JP2004058777A - Remote failure diagnosis system of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase items free to remotely diagnose in a remote failure diagnosis system to transmit vehicle information to an information center by collecting it from an on-vehicle terminal and to transmit a diagnosis result to the on-vehicle terminal as an automobile repairman carries out failure diagnosis by forming a material of the failure diagnosis on the information center. <P>SOLUTION: The on-vehicle terminal is characteristically constituted of: a diagnosis mode change-over means to make the vehicle in a state free to diagnose; a means to collect the diagnosis data in accordance with the diagnosis items in the changed-over diagnosis mode: and a means to transmit the collected diagnosis data to the information center, in the remote failure diagnosis system of the vehicle to carry out the failure diagnosis of the vehicle in accordance with information transmitted to the information center by collecting with the on-vehicle terminal and transmitting state information of the vehicle and to carry out failure diagnosis of the vehicle in accordance with the transmitted information at the information center. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a remote fault diagnosis system for a vehicle, and particularly, collects vehicle information by an in-vehicle terminal and transmits the collected information to an information center. Also, the present invention relates to a remote failure diagnosis system in which an automobile repair company performs a failure diagnosis and returns a result of the diagnosis to an in-vehicle terminal.
[0002]
[Prior art]
2. Description of the Related Art At present, various controls are performed on an automobile by an electronic control unit (referred to as an ECU), and the control unit has a diagnostic function of a device to be controlled. Further, with the development of telematics technology, there is also a system in which a diagnosis result by the electronic control device is transmitted to an information center by a wireless transmission / reception device, and a driver is notified from the information center side. According to these techniques, when a failure occurs in a vehicle, diagnosis can be performed without transporting the vehicle to an automobile repair company.
[0003]
As a prior art, there is JP-A-10-194095. This discloses a method of diagnosing a vehicle from a remote place without directly touching the vehicle, and discloses that data is collected by a diagnostic data collection unit in the vehicle and wirelessly transmitted to a distant repair shop or the like.
[0004]
Also, there is JP-A-11-110689. This is a remote management system for vehicle information and maintenance information. Vehicle information on the driving information and the monitoring part is collected and transmitted to the base station of the vehicle. The base station calculates maintenance information based on the vehicle information and notifies the driver of driving guidance to prompt proper driving.
[0005]
[Problems to be solved by the invention]
Such a remote fault diagnosis system for a vehicle can perform remote diagnosis only in a range of a diagnostic function provided by an electronic control device in a vehicle, and there are other diagnostic items outside the range. Failures can be diagnosed only in specific situations, such as abnormal noise that changes depending on the position of the gears of the car, and failures can be diagnosed only after the car can not be run, such as a starter switch error. is there. In certain such situations, it is possible for a driver to accidentally operate the vehicle and cause a secondary breakdown. Some electronic control devices cannot physically diagnose the tire, such as a worn state of the tire and abnormal noise of the engine.
[0006]
An object of the present invention is to collect diagnostic data of a vehicle, in the diagnostic data, there is an item that cannot be diagnosed unless the vehicle is in a specific driving state. Then, a diagnostic mode switching signal is transmitted from the vehicle in advance so that the diagnostic data can be collected so that the vehicle can be diagnosed. It is another object of the present invention to provide a vehicle remote fault diagnosis system that collects vehicle information and performs diagnosis.
[0007]
[Means for Solving the Problems]
The remote fault diagnosis system according to the present invention is to perform a diagnosis after setting an electronic control unit to a diagnosis mode in which the electronic control unit can be diagnosed via an in-vehicle terminal from an information center with respect to a problem that some items can be diagnosed only in a specific situation. Is the means of solution. In order to solve the problem that a secondary failure occurs under a specific condition that can be diagnosed, providing a test mode switching approval function (confirmation of switching to the diagnostic mode) on the in-vehicle terminal is a solution. . Further, with respect to the problem that there is a diagnosis item that cannot be physically diagnosed by the electronic control device, the use of a camera-equipped mobile phone is used as a solution. Specifically, it can be solved by the following means.
