JP2019018836A - vehicle - Google Patents

Abstract

To attain an interface for making notification to an occupant from an automatic operation system at a low cost while conforming to functional safety standards.SOLUTION: In an autonomously travelling vehicle 1, a first display part 12 is disposed so as to be visible by a driver, a second display part 22 is disposed so as to be visible by the driver, the first display part 12 can display information on at least autonomous travel, and the second display part 22 can display at least a map and information on the autonomous travel. A first control part 11 connected to the first display part 12 is operated by a real time OS (Operating System), and a second control part 21 connected to the second display part 22 is operated by a non-real time OS (Operating System).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle capable of automatic traveling.

  In recent years, the development of autonomous vehicles has accelerated. NHTSA (National Highway Traffic Safety Administration) adopted the definition of automatic driving level of SAE (Society of Automotive Engineers) in 2016, automatic driving level is not automatic driving (level 0), driver assistance (level 1), It was classified into partial operation automation (level 2), conditional operation automation (level 3), advanced operation automation (level 4), and fully automatic operation (level 5).

  At level 0, the human driver does everything. At level 1, the vehicle automation system can sometimes assist a human driver and perform several driving tasks. At level 2, the vehicle automation system can effectively carry out several driving tasks, while the human driver monitors the driving environment and continues to carry out the rest of the driving tasks. become. At level 3, the automation system effectively performs several driving tasks and monitors the driving environment in some cases, while the human driver is prepared to regain control when the automation system requires it. I have to keep it. At level 4, the automation system can perform driving tasks and monitor the driving environment. Humans do not need to regain control, but automated systems can only operate under certain circumstances and conditions. At level 5, the automation system can perform all driving tasks under all conditions that a human driver can drive.

  At levels 4 and 5, humans no longer need to be involved in driving. Level 4 is automatic driving in a dedicated space or limited area, and level 5 is automatic driving without limiting the area. Level 1 has been widely put into practical use as of 2017, and level 2 has been partly put into practical use. At level 3, the automatic driving system leads driving, and human driving is requested as necessary.

  Levels 1-3 require an interface between the automated driving system and the driver in the vehicle. The main notification from the automatic driving system to the driver is to present the behavior of the vehicle determined by the automatic driving system to the driver. The driver can prepare for the next action of the vehicle based on the presented action. In level 3, the driver is required to notify the driver from the automatic driving system to switch from driving driven by the automatic driving system to driving driven by the driver.

  As of 2017, many vehicles are equipped with infotainment equipment such as car navigation and display audio, and the infotainment equipment includes a display and a speaker. A vehicle in which a plurality of infotainment devices are mounted in a vehicle compartment has also been developed (see, for example, Patent Document 1). Therefore, it is conceivable to use an infotainment device as a device for notifying the driver from the automatic driving system.

International Publication No. 2017/0668759

  Vehicles need to be manufactured in compliance with functional safety standards centered on the ISO 26262 standard. The ISO 26262 standard is an international standard for functional safety related to electricity / electronics of passenger cars of 3.5 tons or less. ASIL (Automotive Safety Integrity Level) defined by the ISO 26262 standard requires the highest level ASIL D for ADAS (Advanced Driving Assistant System). ASIL D requires an SPFM (Single Point Fault Metric) of 99% or more and an LFM (Latent Fault Metric) of 90% or more.

  Since a device for notifying a passenger such as a driver from an automatic driving system is a device that constitutes ADAS, ASIL of ISO 26262 standard is required. Most infotainment devices such as car navigation devices as of 2017 are not compliant with the AS26262 standard ASIL. Therefore, it is basically impossible to use an existing infotainment device mounted on the vehicle as a device for notifying the passenger from the automatic driving system. Further, in order to make an infotainment device to be manufactured in conformity with the ASIL of the ISO26262 standard, a significant increase in cost is required.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a technique for realizing an interface for notifying a passenger from an automatic driving system at low cost while complying with functional safety standards.

  In order to solve the above problems, a vehicle according to an aspect of the present invention includes a seat on which a driver can be seated, an electrically controllable power unit, an electrically controllable steering unit, and an electrical control. A brake unit, a first display unit disposed so that the driver can visually recognize, a second display unit disposed so that the driver can visually recognize, and a first control connected to the first display unit. A second control unit connected to the second display unit, and a power source unit having a secondary battery. The vehicle is capable of autonomous traveling by electrically controlling the power unit, the steering unit, and the braking unit, and the first display unit displays at least information related to the autonomous traveling. The second display unit can display at least a map and information related to the autonomous running, the first control unit operates with a real-time OS (Operating System), and the second control unit Operates with a non-real-time OS, the first display unit is connected to the power supply unit through at least two paths, and the second display unit is connected to the power supply section through one system path. Is done.

  It should be noted that any combination of the above-described constituent elements and a representation of the present invention converted between a method, an apparatus, a system, a computer program, etc. are also effective as an aspect of the present invention.

  ADVANTAGE OF THE INVENTION According to this invention, the interface notified to a passenger from an automatic driving system is realizable at low cost, complying with a functional safety standard.

