JP2009025244A - Vehicle controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow control of a diagnosis function of a vehicle state and navigation function in cooperation with each other. <P>SOLUTION: A vehicle controller 10 includes a CPU 20 for diagnosis device, a vehicle state detection part 22, an imaging device interface 24, a CPU 40 for navigation device, a navigation display 42, a GPS interface 44, and a storage part 60. The CPU 20 for diagnosis device, the CPU 40 for navigation device, and the storage part 60 are connected with each other via an internal bus. The CPU 40 for navigation device includes a travel route calculation module 50, a diagnosis result acquisition module 52 acquiring a diagnosis result diagnosed by the CPU 20 for diagnosis device, and a travel route re-calculation module 54 re-calculating a recommended route on the basis of the acquired diagnosis result. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle control device, and more particularly to a vehicle control device in a vehicle having a diagnostic device for diagnosing a vehicle state and a navigation device.

  Some vehicles have a navigation function for calculating a recommended route from a current position to a target position and displaying the calculated route on a screen such as a display. Here, since large-scale data such as map information is necessary to execute the navigation function, a large-capacity HDD is used as a storage device. The vehicle is equipped with a device that performs processing using other stored data. In this case, a large-capacity HDD used for the navigation function may be used as a storage device for that purpose. is there.

  For example, Patent Document 1 discloses using the large capacity of the HDD of the navigation device, using it as a storage device of the vehicle diagnostic device, and displaying a message of the diagnosis result on the display device of the navigation device. Has been.

  Further, Patent Document 2 discloses that image data inside and outside the vehicle imaged by an image image sensor is compressed and stored in an HDD of a car navigation system, and this data is read out and displayed on an LCD touch panel.

JP 2006-44550 A Japanese Patent Laid-Open No. 2005-102087

  Thus, in the prior art, it is disclosed that the large capacity HDD used for the navigation function is used for other purposes. However, in the prior art, only the extra storage capacity of the large-capacity HDD used for the navigation function is used for other purposes, and it does not add value to the navigation function. For example, Patent Document 1 describes that a vehicle diagnostic device uses a storage device of a navigation device, but does not allow the diagnostic function of the vehicle diagnostic device and the navigation function of the navigation device to work cooperatively. Absent.

  An object of the present invention is to provide a vehicle control device that enables cooperative control of a vehicle state diagnosis function and a navigation function. Another object is to provide a vehicle control device that can improve the diagnostic function of a vehicle by using information stored in a storage device used for a navigation function. The following means contribute to at least one of the above objects.

  The vehicle control device according to the present invention includes a diagnosis unit that diagnoses a vehicle state, and a travel route calculation that obtains a recommended route based on a predetermined criterion among travel routes between the current position and the destination of the vehicle. And a display unit for displaying the calculated travel route, and the travel route calculation unit includes means for recalculating the recommended route based on the diagnosis result of the diagnosis unit.

  In the vehicle control device according to the present invention, the diagnosis unit obtains a charge state of the power storage device of the vehicle and outputs the diagnosis result to the travel route calculation unit when diagnosing the overcharge state or the overdischarge state. The travel route calculation unit calculates, based on the diagnosis result received from the diagnosis unit, the recommended route as a route that prioritizes a road that travels with the rotating electrical machine of the vehicle as a drive source in an overcharged state. In an overdischarged state, it is preferable to calculate, as a recommended route, a route that prioritizes a road that is regenerated using the rotating electrical machine of the vehicle as a generator.

  The vehicle control apparatus according to the present invention further includes a storage unit that is used in common for storing diagnostic data used in the diagnostic unit and storing navigation data used in the travel route calculation unit and the display unit. It is preferable.

  Further, in the vehicle control device according to the present invention, the diagnosis unit obtains a vehicle state when the vehicle is being charged as charging information and stores it in the storage unit, and a vehicle periphery when the vehicle is being charged. Means for acquiring data obtained by imaging the state of the vehicle with an external imager as external monitoring information and storing it in the storage unit, and means for diagnosing the vehicle state during charging based on the stored charging information and external monitoring information It is preferable to have.

  In the vehicle control device according to the present invention, it is preferable that the display unit displays at least one of the stored charging information and external monitoring information.