[0008]
A system in which the vehicle-mounted terminal collects state information of the vehicle and transmits the collected information to an information center, and the information center performs a failure diagnosis of the vehicle based on the transmitted information, wherein the vehicle-mounted terminal is capable of diagnosing the vehicle. Diagnostic mode switching means, means for collecting diagnostic data in accordance with diagnostic items in the switched diagnostic mode, and means for transmitting the collected diagnostic data to the information center. is there.
[0009]
The information center may further include a transmission / reception unit that transmits the diagnostic data transmitted from the on-board terminal to another diagnostic institution or receives diagnostic result data from the other diagnostic institution, and a diagnostic result by the other diagnostic institution. And means for transmitting the received information to the in-vehicle terminal, and the in-vehicle terminal prohibits (limits) a specific driving operation from a driver in the diagnostic mode. Further, the diagnostic mode switching means for making the vehicle in the vehicle diagnosable state of the in-vehicle terminal may be switched to the diagnostic mode by a diagnostic mode switching signal in accordance with an instruction from the information center depending on the failure content received from the in-vehicle terminal. To switch. Further, the in-vehicle terminal issues an instruction to switch to a diagnostic mode based on a transmission gear position, a brake oil pressure, or a brake signal. Further, the information center receives a diagnosis target image signal or a diagnosis target sound by a camera or a microphone of the camera-equipped mobile phone, and performs a failure diagnosis of the vehicle. The information center is to issue a display instruction on a display of the mobile phone, for indicating or changing a camera position of the mobile phone or a position for collecting a diagnostic sound.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a system according to an embodiment of the present invention. The vehicle 1000 to be subjected to the remote failure diagnosis includes a sensor 1300 built in the vehicle, an actuator 1400, an external sensor 1500, an ECU 1200, and an in-vehicle terminal 1100. The ECU 1200 has a test mode switching function, and the in-vehicle terminal 1100 is provided with a test mode switching approval function (confirmation function). The driver 2000 has a mobile phone 2100.
[0011]
The driver 2000 can also use the mobile phone 2100 to transmit the abnormality content 6200 of the vehicle 1000 to the information center 4000 via the communication carrier 3000. The information center 4000 transmits a test mode switching signal 6300 to the in-vehicle terminal 1100 via the communication carrier 3000 in response to the abnormality content 6200, and activates the test mode switching function in the ECU 1200 by the test mode switching approval function. By the test mode switching function, the actuator 1400 puts the vehicle 1000 in a state in which the vehicle 1000 can be diagnosed. Since the built-in sensor 1300 outputs vehicle information 6100 relating to the vehicle 1000, the vehicle-mounted terminal 1100 collects data and transmits the vehicle information 6100 to the information center 4000 via the communication carrier 3000.
[0012]
The information center 4000 makes a diagnosis based on this data. However, if the information center does not allow the vehicle failure diagnosis or a more detailed diagnosis is required, the information center 4000 processes the vehicle information 6100 into diagnostic data 6500 and sends it to the automobile maintenance company 5000, where the vehicle maintenance is performed. The trader 5000 performs a failure diagnosis using the diagnosis data 6500. Then, a diagnosis result is created, and the diagnosis result data 6600 is transmitted to the information center 4000. The information center 4000 processes the diagnosis result data 6600 for the vehicle and creates a diagnosis result 6400. Then, the information center 4000 transmits the diagnosis result 6400 to the in-vehicle terminal 1100 via the communication carrier 3000.
[0013]
Specifically, the in-vehicle terminal 1100 has the configuration shown in FIG. 2, the ECU 1200, the actuator 1400, and the built-in sensor 1300 in the automobile have the configuration shown in FIG. 3, and the ECU 1200 has the configuration as shown in FIG. The information center 4000 has a system configuration as shown in FIG.
