮想車両状態情報についての3つの具体例を取り上げて順次説明する。なお、これら具体例においては、例えば図5に示す通信模擬システム100にて選択されたある車両の特定の車両状態に相当する通信を模擬するので、通信模擬システム100を、その一形態である車両シミュレータ1として説明する。
第1具体例は、車両シミュレータ1が、ベース機種から変化した機種を模擬することを想定したときのその変化量を反映して生成する仮想車両状態情報についての具体例である。
ここで、ベース機種は例えば既に量産している機種である。類似機種は、例えばベース機種から派生した機種であり、ベース機種からマイナーチェンジした機種である。この類似機種は、例えば車体や骨格がベース機種に類似している。
例えばベース機種である機種Aと、機種Aの類似機種である機種Bでは、所定の検査を行いコマンドAに対するレスポンスを生成していたものとする。そして、機種Aをベースとした類似機種である機種Cではこの検査を行っていなかったときに、機種Cについて検査を行った場合に想定される、車両状態情報の変化量について説明する。
図13(a)は、機種Aについて過去に取得した水温の時間変化の一例を示すグラフである。ここでは、所定の検査工程にて機種Aが車両通信装置10との間で時刻t1~t6のように6回の検査通信を行った。また、機種Aでは、水温の時間変化が直線的であって、時間変化率が例えば20であったものとする。
第2具体例は、車両シミュレータ1が、車両通信装置10で取得された走行パターンデータにおいては固定値であったデータを変化させたデータを想定したときの変化量を反映して生成する仮想車両状態情報についての具体例である。
以下では、車載電装品が例えばエアコンディショナであり、このエアコンディショナのスイッチがONのときの走行パターンデータでシミュレーションを新たに実施する場合について図14(a)および図14(b)を参照して説明する。
第3具体例は、車両シミュレータ1が、車両通信装置10から特定のコマンドを受信したときに、その特定のコマンドに含まれる変化量を反映し、車両通信装置10で取得された走行パターンデータの一部を変化させて生成する仮想車両状態情報についての具体例である。
まず、時刻t1にて、図15(a)に示すように、車両通信装置10は、車両シミュレータ1にコマンドCを送信する(801)。車両シミュレータ1は、コマンドCを受信すると、車両状態情報として検出された回転速度(NE=0)に変化量(3000)を加算することで、仮想車両状態情報としての回転速度(NE=3000)を生成する(802)。このとき、回転速度は、図15(b)に太い実線812で示すように時刻t1において0rpmから3000rpmに切り替わる。
例えば回転速度NEを2000rpmにして検査を行っていた場合、次の変形例1~3のようにしてもよい。
(変形例1)同じタイミングで回転速度NEを3000rpmに変更する。
(変形例2)別のタイミングで回転速度NEを3000rpmに駆動要求するコマンドを追加する。
(変形例3)別のタイミングで、再び回転速度NEを2000rpmに駆動要求するコマンドを追加する。
また、本発明の実施形態に係る車両通信装置10は、通信模擬システム用インタフェース12、通信模擬装置14を介して通信模擬システム100との間で通信を行うことで、車両用インタフェース11を介した車両20との通信を模擬することができる。
また、前記実施形態では、車両通信が検査通信であるものとして説明したが、本発明は、これに限らず、車両通信が、学習、書き込みのための通信であってもよく、この場合にも同様の効果を奏することができる。
10(10a,10b) 車両通信装置
11 車両用インタフェース
12 通信模擬システム用インタフェース
14 通信模擬装置
18 情報処理端末装置
181 通信定義ファイル
20 車両
21,22 電装システム
23 センサ群
24 通信インタフェース
25 操作部
31,32,33,34 ECU
41 マイクロプロセッサ
42 入出力部
43 通信モジュール
44 通信定義ファイル
51,52,53 センサ
100 通信模擬システム
110 通信インタフェース(通信内容入力手段)
111 入出力インタフェース
120 記憶部(記憶手段)
121 車両条件データベース
122,123 通信定義ファイル
130 処理部(処理手段)
131 通信記録手段
132 車両状態情報取得手段
133 通信制御手段
134 加工編集手段