It is a block diagram which shows the structure of the vehicle which concerns on embodiment of this invention. It is a figure which shows the structural example 1 of the 1st information presentation apparatus of FIG. 1, and a 2nd information presentation apparatus. It is a figure which shows the structural example 2 of the 1st information presentation apparatus of FIG. 1, and a 2nd information presentation apparatus. It is a figure for demonstrating the power supply path | route of the 1st information presentation apparatus of FIG. 1, and a 2nd information presentation apparatus. FIG. 5 is a diagram illustrating a configuration example of a power supply circuit in FIG. 4. It is a figure which shows the modification of a power supply circuit. FIGS. 7A and 7B are diagrams illustrating an arrangement example of the first information presentation device and the second information presentation device in the vehicle. It is a figure which shows the structural example 1 of an instrument panel. It is a figure which shows the structural example 2 of an instrument panel.

  FIG. 1 is a block diagram showing a configuration of a vehicle 1 according to an embodiment of the present invention. The vehicle 1 according to the embodiment is a vehicle having an automatic driving level 1 or higher, and a vehicle of level 3 is assumed in the following description. The vehicle 1 includes a power unit 41, a steering unit 42, a braking unit 43, a driving operation unit 30, an automatic driving controller 50, an imaging unit 61, a sensor unit 62, a wireless communication unit 63, a first information presentation device 10, and a second information presentation. The apparatus 20 includes an in-vehicle network 70 with a gateway function.

  The power unit 41 is a general term for members for accelerating the vehicle 1, and includes an engine and / or a traveling motor, a transmission, a power system ECU (Electronic Control Unit) 41a, and the like. The steering unit 42 is a general term for members for making the vehicle 1 curve, and includes a power steering, a steering system ECU 42a, and the like. The braking unit 43 is a general term for members for decelerating and stopping the vehicle 1, and includes a brake (hydraulic brake / regenerative brake / regenerative cooperative brake), an ABS (Antilock Brake System), a braking system ECU 43a, and the like.

  The power system ECU 41a, the steering system ECU 42a, and the braking system ECU 43a are each connected to the in-vehicle network 70. The in-vehicle network 70 is constructed using at least one of standards such as CAN (Controller Area Network), LIN (Local Interconnect Network), FlexRay (registered trademark), and Ethernet (registered trademark). The power system ECU 41a, the steering system ECU 42a, and the braking system ECU 43a are connected to the main network of the in-vehicle network 70. Hereinafter, in this embodiment, an example in which CAN is used for the main network is assumed.

  The driving operation unit 30 is a general term for members for the driver to operate the vehicle 1, and includes an accelerator pedal, a steering wheel, a brake pedal, a winker switch, an operation ECU 30a, and the like. The operation ECU 30a converts a driver's operation on an accelerator pedal or the like into an electric control signal, and transmits the electric control signal to the power system ECU 41a, the steering system ECU 42a, or the braking system ECU 43a via the in-vehicle network 70. The power system ECU 41a, the steering system ECU 42a, or the braking system ECU 43a controls the corresponding actuator based on the received control signal.

  The imaging unit 61 is a general term for at least one camera installed in the vehicle 1. For example, as the imaging unit 61, visible light cameras are installed at four locations on the front, rear, and left and right sides of the vehicle 1, and the front, rear, and left and right images of the vehicle 1 are photographed with the four visible light cameras. The imaging unit 61 outputs the generated image signal obtained by photoelectric conversion to the automatic operation controller 50.

  The sensor unit 62 is a general term for various sensors (excluding the imaging unit 61) for grasping the state of the host vehicle and the situation around the host vehicle. For example, the sensor unit 62 includes a LIDAR (Light Detection and Ranging), a millimeter wave radar, a vehicle speed sensor, and a GPS sensor.

  The LIDAR emits a light beam (for example, an infrared laser) around the vehicle 1 and receives the reflected signal. The distance from the surrounding object and the size of the object based on the received reflected signal. And measuring the composition of the object. The millimeter wave radar radiates a radio wave (millimeter wave) around the vehicle 1, receives the reflected signal, and measures the distance to an object existing in the surrounding based on the received reflected signal. The millimeter wave radar can also detect farther objects that are difficult to detect with LIDAR. The vehicle speed sensor detects the speed of the vehicle 1. The GPS sensor detects position information of the vehicle 1. Specifically, the transmission time is received from each of a plurality of GPS satellites, and the latitude and longitude of the reception point are calculated based on the received plurality of transmission times.

  The wireless communication unit 63 performs wireless communication with an external data center, a roadside device, another vehicle, and the like. For example, mobile phone network (cellular network), wireless LAN, ETC (Electronic Toll Collection System), DSRC (Dedicated Short Range Communications), V2I (Vehicle-to-Infrastructure), V2V (Vehicle-to-Vehicle) Can do.