[0014]
In FIG. 2, an in-vehicle terminal 1100 includes one or more CPUs 1110 and an input / output device (I / O) 1120 for transmitting commands of the CPU 1110 to each device, a GPS receiver 1130 for measuring the speed or current position of the vehicle 1000, It has a GPS antenna 1140 for detecting radio waves from GPS satellites. Also, a wireless transmitting / receiving device 1150 for performing wireless communication, a wireless antenna 1160 for detecting radio waves of a communication medium, an information recording device 1170 for recording a test mode switching approval program 1171 and various programs and vehicle information 6100, and an input from the driver 2000 are provided. It comprises an operation input device 1180 to be accepted and a display 1190 for displaying a diagnosis result 6400 and the like. When wireless transmitting and receiving apparatus 1150 receives test mode switching signal 6300, CPU 1110 of in-vehicle terminal 1100 reads test mode switching approval program 1171 and transmits test mode switching signal 6300 to ECU 1120.
[0015]
In FIG. 3, a vehicle 1000 includes an in-vehicle terminal 1100, an ECU 1201 for engine control, an ECU 1202 for brake control, an ECU 1203 for starter control, and an ECU 1200 such as an ECU 1204 for ACC. Each ECU 1200 controls the actuator 1400 according to a control rule using information from the built-in sensor 1300 according to each purpose.
[0016]
FIG. 4 shows the configuration of ECU 1200 (FIGS. 1, 2, and 3). One or more CPUs 1210, various programs such as an I / O 1220 for transmitting commands of the CPU 1210 to each device, a test mode switching program 1231, and data 6700 from a built-in sensor (raw data from a sensor itself). And an information recording device 1230. When ECU 1200 receives test mode switching signal 6300, ECU 1200 transmits control command information 6800 to actuator 1400, sets the vehicle in a diagnostic mode capable of diagnosing, and prohibits driver 2000 from performing a specific driving operation.
[0017]
In FIG. 5, the in-center information system 4100 of the information center 4000 includes one or a plurality of information terminals, and an information terminal is operated by an operator 4300. The information system 4100 includes an information terminal CPU 4110, the information terminal I / O 4120, the information terminal printing device 4130, the information terminal transmission / reception device 4140, the information terminal information recording device 4150, the information terminal man-machine interface. 4160. Further, a driver information database 4210 for storing information on drivers, a diagnostic logic database 4220 for storing diagnostic logic, a diagnostic method database 4230 for storing detailed information on diagnostic methods, and a diagnostic result database for storing diagnostic results of all patterns. 4240, a database including a vehicle information type database 4250 that describes the type of vehicle information 6100 to be diagnosed.
[0018]
The information recording device 4150 includes a diagnosis program 4151 for automatically diagnosing a vehicle, a test mode switching signal generation program 4152, a printing program 4153 for printing a diagnosis result, and the like. In the information system 4100, when the transmission / reception device 4140 receives the content 6200 relating to the vehicle abnormality, the CPU 4110 receives the abnormality content 6200 via the I / O 4120, and reads out the diagnostic program 4151 from the information recording device 4150. The vehicle is diagnosed according to the contents of the vehicle information 6100 and the various databases 4210 to 4250. When the vehicle 1000 needs to be in the test mode in the diagnostic program 4151, the CPU 4110 reads the test mode switching signal generation program 4152, and instructs the transmission / reception device 4140 to transmit the test mode switching signal 6300 via the I / O 4120. I do.
[0019]
Also, as a result of the determination at the information center 4000, if the determination by the car mechanic 5000 is necessary, the operator 4300 instructs the man-machine interface 4160 to print the diagnostic data 6500 of the vehicle. The CPU 4110 receives a command from the man-machine interface 4160, reads and executes a print program 4153 to print the diagnostic data 6500 on the printing device 4130 via the I / O 4120. The diagnostic data 6500 printed by the printing device 4130 is handed over to the car mechanic 5000 by the operator 4300. The car mechanic 6500 reports the diagnosis result data 6600 to the operator 4300. The operator inputs the contents of the diagnosis result data 6600 via the man-machine interface 4160, and the CPU 4110 instructs the transmission / reception device 4140 to transmit the diagnosis result 6400. This is the outline of the information flow in the information center.
[0020]
6 to 9 are process flowcharts according to the embodiment of the present invention. The processing flow is composed of six phases of business start-up, member application procedure, failure diagnosis request, test mode switching, remote failure diagnosis, transmission of a diagnosis result, and test mode end processing. Hereinafter, description will be given in accordance with the processing flow for each phase.