  With the above configuration, in the vehicle control device, the travel route calculation unit recalculates the recommended route based on the diagnosis result of the diagnosis unit. As a result, the vehicle state diagnosis function and the navigation function can be cooperatively controlled.

  Further, in the vehicle control device, the diagnosis unit acquires the charge state of the power storage device of the vehicle, and when diagnosing the overcharge state or the overdischarge state, outputs the diagnosis result to the travel route calculation unit. Based on the diagnosis result received from the diagnosis unit, the calculation unit calculates a travel route with a large travel load as a recommended route in an overcharge state, and calculates a travel route with a low travel load as a recommended route in an overdischarge state. To do. In this way, the vehicle state diagnosis function and the navigation function can be cooperatively controlled.

  In addition, the vehicle control device includes a storage unit that is used in common for storing diagnostic data used in the diagnostic unit and storing navigation data used in the travel route calculation unit and the display unit. Therefore, the number of storage devices can be reduced, and convenience is improved in the cooperative control of the vehicle state diagnosis function and the navigation function.

  Further, in the vehicle control device, the diagnosis unit obtains the vehicle state when the vehicle is being charged as charging information and stores it in the storage unit, and stores the state around the vehicle when the vehicle is being charged. The data picked up in (1) is acquired as external monitoring information and stored in the storage unit, and the state of the vehicle being charged is diagnosed based on the stored charging information and external monitoring information. This makes it possible to improve the vehicle diagnosis function by using information stored in the storage device used for the navigation function.

  In the vehicle control device, the display unit displays at least one of the stored charging information and external monitoring information. In this manner, the vehicle diagnosis function can be improved by using the storage device and the display unit used for the navigation function.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram illustrating a configuration of the vehicle control device 10. The vehicle control device 10 has a function of cooperatively controlling the function of the diagnostic device mounted on the vehicle and the function of the navigation device mounted on the vehicle.

  The vehicle control device 10 includes a diagnostic device CPU 20, a vehicle state detection unit 22 connected to the diagnostic device CPU 20, and an imager interface 24 that is also connected to the diagnostic device CPU 20. These are the main components of the diagnosis unit that diagnoses the vehicle state. The vehicle control device 10 includes a navigation device CPU 40, a navigation indicator 42 connected to the navigation device CPU 40, and a GPS interface 44 also connected to the navigation device CPU 40. These are the main components for executing a navigation function for calculating and displaying a recommended path between the current position of the vehicle and the target position. Furthermore, the vehicle control device 10 includes a storage unit 60.

  The diagnostic device CPU 20, the navigation device CPU 40, and the storage unit 60 are connected to each other via an internal bus. Therefore, the storage unit 60 is used in common for storing diagnostic data used for the diagnostic unit and storing navigation data used for executing the navigation function. As described above, the vehicle control device 10 has a configuration in which the functions of the vehicle diagnostic device and the functions of the navigation device are fused and act cooperatively. Here, broadly, the elements for the diagnostic function are the diagnostic device CPU 20, the vehicle state detection unit 22, the imager interface 24, and a part of the storage unit 60, and the elements for the navigation function are It can be said that the navigation device CPU 40, the navigation indicator 42, the GPS interface 44, and a part of the storage unit 60. The vehicle control device 10 can be configured by a computer suitable for mounting on a vehicle.

  The vehicle state detection unit 22 has a function of detecting the state of each element of the vehicle when the vehicle is running. For example, a vehicle speed detector that detects the vehicle speed, an engine speed detector that detects the engine speed, an accelerator opening detector that detects the accelerator opening, and the like are included.

  Further, in a hybrid vehicle in which the vehicle includes an engine and a rotating electrical machine, an SOC determination unit that determines a state of charge of the power storage device (State Of Charge), a rotating electrical machine rotational speed detection unit that detects the rotational speed of the rotating electrical machine, and cooling water A cooling water temperature detection unit for detecting the temperature of the vehicle is included in the vehicle state detection unit 22.

  In addition, in a vehicle equipped with a fuel cell, the vehicle state detection unit includes a power generation state determination unit that determines the power generation state of the fuel cell, a fuel cell cooling water temperature detection unit that detects the temperature of cooling water for the fuel cell, and the like. It is.