  The automatic driving controller 50 holds data necessary for autonomous driving, such as a three-dimensional map, and causes the vehicle 1 to autonomously travel based on a predetermined automatic driving algorithm. Specifically, the automatic operation controller 50 is based on image data generated by the imaging unit 61, various detection data detected by the sensor unit 62, and various information collected from the outside via the wireless communication unit 63. Recognize the state of the car and the situation around the car.

  The automatic driving controller 50 determines the behavior of the vehicle 1 by applying various parameters indicating the recognized state of the own vehicle and the situation around the own vehicle to the automatic driving algorithm. The automatic operation controller 50 generates a control command based on the determined action, and transmits the control command to the power system ECU 41a, the steering system ECU 42a, or the braking system ECU 43a via the in-vehicle network 70. The power system ECU 41a, the steering system ECU 42a, or the braking system ECU 43a controls the corresponding actuator based on the received control command.

  The automatic driving algorithm is generated, for example, by artificial intelligence (AI) based on deep learning. Various parameters of the automatic driving algorithm are initially set to values learned in advance by a high-spec computer, and updated values are appropriately downloaded from a data center on the cloud.

  The second information presentation device 20 is an information presentation device for infotainment, and includes a second control unit 21, a second display unit 22, and a second speaker 23. The second control unit 21 is connected to the in-vehicle network 70 via the signal harness 72. The second information presentation device 20 corresponds to, for example, a car navigation device or a display audio device.

  The first information presentation device 10 is an information presentation device for automatic driving, and includes a first control unit 11, a first display unit 12, and a first speaker 13. The first control unit 11 is connected to the in-vehicle network 70 via the signal harness 72.

  The connection form of the in-vehicle network 70 shown in FIG. 1 is an example, and various connection forms can be used. For example, in FIG. 1, the second control unit 21 of the second information presentation device 20, the imaging unit 61, the sensor unit 62, and the wireless communication unit 63 are connected to the automatic operation controller 50 via the main network. The second control unit 21, the imaging unit 61, the sensor unit 62, and the wireless communication unit 63 may be directly connected.

  In FIG. 1, the first control unit 11 of the first information presentation device 10 and the automatic operation controller 50 are connected via the main network, but the second control unit 21 and the automatic operation controller 50 are dedicated signals. You may connect directly via a harness.

  The automatic operation controller 50, the operation ECU 30a, the power system ECU 41a, the steering system ECU 42a, the braking system ECU 43a, and the in-vehicle network 70 are generated in accordance with the AS26262 standard ASIL. Although not shown, an instrument panel including a speedometer, a tachometer, and the like is also generated in accordance with ASIL of the ISO26262 standard.

  The infotainment second information presentation device 20 does not need to comply with the AS26262 standard ASIL, and in fact, most infotainment devices do not comply with the ISO26262 standard ASIL.

  On the other hand, the first information presentation device 10 for automatic driving needs to comply with the AS26262 standard ASIL. In principle, the automatic operation controller 50 does not display information related to autonomous driving on the second display unit 22 of the second information presentation device 20. Also, the second speaker 23 of the second information presentation device 20 is not notified. The automatic operation controller 50 displays information related to autonomous traveling on the first display unit 12 of the first information presentation device 10. Alternatively, the notification is made from the first speaker 13 of the first information presentation device 10. Or do both.

  The information related to autonomous driving includes the behavior of the vehicle 1 determined by the automatic driving controller 50. The automatic operation controller 50 basically displays the current action (for example, acceleration, deceleration, right curve, left curve) of the vehicle 1 on the second display unit 22. Alternatively, the notification is made from the first speaker 13. Or do both. Moreover, the automatic driving controller 50 displays the next action of the vehicle 1 determined based on the automatic driving algorithm on the second display unit 22 from a predetermined time before the scheduled time for executing the action. Alternatively, the notification is made from the first speaker 13. Or do both.

  In the vehicle 1 at the automatic driving level 3, the automatic driving controller 50 may determine that autonomous driving is difficult. For example, it may be difficult to specify a lane on a road where no lane marking is drawn on the road surface, and autonomous driving may be difficult. In the case of heavy fog or heavy rain, it may be difficult to capture the front of the vehicle 1 clearly, making it difficult to run autonomously. When the automatic driving controller 50 determines that autonomous driving is in a difficult state, the automatic driving controller 50 displays on the first display unit 12 a message requesting switching from driving driven by the automatic driving controller 50 to driving driven by the driver. Let Alternatively, the notification is made from the first speaker 13. Or do both.

  FIG. 2 is a diagram illustrating a configuration example 1 of the first information presentation device 10 and the second information presentation device 20 in FIG. 1. The second control unit 21 of the second information presentation device 20 includes a CPU 211, an image processing engine 213, an audio DSP 214, a communication processing controller 215, and a power supply circuit 216. The second control unit 21 is constructed by, for example, a system LSI and SoC (System on a Chip).

  The CPU 211 operates by HLOS (High Level Operating System) and controls the entire second control unit 21 in an integrated manner. For example, AGL (Automotive Grade Linux (registered trademark)), Android (registered trademark) for in-vehicle OS, Windows in the car (registered trademark) can be used as the HLOS. These OSs are compatible with many APIs (Application Programming Interfaces) and have high versatility and expandability.