[0021]
FIG. 6 is an explanatory diagram of the business start-up, member application, and failure diagnosis request phase. In the business start-up phase, the information center 4000 enters into a contract for information processing, that is, a contract for failure diagnosis, with the automobile maintenance company 5000. In addition, a contract for a communication carrier is made with the communication carrier 3000.
[0022]
In the member application procedure phase, the driver 2000 performs a member application process to the information center 4000 as a service member. The application process may be performed by either submitting an application form on which the member information is written or transmitting the member information via the Internet. The information center 4000 performs a membership registration procedure in accordance with the contents of the member information, and lends the driver 2000 the vehicle-mounted terminal 1100. The driver 2000 installs the in-vehicle terminal 1100 on the vehicle 1000.
[0023]
In the failure diagnosis request phase, the driver 2000 requests the information center 4000 to diagnose a failure. The information center 4000 performs an automatic failure diagnosis using the information system 4100 in the information center. When the vehicle 1000 needs to be in the test mode, the information center 4000 transmits a test mode switching signal 6300 to the in-vehicle terminal 1100 via the communication carrier 3000. When receiving the test mode switching signal 6300, the in-vehicle terminal 1100 performs an approval process for allowing the vehicle 1000 to switch to the test mode. The in-vehicle terminal 1100 is notified via the communication carrier 3000 to the information center 4000 that the test mode has been approved, that is, that the test mode has been enabled.
[0024]
FIG. 7 shows the test mode switching phase. In the test mode switching phase, the information center 4000 transmits information on the preparation for diagnosis to the in-vehicle terminal 1100 via the communication carrier 3000, and the in-vehicle terminal 1100 displays the contents of the preparation for diagnosis to the driver 2000. The driver 2000 prepares the vehicle 1000 for diagnosis in accordance with the preparation details. When the preparation for diagnosis is completed, the driver 2000 inputs a notification to the in-vehicle terminal 1100 that the preparation for diagnosis is completed. The vehicle-mounted terminal 1100 transmits a test mode switching signal 6300 to the ECU 1200 of the vehicle 1000, the vehicle 1000 performs a test mode switching process, and the vehicle 1000 switches the test mode to the information center 400 via the vehicle-mounted terminal 1100 and the communication carrier 3000. Communicate completion.
[0025]
FIG. 8 shows the remote failure diagnosis phase. In the remote failure diagnosis phase, the information center 4000 performs a test mode approval process, and as a result, a test mode signal for transmitting a diagnosis item to the in-vehicle terminal 1100 from the information center 4000 via the communication carrier 3000 is transmitted. The test mode authentication processing is performed in the in-vehicle terminal 1100, and if the test mode switching is authenticated, a test mode switching signal 6300 is transmitted to the vehicle 1000. The vehicle 1000 performs a test mode switching process. When the test mode switching is completed, the vehicle 1000 notifies the information center 4000 via the in-vehicle terminal 1100 and the communication carrier 3000 that the test mode switching is completed. This is the same as in FIG.
[0026]
The information center 4000 transmits a diagnostic item to the in-vehicle terminal 1100 via the communication carrier 3000. The in-vehicle terminal 1100 activates a diagnostic program based on the diagnostic items, and requests the vehicle 1000 to diagnose each item. The vehicle 1000 transmits vehicle information 6100 as diagnostic data to the information center 4000 via the in-vehicle terminal 1100 or the communication carrier 3000. When the information center 4000 exceeds the range of diagnosis by the information center, the information center 4000 creates the diagnostic data 6500 as the diagnostic data 6500 (for example, sometimes prints), and passes the person who printed the diagnostic data 6500 to the automobile maintenance company 5000 (or Send).
[0027]
The car mechanic 5000 makes a failure determination based on the print data 6500. In the diagnostic result transmission phase, the car mechanic 5000 passes the diagnostic result data 6600 to the information center 4000. The information center 4000 transmits the diagnosis result 6400 to the in-vehicle terminal 1100 via the communication carrier 3000 with respect to the diagnosis result 6400. The in-vehicle terminal 1100 transmits and displays the diagnosis result to the driver 2000.