  As the data indicating the vehicle state, the output data of the sensor device provided in each element constituting the vehicle can be used, and the data calculated based on the input signal or the output signal of the vehicle control device is used. Can do. Therefore, here, the vehicle state detection unit 22 is used in a broad sense including not only a sensor device but also a vehicle control device.

  The imager interface 24 is an interface unit that is provided in a vehicle and has a function of giving an imaging instruction to an imager that images the outside of the vehicle and receiving captured data. The imaging device may capture an interior of the vehicle. Moreover, what is called an external imaging device provided in the facility outside the vehicle may be used instead of being provided in the vehicle. Examples of such an external imaging device include a monitoring device in a parking lot and a monitoring device in a gas station. In order to communicate with these external imaging devices, for example, radio waves can be used.

  In the case of a hybrid vehicle, a monitoring device at a charging station can be used as the external imaging device. At this time, since the hybrid vehicle and the charging station are connected by a power supply line, the so-called PLC (Power Line Communication) technology can be used to communicate with the monitoring device via the power supply line. In this case, the imager interface 24 is configured by an interface circuit using PLC technology.

  The navigation indicator 42 is a small display having a function of displaying a recommended path between the current position of the vehicle and the target position, and is a display provided in the vehicle interior.

  The GPS interface 44 is an interface circuit that receives data indicating the current position of the vehicle by the GPS method.

  The storage unit 60 is originally a storage device for a navigation device, but also stores data used for the function of the diagnostic device. What is stored in the storage unit 60 is broadly divided into diagnostic data 62 and navigation data 68 in addition to various programs used in the vehicle control device 10. The diagnosis data 62 includes data acquired from the vehicle state detection unit 22, vehicle state information 64 that is processed data thereof, data acquired from the imager interface 24, and external monitoring information 66 that is processed data thereof. Is included. The navigation data 68 includes map information and the like. In addition, various programs calculate the current position from the data acquired from the GPS interface 44, display this on the map information, calculate a recommended route from the current position to the target position, A program for displaying on information is included.

  The diagnostic device CPU 20 includes a state diagnosis module 30, a vehicle state acquisition module 32 that acquires data from the vehicle state detection unit 22, and an external monitoring state acquisition module 34 that acquires data from the imager interface 24. Composed. Data acquired by the vehicle state acquisition module 32 is stored as vehicle state information 64 in the storage unit 60. The data acquired by the external monitoring status acquisition module 34 is stored as external monitoring information in the storage unit 60.

  The state diagnosis module 30 determines whether or not the vehicle state is normal based on various data according to predetermined criteria. If the vehicle state is not normal, it analyzes the cause and diagnoses the result. It has a function to output as a result. The output of the diagnosis result can be displayed on the navigation display 42 in addition to being displayed with an abnormality display lamp or the like, for example.

  Various types of data serving as a basis for diagnosis are vehicle state information 64 and external monitoring information 66 stored in the storage unit 60. Therefore, the data in the storage unit 60 shared by the navigation function and the diagnosis function is used for the vehicle state diagnosis.

  For example, when the state of charge of the power storage device determined by the SOC determination unit is acquired via the vehicle state detection unit 22, it is temporarily stored as vehicle state information 64 in the storage unit 60. Then, the state diagnosis module 30 reads these data from the storage unit 60, adds other necessary information, and determines whether or not the power storage device is in a normal charge state according to a predetermined diagnosis standard. If it is determined that it is not normal, it is next determined whether it is in an overcharge state or an overdischarge state. Thus, the diagnosis of the vehicle state is executed using the data in the storage unit 60.

  As another example, when the hybrid vehicle is being charged at the charging station and the imaging data of the monitoring camera of the charging station is acquired via the imager interface 24 by the PLC technology, the acquired image data is acquired. Is temporarily stored as external monitoring information in the storage unit 60. Then, the state diagnosis module 30 reads these data from the storage unit 60, adds other necessary information, and determines whether the external situation of the vehicle being charged is normal according to a predetermined diagnosis standard. . The read image data is converted into image data and displayed on the navigation display 42. The display can also be performed in real time. Thus, the diagnosis of the vehicle state is executed using the data in the storage unit 60 and displayed on the navigation display 42.