141 リクエスト受付手段
142 判定手段
143 応答手段
Claims (21)
- 車両に搭載される複数の車両電装システムに対して車両外部より接続されて前記それぞれの車両電装システムの作動状態を検証する車両通信装置と前記車両電装システムとの間において、所定の通信定義ファイルで規定された通信処理と、車両側で検知された時刻別の車両状態を示す少なくとも1種類の車両状態情報とにしたがって行われる通信を模擬する通信模擬システムであって、
所定の場所で行う工程における前記車両電装システムと前記車両通信装置との通信内容として前記車両状態情報を入力する通信内容入力手段と、
前記入力された車両状態情報を、工程、場所および車両と対応付けて車両条件として車両条件データベースに記録する通信記録手段と、
前記それぞれの車両電装システムに含まれる複数の電子制御ユニットが所定の工程にて実行する通信処理を規定したそれぞれの通信定義ファイルと同じ通信定義ファイルをそれぞれ記憶する記憶手段と、
選択された車両条件に応じて、前記車両条件データベースから前記車両状態情報を取得する車両状態情報取得手段と、
選択された工程に応じて前記記憶手段から前記通信定義ファイルを取得し、前記取得された前記通信定義ファイルに規定された通信処理と、前記選択された車両条件に応じて前記車両条件データベースから取得された車両状態情報とにしたがって、前記選択された工程における前記選択された車両条件の通信処理を前記車両通信装置との間で行う通信制御手段と、
を備えることを特徴とする通信模擬システム。 - 前記所定の場所で行う工程における通信は、
前記車両通信装置が前記車両電装システムの作動を検証するために行う検査通信と、前記車両通信装置が学習を行うための学習通信と、前記車両通信装置がデータを書き込むための書き込み通信と、のうちのいずれかの通信である
ことを特徴とする請求項1に記載の通信模擬システム。 - 車両に搭載される複数の車両電装システムに対して車両外部より接続されて前記それぞれの車両電装システムの作動状態を検証する車両通信装置であって所定の検査場所での必要情報を管理する設備に付帯する情報処理端末装置と無線で通信接続される前記車両通信装置と前記車両電装システムとの間、および前記車両通信装置と前記情報処理端末装置との間、において所定の通信定義ファイルで規定された通信処理と、車両側で検知された時刻別の車両状態を示す少なくとも1種類の車両状態情報と、にしたがって行われる検査通信を模擬する通信模擬システムであって、
所定の検査場所で行う検査工程における前記車両電装システムおよび前記情報処理端末装置と前記車両通信装置との通信内容として前記車両状態情報を入力する通信内容入力手段と、
前記入力された車両状態情報を、検査工程と検査場所と車両と対応付けて車両条件として車両条件データベースに記録する通信記録手段と、
前記それぞれの車両電装システムに含まれる複数の電子制御ユニットおよび前記情報処理端末装置が所定の検査工程にて実行する通信処理を規定したそれぞれの通信定義ファイルと同じ通信定義ファイルをそれぞれ記憶する記憶手段と、
選択された車両条件に応じて、前記車両条件データベースから前記車両状態情報を取得する車両状態情報取得手段と、
選択された検査工程に応じて前記記憶手段から前記通信定義ファイルを取得し、前記取得された前記通信定義ファイルに規定された通信処理と、前記選択された車両条件に応じて前記車両条件データベースから取得された車両状態情報とにしたがって、前記選択された検査工程における前記選択された車両条件において前記電子制御ユニットが実行する有線通信処理と、当該検査工程において前記情報処理端末装置が実行する無線通信処理とを並行して前記車両通信装置との間で行う通信制御手段と、
を備えることを特徴とする通信模擬システム。 - 前記車両状態情報は、場所毎の設備と環境とのうち少なくとも1つにより影響を受ける車両状態の情報であることを特徴とする請求項1に記載の通信模擬システム。
- 前記車両状態情報は、場所毎の設備と環境とのうち少なくとも1つにより影響を受ける車両状態の情報であることを特徴とする請求項2に記載の通信模擬システム。
- 前記車両状態情報は、場所毎の設備と環境とのうち少なくとも1つにより影響を受ける車両状態の情報であることを特徴とする請求項3に記載の通信模擬システム。
- 前記通信制御手段は、