[0028]
FIG. 9 shows the test mode end processing phase. When a test mode end trigger is applied in the information center 4000, the information center 4000 transmits a test mode end signal to the in-vehicle terminal 1100 via the communication carrier 3000. The in-vehicle terminal 1100 performs a test mode end process, and transmits a test mode switching signal 6300 to the vehicle 1000. The vehicle 1000 performs a test mode switching process, and switches from the test mode to the normal traveling mode. When the switching to the normal driving mode is completed, the vehicle 1000 notifies the information center 4000 via the in-vehicle terminal 1100 or the communication carrier 3000 that the test mode switching is completed. Further, the in-vehicle terminal 1100 indicates to the driver 2000 that the test mode has ended.
[0029]
FIG. 10 shows the configuration of the diagnostic logic database. The diagnostic logic stored in the diagnostic logic database 4220 (FIG. 5) includes an ID (4220a), which is a logic number, and a plurality of pieces of diagnostic sequence information (4220b). The diagnosis sequence information (4220c) represents one sequence of diagnosis, and includes a sequence ID, an execution order, a diagnosis method ID 4131, a diagnosis result ID (OK), and a diagnosis result ID (NG) 4241. . The diagnosis method ID 4231 indicates the ID of the diagnosis method in the diagnosis method database 4230 (FIG. 5) described later. The diagnosis result ID 4241 is the diagnosis result ID 4241 stored in the diagnosis result database 4220 or the next diagnosis sequence. It indicates the ID.
[0030]
When these are determined as OK and NG by the diagnosis method, two types are described. The diagnostic method described in the diagnostic method ID 4231 is executed in the order of the execution order in the diagnostic sequence information. If OK, the diagnostic result indicated by the diagnostic result ID 4241 (when OK) is output or the next diagnostic sequence is executed. , NG, the diagnostic result indicated by the diagnostic result ID 4241 (NG) is output. Then, the next diagnostic sequence is executed.
[0031]
FIG. 11 shows the configuration of the diagnostic technique database 4230 shown in FIG. The diagnostic method stored in the diagnostic method database 4230 includes an ID 4231 which is a method number, a remote diagnosis enable / disable flag, a test mode necessary / unnecessary flag, a camera required / unnecessary flag, a maintenance company intervention required / unnecessary flag, There are information such as the number of vehicle information, the vehicle information specification for the number of vehicle information, the actuator operation information, the diagnosis OK condition, and the diagnosis NG condition.
[0032]
The remote diagnosis possible / impossible flag is a flag indicating whether remote diagnosis is currently possible. If this flag indicates that remote diagnosis cannot be performed, the remote diagnosis is interrupted and the vehicle 1000 is brought to the automobile maintenance company 5000. Ask to come. The test mode necessary / unnecessary flag indicates whether test mode switching is necessary at the time of diagnosis. If necessary, test mode signal transmission processing is performed, and operation of the driver 2000 on the vehicle 1000 is prohibited. . The camera necessity / unnecessity flag indicates whether image information is necessary for diagnosis, and requests the driver 2000 to take an image using the camera-equipped mobile phone 2100 if image information is necessary. The mechanic intervention required / unnecessary flag is a flag indicating whether or not the intervention of the automobile mechanic 5000 is necessary. When this flag indicates the necessity, the information center 4000 prints the diagnostic data 6500 and passes it to the automobile mechanic 5000. Then, the diagnosis result data 6600 is obtained from the automobile maintenance company 5000.
[0033]
The vehicle information specification indicates vehicle information collected from the vehicle 1000. The vehicle information specification includes a vehicle information type ID 4251, a collection interval, a collection time, and the like. The vehicle information type ID 4251 corresponds to the vehicle information type ID 4251 stored in a vehicle information type database 4250 (FIG. 5) described later. The collection time is the collection time of the vehicle information 6100 (FIG. 1) necessary for diagnosis, and the collection interval is the collection interval of the vehicle information 6100. The actuator operation information is information related to the operation of the actuator 1400 (FIG. 1) necessary for diagnosis, and is composed of the number of operation actuators and each piece of actuator information corresponding to the number of operation actuators. Each actuator information is composed of an ID, the number of parameters, a parameter type and its value. The parameter type and its value consist of a vehicle information type ID 4251 and a value, and the vehicle information type ID 4251 corresponds to the vehicle information type ID 4251 stored in the vehicle information type database 4250. According to the actuator operation information, the actuator 1400 can put the vehicle 1000 into a test mode. The diagnosis OK condition is a condition for judging that the diagnosis is normal, and the opposite of the diagnosis NG condition.
