JP2018018128A - Information providing method and information providing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information providing method and an information providing device, which can appropriately set a predetermined traveling characteristics mode for a driver.SOLUTION: An information providing method is to collect a plurality of pieces of probe information including traveling information of a vehicle and setting information for a predetermined traveling characteristics mode from a plurality of vehicles, and output information based on analysis results of the plurality of the pieces of probe information. The information providing method is also to identify a travel scene of the vehicle that tends to be set to the predetermined traveling characteristics mode, and output the output information that is based on the identified travel scene.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an information providing method and an information providing apparatus.

  2. Description of the Related Art Conventionally, a technique for detecting a traveling environment of a vehicle such as a road surface friction coefficient and changing the traveling characteristics of the vehicle based on the detected traveling environment of the vehicle is known (for example, Patent Document 1).

JP 2012-046147 A

  However, since the conventional technology is configured to change the travel characteristics of the vehicle based on the current travel environment of the vehicle, after the travel environment of the vehicle changes, the travel characteristics of the vehicle based on the travel environment of the vehicle after the change. There is a problem that the time for changing the running characteristics of the vehicle is delayed.

  The problem to be solved by the present invention is to provide an information providing method and an information providing apparatus that allow a driver to appropriately set a predetermined traveling characteristic mode.

  The present invention identifies a traveling scene of a vehicle that tends to set a predetermined traveling characteristic mode based on a plurality of probe information collected from a plurality of vehicles, and outputs output information based on the identified traveling scene of the vehicle. The above-mentioned problem is solved by outputting.

  According to the present invention, in the traveling scene of a vehicle in which the predetermined traveling characteristic mode tends to be set by outputting output information based on the traveling scene of the vehicle in which the predetermined traveling characteristic mode tends to be set. Thus, the driver can appropriately set the predetermined running characteristic mode.

It is a block diagram which shows the structure of the information provision system which concerns on this embodiment. It is a figure for demonstrating the determination method of the usage frequency of snow mode. It is a figure for demonstrating object probe information. It is a figure for demonstrating the probability model of driving | running | working information. It is a figure for demonstrating the method of calculating the probability model of driving | running | working information. It is a figure for demonstrating the exclusion method of the probe information containing an outlier. It is a figure for demonstrating the comparison method of the driving scene of a target vehicle, and the driving scene of the vehicle which tends to set snow mode. It is a flowchart which shows the probe information transmission process which concerns on this embodiment. It is a flowchart which shows the probe information analysis process which concerns on this embodiment. It is a flowchart which shows the information provision process which concerns on this embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram illustrating a configuration of an information providing system according to the present embodiment. As shown in FIG. 1, the information providing system according to the present embodiment includes a plurality of in-vehicle devices 100 mounted on a plurality of vehicles, and an information providing device 200 installed outside the vehicles. The plurality of in-vehicle devices 100 and the information providing device 200 can exchange various information via a communication line. Examples of the communication line include a mobile phone network, a wireless LAN network, a DSRC (Dedicated Short Range Communications) network, and a power line communication network. Moreover, it is good also as a structure which the vehicle-mounted apparatus 100 records various information on removable storage media, such as flash memory, and transmits / receives the recorded various information via the terminal (for example, smart phone) which has a communication function. In the example illustrated in FIG. 1, only one in-vehicle device 100 mounted on one vehicle is illustrated, but the information providing system can be configured to include a plurality of in-vehicle devices 100.

  As shown in FIG. 1, the in-vehicle device 100 includes a sensor group 110, an operation device group 120, an in-vehicle communication device 130, an in-vehicle control device 140, and a presentation device 150. These devices are connected by a CAN (Controller Area Network) or other in-vehicle LAN in order to exchange information with each other.

  The sensor group 110 includes at least a GPS device that detects the position of the host vehicle. The GPS device detects radio waves transmitted from a plurality of satellite communications, periodically acquires the position information of the own vehicle, and acquires the acquired position information of the own vehicle, the angle change information acquired from the gyro sensor, The current position of the host vehicle is detected based on the vehicle speed acquired from the vehicle speed sensor. The GPS device also acquires current time information. In addition, the sensor group 110 includes a vehicle speed sensor that detects the vehicle speed of the vehicle, a steering angle sensor that detects the steering angle of the steering, an accelerator opening sensor that detects the accelerator opening, and a brake opening that detects the brake opening. Sensors can be included.