前記少なくとも1種類の車両状態情報に対して想定される変化量を反映して生成される少なくとも1種類の仮想車両状態情報を用いて、前記選択された車両条件の通信処理を前記車両通信装置との間で行うことを特徴とする請求項1から請求項6のいずれか一項に記載の通信模擬システム。 - 前記仮想車両状態情報は、一の機種の車両で検知された通信内容に含まれる前記車両状態情報と、前記一の機種に類似した類似機種の車両で検知された通信内容に含まれる前記車両状態情報との比較から予め求められた所定の数値変換規則を用いて、前記一の機種の車両で検知された通信内容に含まれる前記車両状態情報を数値変換することで生成され、
前記通信制御手段は、前記仮想車両状態情報を用いることで、前記一の機種から変化した変化量を反映した他の機種の車両が前記車両通信装置からの要求に応答する通信内容を模擬することを特徴とする請求項7に記載の通信模擬システム。 - 前記仮想車両状態情報は、前記車両で検知された通信内容に含まれる前記車両状態情報に関連付けて生成された仮想的な通信情報であり、
前記通信制御手段は、前記仮想車両状態情報を用いることで、前記車両状態情報を含む通信内容が検知された車両が前記車両通信装置からの要求に応答する通信内容を模擬することを特徴とする請求項7に記載の通信模擬システム。 - 前記仮想車両状態情報は、前記車両で検知された通信内容に含まれる前記車両状態情報に対して、前記車両通信装置からの予め定められた特定のコマンドで要求される数値を加算または減算する数値変換により生成され、
前記通信制御手段は、前記仮想車両状態情報を用いることで、前記車両状態情報を含む通信内容が検知された車両が前記車両通信装置からの前記特定のコマンドに応答する通信内容を模擬することを特徴とする請求項7に記載の通信模擬システム。 - 車両に搭載される複数の車両電装システムに対して車両外部より接続されて前記それぞれの車両電装システムの作動状態を検証する車両通信装置と前記車両電装システムとの間において、所定の通信定義ファイルで規定された通信処理と、車両側で検知された時刻別の車両状態を示す少なくとも1種類の車両状態情報とにしたがって行われる通信を模擬する通信模擬システムによる通信模擬方法であって、
前記通信模擬システムは、前記それぞれの車両電装システムに含まれる複数の電子制御ユニットが所定の工程にて実行する通信処理を規定したそれぞれの通信定義ファイルと同じ通信定義ファイルをそれぞれ記憶する記憶手段と、処理手段とを備え、
前記処理手段は、
所定の場所で行う工程における前記車両電装システムと前記車両通信装置との通信内容として前記車両状態情報を入力する通信内容入力ステップと、
前記入力された車両状態情報を、工程、場所および車両と対応付けて車両条件として車両条件データベースに記録する通信記録ステップと、
選択された車両条件に応じて、前記車両条件データベースから前記車両状態情報を取得する車両状態情報取得ステップと、
選択された工程に応じて前記記憶手段から前記通信定義ファイルを取得し、前記取得された前記通信定義ファイルに規定された通信処理と、前記選択された車両条件に応じて前記車両条件データベースから取得された車両状態情報とにしたがって、前記選択された工程における前記選択された車両条件の通信処理を前記車両通信装置との間で行う通信制御ステップと、
を実行することを特徴とする通信模擬方法。 - 前記所定の場所で行う工程における通信は、
前記車両通信装置が前記車両電装システムの作動を検証するために行う検査通信と、前記車両通信装置が学習を行うための学習通信と、前記車両通信装置がデータを書き込むための書き込み通信と、のうちのいずれかの通信である
ことを特徴とする請求項11に記載の通信模擬方法。 - 車両に搭載される複数の車両電装システムに対して車両外部より接続されて前記それぞれの車両電装システムの作動状態を検証する車両通信装置であって所定の検査場所での必要情報を管理する設備に付帯する情報処理端末装置と無線で通信接続される前記車両通信装置と前記車両電装システムとの間、および前記車両通信装置と前記情報処理端末装置との間、において所定の通信定義ファイルで規定された通信処理と、車両側で検知された時刻別の車両状態を示す少なくとも1種類の車両状態情報と、にしたがって行われる検査通信を模擬する通信模擬システムによる通信模擬方法であって、
前記通信模擬システムは、前記それぞれの車両電装システムに含まれる複数の電子制御ユニットおよび前記情報処理端末装置が所定の検査工程にて実行する通信処理を規定したそれぞれの通信定義ファイルと同じ通信定義ファイルをそれぞれ記憶する記憶手段と、処理手段とを備え、