  The image processing engine 213 is a generic name for engines that perform specific image processing such as codec, moving image processing, and 3D graphic processing. A signal subjected to image processing by the image processing engine 213 is output to the second display unit 22. An audio DSP (Digital Signal Processor) 214 executes predetermined audio processing. The signal processed by the audio DSP 114 is output to the second speaker 23.

  The communication processing controller 215 executes communication processing of signals transmitted / received via the signal harness 72. For example, in the case of a CAN controller, messages specified in the CAN protocol are transmitted and received. The communication processing controller 215 operates with RTOS (Real-Time Operating System). For example, ITRON, FreeRTOS, VxWorks (registered trademark), RT-Linux (registered trademark), and Windows CE (registered trademark) can be used as the RTOS. The RTOS is an OS whose main purpose is to provide real-time processing with an emphasis on time resources. The RTOS has a task scheduling function according to priority, a real-time task control function regardless of the presence or absence of an interrupt, and a kernel processing time prediction function. An OS that does not have at least one of these functions is classified as a non-RTOS.

  The power supply circuit 216 steps down the power supply voltage (generally 12V) supplied from the power supply unit including the secondary battery, and supplies the power supply voltage (generally 3 to 5V) to the LSI included in the second control unit 21. ) Is generated. For example, a switching regulator can be used for the power supply circuit 216.

  The second display unit 22 includes a liquid crystal panel or an organic EL panel, and displays an image on the liquid crystal panel or the organic EL panel based on an image signal supplied from the image processing engine 213. The second speaker 23 for infotainment is often installed at a plurality of locations in the vehicle 1 for high sound quality. For example, it may be installed at a total of four locations on the left and right of the front side and the left and right of the rear side in the vehicle interior. As described above, in the second information presentation device 20 for infotainment, the second control unit 21 and the second speaker 23 are often physically separated, and in the separated type, the second control unit 21 and the second speaker 23 are separated. They are connected with a harness.

  When a DAC (Digital to Analog Converter) and an amplifier are built in the second control unit 21, a drive signal for driving the diaphragm of the second speaker 23 is supplied from the second control unit 21 to the second speaker 23. Is done. When the DAC and the amplifier are externally attached and installed on the second speaker 23 side, an audio signal is output from the second control unit 21 toward the DAC.

  The first control unit 11 of the first information presentation device 10 includes a main CPU 111, a sub CPU 112, an image processing engine 113, an audio DSP 114, a communication processing controller 115, and a power supply circuit 116. Similar to the second control unit 21, the first control unit 11 is also constructed by, for example, a system LSI and SoC.

  The main CPU 111 and the sub CPU 112 operate on the RTOS and control the entire first control unit 11 in an integrated manner. In the normal state, the main CPU 111 operates and the sub CPU 112 waits. When an abnormality occurs in the main CPU 111, the main CPU 111 stops and the sub CPU 112 operates. The image processing engine 113, the audio DSP 114, the communication processing controller 115, and the power supply circuit 116 have basically the same configuration as the second control unit 21.

  The 1st control part 11, the 1st display part 12, and the 1st speaker 13 of the 1st information presentation device 10 are integrally mounted in one case. Accordingly, the wiring between the first control unit 11 and the first display unit 12 and between the first control unit 11 and the first speaker 13 is shortened, and the wiring length between the first control unit 11 and the first speaker 13 is second. The wiring length between the control unit 21 and the second speaker 23 is shorter.

  The first information presentation device 10 is variously redundant in order to comply with the AS26262 standard ASIL. In the example shown in FIG. 2, two CPUs, a main CPU 111 and a sub CPU 112, are provided. The main CPU 111 and the sub CPU 112 are operated by RTOS instead of general-purpose HLOS. RTOS has narrowed down functions and the probability of crashing is lower than HLOS.

  Moreover, the 1st control part 11 and the vehicle-mounted network 70 are connected by the signal harness 72 (In FIG. 2, 2 systems of the 1st signal harness 72a and the 2nd signal harness 72b). Although not shown in FIG. 2, the first control unit 11 and the first display unit 12 may also be connected by at least two lines of wiring. The first display unit 12 is provided with a selector, and the selector switches to another wiring when an abnormality is detected in the wiring in use. Similarly, the first control unit 11 and the first speaker 13 may be connected by at least two lines of wiring.

  FIG. 3 is a diagram illustrating a configuration example 2 of the first information presentation device 10 and the second information presentation device 20 in FIG. 1. The configuration example 2 is an example in which the first control unit 11 and the automatic operation controller 50 are directly connected by a dedicated signal harness 73. Also in this case, the first control unit 11 and the automatic operation controller 50 are connected by at least two systems of signal harnesses 73 (in FIG. 3, two systems of the first signal harness 73a and the second signal harness 73b).