  The operating device group 120 is an operating member that can be operated by the driver, and includes at least a snow mode switch for setting the traveling characteristic mode of the vehicle to the snow mode. The driver can switch between the normal mode and the snow mode by operating the snow mode switch. The snow mode is a driving characteristic mode that performs driving control corresponding to driving on a road where the friction coefficient of the road surface including snowy roads and frozen roads is a predetermined value or less, and the gear ratio is higher than the normal mode. The travel control is performed so that the driving force of the vehicle becomes small. The operation information of the operation device group 120 operated by the driver is transmitted to the in-vehicle control device 140.

  The in-vehicle communication device 130 can communicate with the server communication device 210 of the information providing device 200 via a telephone line network or the like. The in-vehicle communication device 130 transmits information acquired from the in-vehicle control device 140 to the information providing device 200, receives information from the information providing device 200, and outputs the received information to the in-vehicle control device 140.

  The presentation device 150 is a device such as a display or a speaker, and can display the information provided from the information providing device 200 on the screen of the display or output the sound from the speaker to present it to the driver.

  The in-vehicle control device 140 includes a ROM (Read Only Memory) storing a program for presenting information for guiding the setting of the snow mode (hereinafter referred to as snow mode guidance information) to the driver, and a program stored in the ROM. And a RAM (Random Access Memory) functioning as an accessible storage device. As an operation circuit, instead of or in addition to a CPU (Central Processing Unit), an MPU (Micro Processing Unit), a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), etc. Can be used.

  The in-vehicle control device 140 executes a program stored in the ROM by the CPU, thereby obtaining a probe information obtaining function for obtaining probe information, a probe information sending function for sending the obtained probe information to the information providing device 200, and information. An information presentation function for presenting the snow mode guidance information received from the providing device 200 to the driver. Below, each function with which the vehicle-mounted control apparatus 140 is provided is demonstrated.

  The probe information acquisition function of the in-vehicle control device 140 acquires the detection result of each sensor from the sensor group 110 as probe information. For example, the probe information acquisition function can acquire the position information and current time information of the host vehicle from the GPS device, and the vehicle speed information from the vehicle speed sensor as probe information. Furthermore, the probe information acquisition function acquires the steering angle information (steering operation amount information) from the steering angle sensor, the brake opening information from the brake opening sensor, and the accelerator opening information from the accelerator opening sensor, Average value of steering angle during a certain period (hereinafter referred to as average steering angle), average value of brake opening during a certain period (hereinafter referred to as average braking opening), and average value of accelerator opening during a certain period (hereinafter referred to as average steering angle) , Referred to as average accelerator opening) can be acquired as probe information.

  The probe information acquisition function acquires operation information of each operation device from the operation device group 120 as probe information. For example, the probe information acquisition function acquires the use status of the snow mode from the snow mode switch as probe information. The probe information acquisition function temporarily accumulates the probe information acquired from the sensor group 110 and the operation device group 120 in the RAM of the in-vehicle control device 140.

  The probe information transmission function of the in-vehicle control device 140 is acquired by the probe information acquisition function, and the probe information temporarily stored in the RAM of the in-vehicle control device 140 is transferred to the information providing device 200 via the in-vehicle communication device 130. Send. For example, in the present embodiment, the probe information transmission function is information on the probe information stored in the RAM of the in-vehicle control device 140 when the ignition is turned off or the ignition is turned on, every predetermined time, or whenever the vehicle travels a certain distance. It can be transmitted to the providing device 200. In the present embodiment, the probe information is described as being transmitted to the information providing apparatus 200 at regular time intervals. Furthermore, in this embodiment, the vehicle type information of the vehicle on which the in-vehicle device 100 is mounted and the vehicle ID information are stored in advance in the RAM of the in-vehicle control device 140, and the probe information transmission function performs the vehicle type information of the vehicle and the vehicle ID. Information can be acquired from the RAM of the in-vehicle control device 140 and transmitted to the information providing device 200 as probe information.