[0034]
FIG. 12 shows the configuration of the diagnosis result database 4240 (FIG. 5). The diagnosis result in the diagnosis result database 4240 is made up of an ID 4241 and diagnosis result information 4242. The ID 4241 can be used in the diagnosis logic database 4220 both at the time of OK and at the time of NG. FIG. 13 shows the configuration of the vehicle information type 4250 (FIG. 5). The vehicle information type in the vehicle information type database 4250 is made up of information 4252 that includes an ID 4251, a name, and either an actuator or a sensor.
[0035]
FIG. 14 shows the configuration of the driver information database 4210. There is one driver information in the driver information database 4210 for every 2000 drivers. The driver information includes a driver ID, a driver name, a contact address indicating an address and a telephone number, a number of vehicles indicating the number of vehicles 1000 specified by the driver 2000, and a vehicle unique information indicating information on the vehicle 1000 not involved in traveling. It consists of information, a login name and a password for determining whether or not the user is a service member. The vehicle-specific information includes a vehicle ID, a sign number, a vehicle type, a model, a travel history ID indicating a repair history, and other information necessary for a service.
[0036]
FIG. 15 is a processing flow chart of the test mode switching approval in the vehicle-mounted terminal 1100. 2 and 3, the process corresponds to the mode switching completion transmission process from the test mode approval process. The vehicle-mounted terminal 1100 receives the test mode switching signal 6300 from the information center 4000 in step 15a. The in-vehicle terminal 1100 operates in step 15b to operate the foot & side brake and set the gear position to parking. In step 15c, if the driver 2000 operates the foot & side brake and the gear position is parking, the ECU 1200 is switched to the test mode in step 15d. If there is a response from ECU 1200, the process ends in step 15e. If the driver 2000 does not operate the foot and side brake, the gear position is not parking, or there is no response several times (step 15f), the processing ends abnormally. FIG. 18 shows an example of a screen transition diagram at this time. The screen 7100 corresponds to the process of displaying the operation of the foot and side brake and the gear position as parking. The screen 7200 corresponds to the processing for switching the ECU to the test mode, the screen 7300 and the screen 7500 at the time of termination, and the screen 7400 at the time of abnormal termination.
[0037]
FIG. 16 is a circuit diagram of a starter of an automobile, which is one of the targets of the failure diagnosis in the embodiment of the diagnosis that requires the test mode switching. The starter includes a battery 1410, a magnet switch 1420, a motor 1430, and a starter switch 1440. The motor 1430 and the magnet switch 1420 are connected by an M terminal 1421, and the battery 1410 and the magnet switch 1420 are connected by a B terminal 1422 and a C terminal 1423. The C terminal 1423 is connected to the ground. For diagnosis, a battery voltage measuring device 1310, a BM terminal voltage measuring device 1320, a C terminal wiring side voltage measuring device 1330, and a C terminal disconnection switch 1450 are provided.
[0038]
FIG. 17 shows a part of a process flow showing a remote fault diagnosis of the starter. First, the battery voltage measuring device 1310 checks the voltage 6710 of the battery 1410 (step 17a), and outputs a diagnosis result indicating that there is a problem with the battery 1410 or the charging device if the voltage is less than a specified value, for example, 12V (step 17m). If not, the starter switch 1440 is turned ON (step 17b), and the operation sound of the magnet switch 1420 is collected by the microphone 2160 of the mobile phone 2100 (FIG. 19) (step 17c) and transmitted to the information center 4000. If there is an operation sound (step 17d), the starter switch 1440 is turned off (step 17e) and the diagnosis is continued. The subsequent diagnosis is omitted because the test mode is unnecessary.