  The navigation device CPU 40 includes a travel route calculation module 50 that calculates a recommended route from the current position to the target position, a diagnosis result acquisition module 52 that acquires a diagnosis result diagnosed by the diagnosis device CPU 20, and an acquired diagnosis result. And a traveling route recalculation module 54 for recalculating the recommended route based on the above. The calculated or recalculated recommended path is displayed on the navigation display 42.

  The operation of the above configuration, particularly the function executed in cooperation by the diagnostic device CPU 20 and the navigation device CPU 40, will be described with reference to FIGS. Below, it demonstrates using the code | symbol of FIG.

  FIG. 2 is a diagram illustrating how the recommended route is changed by the function of the navigation device CPU 40 when the vehicle state is determined to be abnormal by the function of the diagnostic device CPU 20.

  FIG. 2 is a diagram schematically showing the contents displayed on the navigation display 42, and the current position 72 and the target position 74 are shown on the map. A recommended route 76 once calculated by the travel route calculation module 50 of the navigation device CPU 40 is indicated by a broken line. As the recommended path 76, a path obtained by applying the shortest path calculation method used in the prior art can be used. FIG. 2 schematically shows the vehicle 70 traveling along this recommended path 76.

  In the diagnostic device CPU 20, the state diagnosis module 30 continuously determines whether or not the vehicle state is normal based on the vehicle state information 64 acquired from the vehicle state detection unit 22 and stored in the storage unit 60 even during the traveling. Diagnose. Here, the point 80 is a point where it is diagnosed that the vehicle state is not normal. Here, it is determined that the state of charge of the power storage device mounted on the vehicle is not normal, and it is further diagnosed that the power storage device is overdischarged.

  The state diagnosis module 30 of the diagnostic device CPU 20 displays the diagnosis result with an appropriate warning lamp and transmits the diagnosis result to the navigation device CPU 40. In the navigation device CPU 40, the diagnosis result acquisition module 52 receives the diagnosis result, and the travel route recalculation module 54 calculates a new recommended route based on the diagnosis result.

  In order to recalculate the travel route based on the diagnosis result, a recalculation reference according to the diagnosis result can be set in advance. For example, as described above, when the state of charge of the power storage device is not normal, in the case of overcharge, a route that prioritizes a road that travels with the rotating electrical machine of the vehicle as a drive source, for example, a route that prioritizes an uphill is recommended. In an overdischarged state, a route that prioritizes a road that regenerates the rotating electrical machine of the vehicle as a generator, for example, a route that prioritizes downhill is recommended. Also, a path that avoids downhill is recommended when a brake failure occurs.

  If the diagnosis result is overdischarged at the point 80 in FIG. 2, the traveling route recalculation module 54 prohibits the climbing slope and adds a condition that gives priority to the descending slope route over the flat ground. To the target position 74 is calculated. In FIG. 2, the calculated new recommended path 82 is shown by a solid line. In addition, the recommended route 77 until now after the point 80 is shown with the broken line for reference.

  In this way, the recommended route to the target position is updated in accordance with the current vehicle state by the cooperation of the diagnostic device CPU 20 and the navigation device CPU 40.

  FIG. 3 is a diagram illustrating a state of diagnosing a charging state when the battery mounted on the vehicle is a hybrid vehicle that can be charged by an external power source. Below, it demonstrates using the code | symbol of FIG. FIG. 3 shows a state where the vehicle 70 is being charged at the charging station 100. Then, the monitoring data of the monitoring camera 104 provided in the charging stand 100 uses the power supply line 102 that electrically connects the vehicle 70 and the charging stand 100, and the diagnostic device CPU 20 via the imager interface 24 by PLC technology. Is transmitted. In FIG. 3, the monitoring camera 104 captures the behavior of the person 106 in the vicinity of the vehicle 70, the state of the building 108 in the vicinity of the vehicle, etc. in addition to the state of power supply in the vehicle 70, and transmits the image to the diagnostic device CPU 20. . In addition, a change in the state of charge of the power storage device being charged is transmitted to the diagnostic device CPU 20 via the vehicle state detection unit 22.