  The information presentation function of the in-vehicle control device 140 receives snow mode guidance information (details will be described later) from the information providing device 200 via the in-vehicle communication device 130, and receives the received snow mode guidance information via the presentation device 150. Present it to the driver. Although details will be described later, the snow mode guidance information is used to guide the driver to set the snow mode when the traveling scene of the vehicle corresponds to a traveling scene of the vehicle in which the snow mode tends to be set. Information. By presenting such snow mode guidance information to the driver, it is possible to appropriately set the snow mode according to the snow mode guidance information even for a driver who has relatively little experience in using the snow mode.

  Next, the information providing apparatus 200 according to the present embodiment will be described. The information providing apparatus 200 is a server installed outside the vehicle, and includes a server communication apparatus 210, a server processing apparatus 220, and a database 230 as shown in FIG.

  The server communication device 210 can communicate with the in-vehicle communication device 130 of the in-vehicle device 100 through a telephone line network or the like. The server communication device 210 receives a plurality of probe information from a plurality of in-vehicle devices 100 respectively mounted on a plurality of vehicles, outputs the received plurality of probe information to the server processing device 220, and acquires from the server processing device 220. The snow mode guidance information is transmitted to the in-vehicle device 100.

  The database 230 stores a plurality of probe information acquired from a plurality of vehicles. Such probe information includes the vehicle position, date and time, outside air temperature, average steering angle, average accelerator opening, average brake opening, vehicle type, and snow mode usage status when the probe information is acquired. Information is included. The database 230 also stores map information and road information. The road information includes information on the type of each road (general road, exclusive road, bridge, tunnel, etc.). Further, the database 230 also stores information such as weather, precipitation, temperature, and humidity for each place and date.

  The server processing device 220 includes a ROM that stores a program for providing the in-vehicle device 100 with snow mode guidance information, a CPU that executes the program stored in the ROM, and a RAM that functions as an accessible storage device. Composed. The server processing device 220 tends to set the probe information storage function for storing the probe information transmitted from the in-vehicle device 100 in the database 230 and the snow mode by executing the program stored in the ROM by the CPU. A probe information analysis function for identifying a traveling scene of the vehicle, and an information providing function for providing snow mode guidance information to the in-vehicle device 100 of the target vehicle based on the traveling scene of the target vehicle on which the in-vehicle device 100 is mounted. . Below, each function with which the server processing apparatus 220 is provided is demonstrated.

  The probe information storage function of the server processing device 220 stores the probe information received from the in-vehicle device 100 in the database 230. The probe information storage function refers to the database 230, identifies the region where the vehicle was traveling when the probe information was acquired from the vehicle position information included in the probe information, and probed the identified region It can be included in the information and stored in the database 230. For example, the probe information storage function can identify an area divided by 100 meters square, an area in units of municipalities, etc. where the vehicle was traveling as an area where the vehicle was traveling. Furthermore, the probe information storage function refers to the database 230, specifies the weather, precipitation amount, outside temperature, humidity, and the like when the probe information is acquired from the vehicle position and time information included in the probe information, Information on the identified weather, precipitation, outside temperature, and humidity can be included in the probe information and stored in the database 230. In addition, the probe information storage function refers to the database 230, and the type of road on which the vehicle travels when the probe information is acquired from the position of the vehicle included in the probe information (for example, a general road, a car road, a bridge, Alternatively, a tunnel or the like can be specified, and the specified road type can be included in the probe information and stored in the database 230.

  The probe information analysis function of the server processing device 220 identifies a traveling scene of a vehicle that tends to set the snow mode based on a plurality of pieces of probe information collected from the plurality of in-vehicle devices 100. The probe information analysis function first acquires a plurality of probe information accumulated in the database 230. The probe information analysis function calculates the use frequency of the snow mode for each vehicle based on the vehicle ID and the operation information of the snow mode switch included in the probe information. For example, the probe information analysis function counts the number of times the snow mode switch is set to ON within a predetermined period, based on the usage status of the snow mode included in the probe information obtained continuously in time. The frequency of use of the snow mode can be calculated. Then, the probe information analysis function extracts probe information collected from a vehicle having a snow mode usage frequency equal to or higher than a predetermined value from the plurality of probe information stored in the database 230.

  Here, FIG. 2 is a diagram for explaining a method of determining the usage frequency of the snow mode. In the graphs shown in FIGS. 2A and 2B, the vertical axis represents the number of times that the driver operated the snow mode switch and set the snow mode to ON in a certain period, and the horizontal axis represents time. ing.