[0039]
If there is no operation sound of the magnet switch 1420, a test mode switching process (step 17f) is performed, and the wiring of the C terminal 1423 is disconnected by the C terminal disconnection switch 1450 (step 17g). It is checked whether or not the C terminal wiring side voltage 6730 is equal to or more than a specified value, for example, 12 V (step 17h). If the voltage is equal to or more than the specified value, the diagnosis result 6400 is determined as a defect of the magnet switch 1420 (step 17j). The result 6400 is regarded as an abnormality around the starter switch 1440 (step 17i). Finally, the test mode ends (step 17k).
[0040]
FIG. 19 shows a configuration of a mobile phone 2100 owned by the driver 2000. The mobile phone 2100 includes a microphone 2160, an antenna 2110, a camera 2120, a display 2130, a speaker 2140, and input keys 2150. Basically, it is used for communication with the information center 4000. The camera 2120 and the display 2130 are used for visual judgment, the microphone 2160 is used for abnormal sound judgment, and images and sounds are transmitted to the information center 4000. Can be utilized as auxiliary diagnostic data for difficult conditions.
[0041]
FIG. 20 is a diagram illustrating a system configuration example of the mobile phone 2100. The mobile phone 2100 includes one or a plurality of CPUs 2101, an I / O 2102 for transmitting instructions of the CPU 2101 to each device, a storage device 2103 for storing image or audio information and various programs, a test mode switching device 2104 for switching test modes, It comprises a signal processing device 2105 that processes sound from the microphone 2160 and an image processing device 2106 that processes images from the camera 2120. When test mode switching signal 6300 is input to test mode switching device 2104, signal processing device 2105 or image processing device 2106 executes signal processing or image processing unique to the test mode.
[0042]
FIG. 21 shows designation of a location to be photographed as a diagnosis target on a mobile phone. For example, when the information center 4000 needs to photograph a certain location in the trunk room for diagnosis, the driver 2000 causes the camera-equipped mobile phone 2100 to photograph the trunk room. In this case, a photographed image of the camera 2120 is displayed on the display 2130, and a portion to be photographed is indicated by an arrow 2131 to inform the driver 2000 as a photographer of the photographed portion. By doing so, more appropriate image information can be collected.
[0043]
FIG. 22 shows an instruction for a camera angle change request in a camera-equipped mobile phone. For example, when the position to be photographed is out of the photographing range of the camera 2120, the information center 4000 can instruct the driver 2000 to move the camera 2120 with an arrow 2132 on the display 2130.
[0044]
FIG. 23 shows a processing flow of the mobile phone in consideration of the test mode switching. The mobile phone 2100 receives the test mode switching signal 6300 (Step 23a) and receives information on the type of the audio / image signal (Step 23b). Here, the audio frequency band specific to the test mode or the RGB frequency of the image is restricted (step 23c), photographing or audio recording is performed (step 23d), and the image or audio file is transmitted to the information center 4000. (Step 23e). When the transmission is completed, the test mode ends (step 23f).
[0045]
The remote failure diagnosis system of the present invention solves the problem that there is an item that can be diagnosed only in a specific situation by using a test mode switching function of the electronic control unit. In order to solve the problem that a secondary failure occurs under a specific condition that can be diagnosed, providing an authentication function for switching the test mode on the in-vehicle terminal is a solution. Furthermore, for the problem that there is a diagnostic item that cannot be physically diagnosed by the electronic control unit, image information or sound information is added by using a camera or a mobile phone with a microphone, and a more accurate diagnosis is performed. be able to. In addition, the operation of the driver can be prohibited by the test mode switching approval function in the vehicle-mounted terminal, so that a secondary failure during the diagnosis can be avoided.
[0046]
【The invention's effect】
According to the present invention, by using the test mode switching function of the electronic control unit, it is possible to diagnose even a failure that can be diagnosed only in a specific situation. By using a camera-equipped mobile phone, diagnosis such as visual judgment and abnormal sound judgment is also possible.
[Brief description of the drawings]
FIG. 1 is a block diagram of a system according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating a configuration of an in-vehicle terminal.
FIG. 3 is a diagram showing a configuration of an ECU, an actuator, and a sensor in an automobile.