  The transmitted data is stored in the storage unit 60 as external monitoring information 66 and charging information 110. Then, based on the stored charging information 110, the state diagnosis module 30 performs a diagnosis of the state of the vehicle being charged. Further, based on the external monitoring information 66, it is determined whether there is an abnormality in the situation around the vehicle 70 being charged. Further, the external monitoring information 66 transmitted by the PLC technology is converted into image data, and is displayed on the navigation display 42 in real time, for example, and provided to the driver in the vehicle compartment.

  In addition, it can also image using the vehicle-mounted camera mounted in the vehicle. For example, the situation outside the vehicle is imaged using an in-vehicle camera used for a system that recognizes a white line on a road and secures a traveling lane, and this is used as external monitoring information 66 and charging information 110 as a storage unit 60. Can be stored and used. Then, the power source of the in-vehicle camera can be driven by the power of the battery charged by the external power source being stepped down by the DC / DC converter.

  Thus, the state of the vehicle being charged is diagnosed based on information stored in the storage unit 60 shared for the vehicle diagnostic device and the navigation device. Further, the state around the vehicle being charged is acquired by the diagnostic device CPU 20 and displayed on the navigation display 42 using the function of the navigation device CPU 40. In this way, cooperation between the diagnostic device CPU 20 and the navigation device CPU 40 is performed.

It is a figure which shows the structure of the control apparatus for vehicles of embodiment which concerns on this invention. When the state of the vehicle is determined to be abnormal by the function of the diagnostic device CPU according to the embodiment of the present invention, the result is a diagram showing how the recommended path is changed by the function of the navigation device CPU. is there. In embodiment which concerns on this invention, when a vehicle is a hybrid vehicle, it is a figure which shows a mode that the state in charge is diagnosed.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Vehicle control device, 20 Diagnostic device CPU, 22 Vehicle state detection unit, 24 Imager interface, 30 State diagnosis module, 32 Vehicle state acquisition module, 34 External monitoring state acquisition module, 40 Navigation device CPU, 42 Navigation display Device, 44 GPS interface, 50 travel route calculation module, 52 diagnostic result acquisition module, 54 travel route recalculation module, 60 storage unit, 62 diagnostic data, 64 vehicle state information, 66 external monitoring information, 68 navigation data, 70 Vehicle, 72 Current position, 74 Target position, 76, 77, 82 Recommended route, 80 points, 100 Charging stand, 102 Power supply line, 104 Surveillance camera, 106 people, 108 building, 110 Charging information.

Claims (5)

A diagnostic unit for diagnosing the vehicle state;
A traveling route calculation unit that obtains a recommended route based on a predetermined criterion in the traveling route between the current location and the destination of the vehicle;
A display for displaying the calculated travel route;
With
The travel route calculation unit
A vehicle control apparatus comprising means for recalculating a recommended route based on a diagnosis result of a diagnosis unit. The vehicle control device according to claim 1,
The diagnosis unit has a means for acquiring the charge state of the power storage device of the vehicle and outputting the diagnosis result to the travel path calculation unit when diagnosing an overcharge state or an overdischarge state,
Based on the diagnosis result received from the diagnosis unit, the travel route calculation unit calculates a route that gives priority to the road that travels using the rotating electrical machine of the vehicle as a drive source in the overcharge state, and in the overdischarge state, A vehicular control device that calculates, as a recommended path, a path that gives priority to a road that is regenerated using a rotating electrical machine of a vehicle as a generator. The vehicle control device according to claim 1,
A vehicle control device comprising a storage unit that is used in common for storing diagnostic data used in a diagnostic unit and storing navigation data used in a travel route calculation unit and a display unit. The vehicle control device according to claim 3,
The diagnostic department
Means for acquiring the vehicle state when the vehicle is being charged as charging information and storing it in the storage unit;
Means for acquiring, as external monitoring information, data obtained by capturing an image of a state around the vehicle when the vehicle is being charged with an external imager, and storing the data in a storage unit;
Means for diagnosing the state of the vehicle being charged based on the stored charging information and external monitoring information;
A vehicle control device characterized by comprising: The vehicle control device according to claim 4,
The display unit displays at least one of stored charging information and external monitoring information.

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