  For example, in the graph shown in FIG. 2A, since the number of times the snow mode is set to ON for a certain period is equal to or greater than a predetermined threshold, the probe information analysis function indicates that the vehicle is used in the snow mode usage frequency. Can be determined to be a vehicle having a predetermined value or more. On the other hand, in the graph shown in FIG. 2B, since the number of times the snow mode is set to ON for a certain period is less than a predetermined threshold, the probe information analysis function indicates that the vehicle is used in a predetermined frequency of the snow mode. It can be determined that the vehicle is less than the value. Thereby, the probe information analysis function can extract probe information collected from a vehicle whose snow mode usage frequency is a predetermined value or more from a plurality of probe information. Note that the threshold value may be a constant value, or may be a variable value depending on the vehicle type, vehicle position, weather, road type, and the like.

  Furthermore, the probe information analysis function extracts probe information acquired at the timing when the snow mode is set to ON from a plurality of pieces of probe information collected from vehicles having a snow mode usage frequency equal to or higher than a predetermined value. To do. For example, the probe information analysis function is acquired at the timing when the snow mode is turned on by specifying the timing when the snow mode is turned on based on the probe information obtained continuously in time. Probe information can be extracted. Thereby, as shown in FIG. 3, the probe information analysis function is a plurality of pieces of probe information collected from a vehicle whose use frequency in the snow mode is equal to or higher than a predetermined value, and at the timing when the snow mode is set to ON. The acquired probe information can be acquired as target probe information. FIG. 3 is a diagram for explaining the target probe information.

  Then, the probe information analysis function classifies the extracted plurality of target probe information into a plurality of groups. Here, as shown in FIG. 4, in addition to position information and time information, the target probe information includes vehicle type, region, day of the week, time zone, weather, road type, outside temperature, humidity, vehicle speed, average accelerator opening. Travel information such as degree, average brake opening, and average steering angle is included. In the present embodiment, the probe information analysis function includes travel information indicated by (A) in FIG. 4, that is, for each vehicle type, for each region, for each day of the week and / or for a time zone, for each weather (presence of rainfall), and Target probe information is grouped for each type of road.

  For example, the probe information analysis function can group a plurality of pieces of target probe information for each region by grouping a plurality of pieces of target probe information into regions divided by 100 meters square or regions in units of municipalities. it can. In addition, the probe information analysis function groups multiple target probe information by time zone by classifying multiple target probe information according to the time zone (for example, morning, noon, night) when the target probe information was obtained. can do. Furthermore, the probe information analysis function classifies a plurality of target probe information according to the weather (for example, rain or sunny (no rain)) from which the target probe information was obtained, and groups the target probe information for each weather. Can be In addition, the probe information analysis function classifies a plurality of target probe information by classifying the types of roads (for example, general roads, automobile roads, bridges, tunnels) from which the target probe information is obtained. Can be grouped by road type. In the present embodiment, the probe information analysis function combines the target probe information by combining all the travel information of the vehicle type, region, day of the week and / or time zone, weather (presence of rain), and road type. To do.

  Thereby, for example, as shown in FIG. 4, the probe information analysis function is acquired in a driving scene A1 in which the vehicle type is T1, the region is R1, the time zone is daytime, the weather is clear (no rain), and the road type is a general road. The obtained target probe information can be collected in the same group G1. Similarly, the probe information analysis function groups target probe information in different combinations of travel information, thereby grouping target probe information corresponding to different travel scenes A2, A3,. G2, G3,... Gn can be summarized.

  Note that the probe information analysis function can determine that there is no tendency for the snow mode to be set for a traveling scene of a vehicle with a small proportion of target probe information acquired. For example, the probe information analysis function is not limited to the target probe information, and when all the probe information acquired from a plurality of vehicles is grouped, the ratio of the target probe information to the entire probe information in the same group Is less than the predetermined value, it can be determined that the snow mode does not tend to be set in the driving scene corresponding to this group, and the subsequent processing can be omitted. For example, of the probe information obtained in the travel scene where the vehicle type is T1, the region is R1, the time zone is daytime, the weather is clear (no rain), and the road type is a general road, the target probe obtained in this travel scene When the information ratio is less than the predetermined value, it can be determined that the snow mode does not tend to be set in this traveling scene.