  FIG. 4 is a diagram for explaining the power supply paths of the first information presentation device 10 and the second information presentation device 20 of FIG. In FIG. 4, the signal harness is omitted for simplification. The vehicle 1 includes a first power supply unit E1 including a first secondary battery, a first fuse box FB1, and a second fuse box FB2. The first power supply unit E1 is a main power supply for supplying power to auxiliary equipment and accessory devices in the vehicle 1, and usually includes a 12V output lead battery as the first secondary battery.

  The first power supply unit E1 and the second fuse box FB2 are connected via the second switch SW2. The second fuse box FB2 branches a single power supply path from the first power supply unit E1 into a plurality of power supply paths. Accessory devices are connected to the tips of the plurality of branched power supply paths via first fuse f21 to nth fuse f2n, respectively. When a current of a predetermined value or more flows through the wiring forming the power supply path, the fuse is blown and the accessory device can be protected from overcurrent.

  The first power supply unit E1 and the first fuse box FB1 are connected via the first switch SW1. The first fuse box FB1 branches a single power supply path from the first power supply unit E1 into a plurality of power supply paths. Auxiliaries are connected to the tips of the branched power supply paths via first fuses f11 to nth fuses f1n, respectively. When a current of a predetermined value or more flows through the wiring that forms the power supply path, the fuse is blown and the auxiliary machine can be protected from overcurrent.

  The second switch SW2 is a switch that is linked to the on / off state of the accessory key, and the first switch SW1 is a switch that is linked to the on / off state of the ignition key. The second information presentation device 20 for infotainment is classified as an accessory device, and the first information presentation device 10 for automatic operation is classified as an auxiliary device.

  The second controller 21 of the second information presentation device 20 is connected to the second fuse box FB2 via the power harness H21. That is, the second control unit 21 is connected to the first power supply unit E1 via the power supply harness H21 and the first fuse f21 of the second fuse box FB2.

  The first control unit 11 of the first information presentation device 10 is connected to the first fuse box FB1 via the first power harness H11. That is, the first control unit 11 is connected to the first power supply unit E1 via the first power supply harness H11 and the first fuse f11 of the first fuse box FB1.

  The first information presentation device 10 has a redundant power supply path. In the example shown in FIG. 4, the first control unit 11 of the first information presentation device 10 is further connected to another auxiliary device 80 via the second power harness H12. The auxiliary machine 80 is connected to the first power supply unit E1 via the second fuse f12 of the first fuse box FB1. Accordingly, the first control unit 11 of the first information presentation device 10 establishes a power supply path that is connected to the first power supply unit E1 via the second power supply harness H12, the auxiliary device 80, and the second fuse f12 of the first fuse box FB1. Have. In addition, the 1st control part 11 may be connected with another auxiliary machine via a power supply harness, and may have another power supply path.

  In the example shown in FIG. 4, the second display unit 22 is configured to be directly connected to the second fuse box FB2 via the power harness H21, but the second fuse box FB2 via the second control unit 21. The structure connected to may be sufficient. Similarly, the first display unit 12 may be connected to the first fuse box FB1 through the first control unit 11.

  FIG. 5 is a diagram illustrating a configuration example of the power supply circuit 116 of FIG. The power supply circuit 116 includes a DC / DC converter 116a, a voltage detection unit 116b, and a third switch SW3. The DC / DC converter 116a is connected to the first power supply harness H21, steps down the power supply voltage Vb (generally 12V) supplied from the first power supply unit E1, and supplies it to the LSI included in the first control unit 11. A power supply voltage VDD (generally 3 to 5 V) is generated. For example, a switching regulator can be used for the DC / DC converter 116a.

  The second power harness H12 joins the first power harness H11 via the third switch SW3. The voltage detector 116b monitors the input voltage of the DC / DC converter 116a, and turns on the third switch SW3 when the input voltage falls below a predetermined threshold. As a result, even when the voltage of the first power supply harness H11 decreases due to disconnection or the like, it is possible to ensure the power supply to the DC / DC converter 116a by connecting the DC / DC converter 116a and the second power supply harness H12. it can.

  FIG. 6 is a diagram illustrating a modification of the power supply circuit 116. 4 and 5, the example in which the power supply path between the first power supply unit E1 and the first information presentation device 10 is multiplexed has been described. Instead of multiplexing, the first information presentation device 10 has the second secondary A configuration in which the second power supply unit E2 including a battery is mounted is also conceivable. The second power supply unit E2 is a backup power supply, and for example, a lithium ion battery or a nickel metal hydride battery can be used as the second secondary battery.

  The power supply circuit 116 includes a DC / DC converter 116a, a second power supply unit E2, a battery management unit 116c, and a third switch SW3. The DC / DC converter 116a is connected to the first power supply harness H11, steps down the power supply voltage Vb (generally 12V) supplied from the first power supply unit E1, and supplies it to the LSI included in the first control unit 11. A power supply voltage VDD (generally 3 to 5 V) is generated.