前記処理手段は、
所定の検査場所で行う検査工程における前記車両電装システムおよび前記情報処理端末装置と前記車両通信装置との通信内容として前記車両状態情報を入力する通信内容入力ステップと、
前記入力された車両状態情報を、検査工程と検査場所と車両と対応付けて車両条件として車両条件データベースに記録する通信記録ステップと、
選択された車両条件に応じて、前記車両条件データベースから前記車両状態情報を取得する車両状態情報取得ステップと、
選択された検査工程に応じて前記記憶手段から前記通信定義ファイルを取得し、前記取得された前記通信定義ファイルに規定された通信処理と、前記選択された車両条件に応じて前記車両条件データベースから取得された車両状態情報とにしたがって、前記選択された検査工程における前記選択された車両条件において前記電子制御ユニットが実行する有線通信処理と、当該検査工程において前記情報処理端末装置が実行する無線通信処理とを並行して前記車両通信装置との間で行う通信制御ステップと、
を実行することを特徴とする検査通信模擬方法。 - 前記車両状態情報は、場所毎の設備と環境とのうち少なくとも1つにより影響を受ける車両状態の情報であることを特徴とする請求項11に記載の通信模擬方法。
- 前記車両状態情報は、場所毎の設備と環境とのうち少なくとも1つにより影響を受ける車両状態の情報であることを特徴とする請求項12に記載の通信模擬方法。
- 前記車両状態情報は、場所毎の設備と環境とのうち少なくとも1つにより影響を受ける車両状態の情報であることを特徴とする請求項13に記載の通信模擬方法。
- 前記処理手段は、前記通信制御ステップにて、
前記少なくとも1種類の車両状態情報に対して想定される変化量を反映して生成される少なくとも1種類の仮想車両状態情報を用いて、前記選択された車両条件の通信処理を前記車両通信装置との間で行うことを特徴とする請求項11から請求項16のいずれか一項に記載の通信模擬方法。 - 前記仮想車両状態情報は、一の機種の車両で検知された通信内容に含まれる前記車両状態情報と、前記一の機種に類似した類似機種の車両で検知された通信内容に含まれる前記車両状態情報との比較から予め求められた所定の数値変換規則を用いて、前記一の機種の車両で検知された通信内容に含まれる前記車両状態情報を数値変換することで生成され、
前記処理手段は、前記通信制御ステップにて、前記仮想車両状態情報を用いることで、前記一の機種から変化した変化量を反映した他の機種の車両が前記車両通信装置からの要求に応答する通信内容を模擬することを特徴とする請求項17に記載の通信模擬方法。 - 前記仮想車両状態情報は、前記車両で検知された通信内容に含まれる前記車両状態情報に関連付けて生成された仮想的な通信情報であり、
前記処理手段は、前記通信制御ステップにて、前記仮想車両状態情報を用いることで、前記車両状態情報を含む通信内容が検知された車両が前記車両通信装置からの要求に応答する通信内容を模擬することを特徴とする請求項17に記載の通信模擬方法。 - 前記仮想車両状態情報は、前記車両で検知された通信内容に含まれる前記車両状態情報に対して、前記車両通信装置からの予め定められた特定のコマンドで要求される数値を加算または減算する数値変換により生成され、
前記処理手段は、前記通信制御ステップにて、前記仮想車両状態情報を用いることで、前記車両状態情報を含む通信内容が検知された車両が前記車両通信装置からの前記特定のコマンドに応答する通信内容を模擬することを特徴とする請求項17に記載の通信模擬方法。 - 車両に搭載される複数の車両電装システムに対して車両外部より車両用インタフェースを介して有線で通信接続されると共に、検査場所での必要情報を管理する設備に付帯する情報処理端末装置と無線で通信接続される車両通信装置であって、
請求項1から請求項10のいずれか一項に記載の通信模擬システムと通信可能に接続される通信模擬システム用インタフェースを備え、
選択された工程が所定の場所における前記車両状態情報に基づいて成立するか否かの問い合わせを、前記通信模擬システム用インタフェースを介して前記通信模擬システムに送信し、
前記問い合わせに対する応答を、前記通信模擬システム用インタフェースを介して前記通信模擬システムから受信することを特徴とする車両通信装置。
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