  And a probe information analysis function specifies the running scene of the vehicle which tends to set snow mode for every group based on the grouped several target probe information. Specifically, as shown in FIG. 4, the probe information analysis function performs various types in the traveling scene of the vehicle based on a plurality of target probe information grouped (obtained in the traveling scene of the same vehicle). The average value and standard deviation of the travel information (for example, travel information of (B) shown in FIG. 4 such as the outside air temperature, humidity, vehicle speed, average accelerator opening, average brake opening, and average steering angle, etc.) It is calculated as a probability model for each piece of driving information in the driving scene. For example, in the example shown in FIG. 4, the target probe information in the traveling scene A1 in which the vehicle type is T1, the region is R1, the time zone is daytime, the weather is sunny (no rain), and the road type is a general road is grouped as a group G1. In this case, the probe information analysis function performs the average value of each of the outside air temperature, humidity, vehicle speed, average accelerator opening, average brake opening, and average steering angle included in the target probe information of group G1 and the standard deviation thereof. Can be calculated as a probability model of each piece of driving information in the driving scene A1.

  Here, FIG. 5 is a diagram for explaining a probability model of each piece of traveling information. Below, with reference to FIG. 5, the probability model of each driving | running | working information is demonstrated. In the example shown in FIG. 5, a description will be given of a probability model of the outside air temperature and the average accelerator opening among the pieces of traveling information included in the target probe information classified into the group G1 shown in FIG. 4 (FIG. 6). The same applies to FIG. 7).

  For example, in the example shown in FIG. 5, the probe information analysis function calculates the average value Oave and standard deviation Oσ of the outside temperature of the target probe information belonging to the group G1 as a probability model of the outside temperature in the traveling scene A1 of the vehicle. . Similarly, as shown in FIG. 5, the probe information analysis function calculates the average accelerator opening ACave and standard deviation ACσ of the target accelerator information belonging to the group G1 as the average accelerator opening in the vehicle travel scene A1. Calculate as a probabilistic model. Similarly, the probe information analysis function calculates the average value and the standard deviation for the humidity, the vehicle speed, the average brake opening, and the average steering angle, so that the humidity, the vehicle speed, and the average brake in the travel scene A1 of the vehicle are calculated. A probability model of the opening degree and the average steering angle can be calculated.

  The probe information analysis function excludes such target probe information if any of the traveling information included in the target probe information is an outlier when calculating a probability model of various types of travel information. Thus, a probability model of each traveling information can be calculated. Here, FIG. 6 is a diagram for explaining a method of excluding target probe information including outliers. For example, as shown in FIG. 6, the probe information analysis function first specifies a range (Oave ± 3Oσ) within three times the standard deviation Oσ of the outside air temperature from the average outside air temperature Oave as the outside air temperature reference range. Similarly, a range (ACave ± 3ACσ) that is within three times the standard deviation ACσ of the average accelerator opening from the average value ACave of the average accelerator opening is specified as the reference range of the average accelerator opening. The probe information analysis function determines that the target probe information includes an outlier when the value of any travel information included in the target probe information is outside the reference range, and determines the target probe information. Exclude from the calculation target of the probability model. For example, in the example shown in FIG. 6, the outside air temperature O1 and average accelerator opening degree AC1 included in the target probe information p1 and the outside air temperature O2 and average accelerator opening degree AC2 included in the target probe information p2 are within the reference ranges, respectively. It is outside. Therefore, the probe information analysis function determines that the target probe information p1 and p2 include outliers, and excludes the target probe information p1 and p2 from the calculation target of the probability model. In the above-described example, the configuration in which the outlier is determined using the standard deviation is illustrated. However, the configuration is not limited to this configuration, and a known method can be used as the outlier detection method.

  And a probe information analysis function specifies the traveling scene of the vehicle which tends to set snow mode in the traveling scene of each vehicle based on the probability model of each traveling information in the traveling scene of each vehicle. For example, in the example shown in FIG. 5, a plurality of target probe information is plotted as the target probe information in the traveling scene A1 of the vehicle. In this case, the probe information analysis function has a range (Oave ± Oσ) in which the outside air temperature is within the standard deviation Oσ of the outside air temperature from the average outside air value Oave, and the average accelerator opening is an average of the average accelerator opening. Driving scenes A1 of a vehicle in which the snow mode tends to be set among the driving scenes A1 of the vehicle within a range (ACave ± ACσ) in which the value is within the standard deviation ACσ of the average accelerator opening from ACave. It can be specified as '(A1⊃A1').