  The positive terminal of the second power supply unit E2 is connected to the first power supply harness H11 via the third switch SW3. The battery management unit 116c monitors the input voltage of the DC / DC converter 116a, and turns on the third switch SW3 when the input voltage falls below a predetermined threshold. Thereby, even when the voltage of the first power supply harness H11 decreases due to disconnection or the like, the DC / DC converter 116a and the second power supply unit E2 are electrically connected to supply power from the second power supply unit E2 to the DC / DC converter 116a. can do.

  The battery management unit 116c monitors the voltage of the second power supply unit E2, and when the voltage of the second power supply unit E2 falls below a predetermined value, the third switch SW3 is turned on to charge the second power supply unit E2. When the voltage of the second power supply unit E2 reaches a predetermined value, the third switch SW3 is turned off to end the charging of the second power supply unit E2. Note that the power supply path multiplexing shown in FIGS. 4 and 5 and the backup power supply installation shown in FIG. 6 may be used in combination.

  FIGS. 7A and 7B are diagrams illustrating an arrangement example of the first information presentation device 10 and the second information presentation device 20 in the vehicle 1. FIG. 7A is a schematic view of the vehicle 1 viewed from above, and FIG. 7B is a schematic view of the vicinity of the driver's seat in the vehicle 1. A vehicle 1 shown in FIGS. 7A and 7B is a four-seat specification vehicle, and a steering wheel 31 is installed on the right side. The driver sits on the right front driver's seat S1 and drives the vehicle 1. When the steering wheel 31 is installed on the left side, the driver sits on the left front seat and drives the vehicle 1.

  The second information presentation device 20 is installed at the center on the dashboard. The first information presentation device 10 is installed in the instrument panel or in the vicinity of the instrument panel. The system size of the first information presentation device 10 is smaller than the system size of the second information presentation device 20, and the shape / size of the first information presentation device 10 is designed to be smaller than the shape / size of the second information presentation device 20. The In particular, the shape / size of the first display unit 12 is designed to be smaller than the shape / size of the second display unit 22.

  The instrument panel is disposed to face the driver seat S1. Accordingly, the first information presentation device 10 is arranged closer to the driver seat S1 than the second information presentation device 20 is. The driver can view the first display unit 12 of the first information presentation device 10 with a slight line-of-sight movement from the normal line-of-sight position looking forward. In other words, the first display unit 12 can be visually recognized with a line-of-sight movement similar to the line-of-sight movement when viewing the speedometer or tachometer. In this regard, the movement of the line of sight becomes larger when the second display unit 22 of the second information presentation device 20 is viewed.

  FIG. 8 is a diagram showing a configuration example 1 of the instrument panel B1. The instrument panel B1 includes a tachometer M1 and a speedometer M2. In FIG. 8, other meters are omitted to simplify the drawing. The 1st information presentation apparatus 10 is installed in the back side of instrument panel B1, and the 1st display part 12 and the 1st speaker 13 are exposed to the surface. In FIG. 8, the first display unit 12 is disposed on the right side of the tachometer M1 and the speedometer M2, but may be disposed on the left side. Moreover, you may arrange | position between the tachometer M1 and the speedometer M2.

  For example, a pictographic image I1 indicating the behavior of the vehicle 1 is displayed on the first display unit 12. In the example shown in FIG. 8, a pictographic image I1 showing a right curve is displayed. For example, a voice message indicating the behavior of the vehicle 1 is notified from the first speaker 13. For example, a voice message “turn right” is notified.

  FIG. 9 is a diagram showing a configuration example 2 of the instrument panel B1. Configuration example 2 is an example in which the first display unit 12 is configured by a plurality of telltale lamps L1 to L8. In the configuration example 2, a liquid crystal panel or an organic EL panel is unnecessary, and LEDs corresponding to the number of telltale lamps L1 to L8 are used. The plurality of telltale lamps L1 to L8 are disposed between the tachometer M1 and the speedometer M2.

  In the example shown in FIG. 9, the first ramp L1 changes the left curve, the second ramp L2 accelerates, the third ramp L3 reduces, the fourth ramp L4 changes the right curve, and the fifth ramp L5 changes the left lane. The sixth lamp L6 is an overtaking lamp, the seventh lamp L7 is an emergency stop, and the eighth lamp L8 is a telltale lamp indicating a right lane change. In FIG. 9, in order to simplify the drawing, existing tell tale lamps such as a seat belt, a door open, and an air bag are omitted.

  Based on the behavior information of the vehicle 1 supplied from the automatic driving controller 50, the first control unit 11 causes a current to flow through a lamp indicating the corresponding behavior, and turns on the corresponding lamp. In the configuration example 2, it is not necessary to mount the image processing engine 113 in the first control unit 11, and a robust display system can be constructed at low cost. It is also possible to integrate an existing tell tale lamp controller and a new tell tale lamp controller related to autonomous driving.

  In the configuration example 1, the example in which the voice message is notified from the first speaker 13 has been described, but in the configuration example 2, the beep sound corresponding to the notification content may be notified from the first speaker 13. In this case, it is not necessary to mount the audio DSP 114 in the first control unit 11, and a robust voice system can be constructed at low cost.