FIG. 4 is a diagram illustrating an example of a system configuration of an ECU.
FIG. 5 is a system configuration diagram of an information center.
FIG. 6 is a process flow chart in the embodiment of the present invention (starting up a business, applying for a member, requesting a failure diagnosis).
FIG. 7 is a process flow chart in the embodiment of the present invention (test mode switching).
FIG. 8 is a processing flowchart in the embodiment of the present invention (remote failure diagnosis, transmission of diagnosis result).
FIG. 9 is a process flow diagram in the embodiment of the present invention (test mode end).
FIG. 10 is a diagram showing a configuration of a diagnostic logic database.
FIG. 11 is a diagram showing a configuration of a diagnostic technique database.
FIG. 12 is a diagram showing a configuration of a diagnosis result database.
FIG. 13 is a diagram showing a configuration of a vehicle information type database.
FIG. 14 is a diagram showing a configuration of a driver information database.
FIG. 15 is a processing flowchart of test mode switching authentication in the vehicle-mounted terminal.
FIG. 16 is a circuit example of a starter of an automobile as an example of a failure diagnosis target.
FIG. 17 is a processing flowchart of a remote fault diagnosis of a starter.
FIG. 18 is a screen transition diagram of the vehicle-mounted terminal during the test mode.
FIG. 19 is a diagram showing a configuration of a mobile phone owned by a driver.
FIG. 20 is a system configuration diagram of a mobile phone.
FIG. 21 is a diagram illustrating an example of specifying a location to be imaged as a diagnosis target on a mobile phone.
FIG. 22 is a diagram illustrating an example of an instruction for a camera angle change request on a mobile phone.
FIG. 23 is a flowchart of a process performed by the mobile phone in consideration of test mode switching.
[Explanation of symbols]
1000; vehicle 1100; on-board terminal 1110; on-board terminal CPU 1120; on-board terminal I / O 1130; GPS receiver 1140;
1150; wireless transmission / reception device 1160; wireless antenna 1170; information recording device for in-vehicle terminal 1171; test mode switching approval program 1230; ECU I / O 1330; C terminal wiring side voltage measuring instrument 1400; actuator 1430; motor 2100; 2120; Cell phone camera 2105; Signal processing device 2106; Image processing device 3000; Telecommunications carrier 4000; Information center 4100; Information system in information center.

Claims (6)

The vehicle-mounted terminal collects vehicle state information and transmits the collected information to an information center, and the information center diagnoses the vehicle based on the transmitted information. Diagnostic mode switching means for enabling the diagnostic mode, means for collecting diagnostic data according to the diagnostic items in the switched diagnostic mode, and means for transmitting the collected diagnostic data to the information center. A remote fault diagnosis system for vehicles. 2. The transmission / reception unit according to claim 1, wherein the information center transmits and receives diagnostic data transmitted from the on-board terminal to another diagnostic institution or receives diagnostic result data from the other diagnostic institution, and the other diagnostic institution. A remote failure diagnosis system for a vehicle, comprising: means for receiving a diagnosis result by the above and transmitting the result to the in-vehicle terminal. 2. The diagnostic mode switching unit according to claim 1, wherein the diagnostic mode switching means for making the vehicle in a state in which the vehicle can be diagnosed by the diagnostic mode switching signal according to an instruction from the information center depending on the failure content received from the in-vehicle terminal. A remote failure diagnosis system for a vehicle, wherein the system switches to a diagnosis mode. 2. The remote failure diagnosis system for a vehicle according to claim 1, wherein the in-vehicle terminal issues a switching instruction to a diagnosis mode based on a transmission gear position, a brake oil pressure, or a brake signal. 2. The remote failure diagnosis system for a vehicle according to claim 1, wherein the information center receives a diagnosis target image signal or a diagnosis target sound from a camera or a microphone of the camera-equipped mobile phone and performs a failure diagnosis on the vehicle. 6. The remote failure diagnosis system for a vehicle according to claim 5, wherein the information center issues a display instruction of an instruction or a change instruction of a camera position of the mobile phone or a position at which a diagnostic sound is collected by a display of the mobile phone. .

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