  As described above, according to the present embodiment, an interface for notifying a passenger such as a driver from the automatic driving controller 50 can be realized at low cost while complying with the functional safety standard. Infotainment devices have a large-scale system due to content enrichment, and it is difficult to make the infotainment devices comply with functional safety standards. When attempting to make infotainment equipment compliant with functional safety standards, it is necessary to allow for significant cost increases.

  On the other hand, by providing the 1st information presentation device 10 for automatic driving which narrowed down the function from the 2nd information presentation device 20 for infotainment separately, it is for reporting to the passenger based on a functional safety standard. Equipment can be constructed at low cost.

  The present invention has been described based on the embodiments. The embodiments are exemplifications, and it will be understood by those skilled in the art that various modifications can be made to combinations of the respective constituent elements and processing processes, and such modifications are within the scope of the present invention. .

  In the above-described embodiment, the configuration in which the first information presentation apparatus 10 includes both the first display unit 12 and the first speaker 13 has been described, but a configuration including only one of the first display unit 12 and the first speaker 13 is also possible. In the example shown in FIGS. 8 and 9, the example in which the first information presentation device 10 is installed on the instrument panel B1 has been described. However, if the position is easy to see from the driver, it may be installed in a place other than the instrument panel B1. good. For example, you may install in the pad part of a steering wheel. Moreover, you may comprise the 1st display part 12 by HUD (Head Uo Display).

  The embodiment may be specified by the following items.

[Item 1]
A seat (S1) where the driver can sit;
An electrically controllable power unit (41);
An electrically controllable steering section (42);
An electrically controllable brake (43);
A first display unit (12) disposed so that the driver can visually recognize the vehicle;
A second display unit (22) disposed so that the driver can visually recognize the vehicle;
A first control unit (11) connected to the first display unit (12);
A second control unit (21) connected to the second display unit (22);
A power supply unit (E1) having a secondary battery,
A vehicle (1) capable of autonomous traveling by electrically controlling the power unit (41), the steering unit (42), and the braking unit (43),
The first display unit (12) can display at least information related to the autonomous running,
The second display unit (22) can display at least a map and information related to the autonomous running,
The first control unit (11) operates with a real-time OS (Operating System),
The second control unit (21) operates with a non-real-time OS,
The first display unit (12) is connected to the power source unit (E1) through at least two paths.
The second display unit (22) is connected to the power source unit (E1) through one system path.
Vehicle (1).
In item 1, by providing the first display unit (12) separately from the second display unit (22), the interface of the display system that notifies passengers such as drivers of information related to autonomous driving conforms to the functional safety standard However, it can be realized at a low cost. Further, by displaying rich content such as a map on the second display unit (22), the second display unit (22) not conforming to the functional safety standard and the first display unit (12) conforming to the standard safety are suitable. Can be used properly. In addition, by operating the first control unit (11) with a real-time OS, it is possible to reduce the probability that the first control unit (11) will fail. Moreover, the probability that the 1st display part (12) will fail can be reduced by making the power supply path | route of a 1st display part (12) redundant.
[Item 2]
The vehicle (1) according to item 1, wherein
The information related to the autonomous driving is information related to the behavior of the vehicle (1).
Vehicle (1).
The action of the vehicle (1) may include running, turning, and stopping.
In item 2, information indicating the behavior of the vehicle (1) can be displayed on the first display unit (12) compliant with the functional safety standard.
[Item 3]
The vehicle (1) according to item 1, wherein
The information related to the autonomous driving is information recommending the driver to switch to driving led by the driver.
Vehicle (1).
“Recommendation” is a concept including strongly recommending (that is, requesting).
In item 3, it is possible to display information recommending switching to driving led by the driver on the first display unit (12) compliant with the functional safety standard.
[Item 4]
The vehicle (1) according to any one of items 1 to 3,
Furthermore, the first speaker (13),
A second speaker (23),
The first speaker (13) can report information related to the autonomous running,
The second speaker (23) can report information related to the map.
Vehicle (1).
In item 4, by providing the first speaker (13) separately from the second speaker (23), an audio interface for notifying passengers such as a driver of information related to autonomous driving conforms to the functional safety standard. It can be realized at low cost.
[Item 5]
The vehicle (1) according to item 4, wherein
A first control unit (11) connected to the first speaker (12);
A second control unit (21) connected to the second speaker (22);
With
The first control unit (11) is connected to the power supply unit (E1) through at least two system paths,
The second control unit (21) is connected to the power supply unit (E1) through a single system path.
Vehicle (1).
The said 2 control part (21) may be connected with the said power supply part (E1) only by the path | route of one system | strain.
In item 5, by making the power supply path of the first control unit (11) redundant, the probability that the first control unit (11) and the first speaker (13) will fail can be reduced.
[Item 6]
The vehicle (1) according to any one of items 1 to 5, wherein
The first display unit (12) is disposed closer to the seat (S1) than the second display unit (22).
Vehicle (1).
In item 6, the first display unit (12) can be more easily seen by the driver than the second display unit (11).
[Item 7]
The vehicle (1) according to any one of items 1 to 6, wherein
At least one meter (M1, M2) disposed opposite the seat (S1);
The first display unit (12) is disposed adjacent to the at least one meter (M1, M2).
Vehicle (1).
“Neighboring” may mean existing in a region separated from the end of one meter on the same plane by the length of the diameter of one meter.
In item 7, the second display unit (22) can be easily seen from the driver by arranging the second display unit (22) in the vicinity of the meters (M1, M2).
[Item 8]
The vehicle (1) according to any one of items 1 to 7, wherein
And further comprising at least two meters (M1, M2) arranged facing the seat (S1),
The first display unit (12) is disposed between the two meters (M1, M2).
Vehicle (1).
In item 8, the first display unit (12) can be easily seen from the driver by disposing the first display unit (12) between the two meters (M1, M2).
[Item 9]
The vehicle (1) according to any one of items 1 to 8, wherein
The first display unit (12) has a first shape,
The second display part (22) has a second shape,
The first shape is smaller than the second shape,
Vehicle (1).
In item 9, the manufacturing cost of the first display section (12) can be reduced by making the first display section (12) smaller than the second display section (22).
[Item 10]
The vehicle (1) according to any one of items 1 to 9, wherein
Comprising at least one of an imaging unit (61), a sensor unit (62), and a communication unit (63);
Performing the autonomous running based on the signal from the at least one;
Vehicle (1).
In item 10, autonomous running is enabled by grasping the situation outside the vehicle (1).

  DESCRIPTION OF SYMBOLS 1 Vehicle, S1 Driver seat, 30 Driving operation part, 30a Operation ECU, 31 Steering wheel, 41 Power part, 41a Power system ECU, 42 Steering part, 42a Steering system ECU, 43 Braking part, 43a Braking system ECU, 50 Automatic Operation controller, 61 imaging unit, 62 sensor unit, 63 wireless communication unit, 70 in-vehicle network, 10 first information presentation device, 11 first control unit, 12 first display unit, 13 first speaker, 20 second information presentation device , 21 second control unit, 22 second display unit, 23 second speaker, 111 main CPU, 112 sub CPU, 113 image processing engine, 114 audio DSP, 115 communication processing controller, 116 power supply circuit, 211 CPU, 213 image processing engine 214 audio DSP, 215 communication processing controller, 216 power supply circuit, E1 first power supply unit, E2 second power supply unit, 72 signal harness, 72a first signal harness, 72b second signal harness, 73a first signal harness, 73b second Signal harness, H21 power harness, H11 first power harness, H12 second power harness, FB1 first fuse box, FB2 second fuse box, 80 auxiliary equipment, 116a DC / DC converter, 116b voltage detection unit, 116c battery management unit SW1 first switch, SW2 second switch, SW3 third switch, B1 instrument panel, M1 tachometer, M2 speedometer, I1 image.

Claims (10)

A seat on which the driver can sit;
An electrically controllable power unit;
An electrically controllable steering section;
An electrically controllable braking section;
A first display unit arranged to be visible to the driver;
A second display unit arranged to be visible to the driver;
A first control unit connected to the first display unit;
A second control unit connected to the second display unit;
A power supply unit having a secondary battery,
A vehicle capable of autonomous traveling by electrically controlling the power unit, the steering unit, and the braking unit,
The first display unit can display at least information related to the autonomous traveling,
The second display unit can display at least a map and information related to the autonomous running,
The first control unit operates with a real-time OS (Operating System),
The second control unit operates with a non-real-time OS,
The first display unit is connected to the power supply unit through at least two system paths,
The second display unit is connected to the power supply unit through one system path.
vehicle. The vehicle according to claim 1,
The information related to the autonomous driving is information related to the behavior of the vehicle.
vehicle. The vehicle according to claim 1,
The information related to the autonomous driving is information that recommends the driver to switch to driving led by the driver.
vehicle. The vehicle according to any one of claims 1 to 3,
A first speaker;
A second speaker,
The first speaker can report information related to the autonomous running,
The second speaker can report information related to the map.
vehicle. The vehicle according to claim 4,
A first control unit connected to the first speaker;
A second control unit connected to the second speaker,
The first control unit is connected to the power source unit through at least two system paths,
The second control unit is connected to the power supply unit through one system path.
vehicle. The vehicle according to any one of claims 1 to 5,
The first display unit is disposed closer to the seat than the second display unit,
vehicle. The vehicle according to any one of claims 1 to 6,
Further comprising at least one meter disposed opposite the seat;
The first display is disposed adjacent to the at least one meter;
vehicle. The vehicle according to any one of claims 1 to 7,
Further comprising at least two meters disposed opposite the seat;
The first display unit is disposed between the two meters.
vehicle. The vehicle according to any one of claims 1 to 8,
The first display unit has a first shape,
The second display unit has a second shape,
The first shape is smaller than the second shape,
vehicle. The vehicle according to any one of claims 1 to 9,
Including at least one of an imaging unit, a sensor unit, and a communication unit,
Performing the autonomous running based on the signal from the at least one;
vehicle.

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