  As described above, the probe information analysis function specifies the target probe information by the vehicle travel scene (for example, vehicle type, region, day of the week and / or time zone, weather (presence of rain), and road type). Grouped for each driving scene) and calculated the average value and standard deviation of each driving information (for example, outside air temperature, humidity, vehicle speed, average accelerator opening, average brake opening, and average steering angle) for each vehicle driving scene. Thus, a probability model of each traveling information in the traveling scene of each vehicle is calculated. The probe information analysis function stores a probability model of each travel information in each vehicle travel scene in the database 230 as an index indicating a vehicle travel scene that tends to be set in the snow mode. As described above, the probe information analysis function calculates the probability model of each travel information in the travel scene of each vehicle as an index indicating the travel scene of the vehicle in which the snow mode tends to be set in the travel scene of each vehicle. Thus, it is possible to specify a traveling scene of the vehicle in which the snow mode tends to be set. Further, the probe information analysis function repeatedly calculates a probability model of each traveling information in the traveling scene of each vehicle based on the latest target probe information for every predetermined period, thereby driving each vehicle stored in the database 230. It is possible to update the probability model of each piece of travel information in the scene.

  The information providing function of the server processing device 220 outputs output information to the in-vehicle device 100 based on the traveling scene of the vehicle in which the snow mode tends to be set. Specifically, the information providing function acquires probe information of the target vehicle from the in-vehicle device 100 of the target vehicle, and based on the acquired probe information of the target vehicle, the travel scene of the target vehicle (for example, the vehicle type of the target vehicle) , The driving scene of the target vehicle specified by the region, day of the week, time zone, weather, and road type). The information providing function compares the travel scene of the target vehicle with the travel scene of the vehicle that tends to be set in the snow mode, and the travel scene of the target vehicle is the vehicle that tends to be set in the snow mode. When it corresponds to the traveling scene, the snow mode guidance information for guiding the setting of the snow mode is transmitted to the in-vehicle device 100 of the target vehicle as output information based on the traveling scene of the vehicle in which the snow mode tends to be set. .

  Specifically, the information providing function first refers to the database 230, and from the probability model of each travel information in the travel scene of each vehicle calculated by the probe information analysis function, is the same as the travel scene of the target vehicle. A probability model of each traveling information in the traveling scene (the same vehicle type, region, day and / or time zone, weather, and road type as the target vehicle) is acquired. As described above, in the database 230, the outside temperature, humidity, vehicle speed, average accelerator opening, average brake opening, and average value and standard deviation of the average steering angle in the driving scene of each vehicle are stored in the driving scene of each vehicle. Is stored as a probability model of each travel information. Therefore, as shown in FIG. 4, the traveling scene of the target vehicle is a traveling scene A1 in which the vehicle type is T1, the region is R1, the time zone is daytime, the weather is clear (no rain), and the road type is a general road. In the information provision function, the outside temperature, humidity, vehicle speed, average accelerator open in the driving scene A1 in which the vehicle type is T1, the region is R1, the time zone is daytime, the weather is fine (no rain), and the road type is a general road. A probability model of degree, average brake opening, and average steering angle is acquired from the database 230.

  The information providing function is based on the probability model of each travel information in the same travel scene as the travel scene of the target vehicle acquired from the database 230, and the travel scene of the target vehicle tends to be set to the snow mode. It is judged whether it corresponds to the following driving scene. In the present embodiment, the information providing function is for running the target vehicle in which the outside temperature, humidity, vehicle speed, average accelerator opening, average brake opening, and average steering angle in the driving scene of the target vehicle are acquired from the database 230. When the outside temperature, humidity, vehicle speed, average accelerator opening, average brake opening, and average steering angle within the standard driving range are within the standard deviation range, It is determined that it corresponds to a traveling scene of a vehicle in which the mode tends to be set. Specifically, the information providing function calculates a distance between each travel information in the travel scene of the target vehicle and an average value of each travel information in the same travel scene as the target vehicle for each travel information. Thus, it is possible to determine whether each piece of traveling information in the traveling scene of the target vehicle is within a standard deviation from the average value of various traveling information in the same traveling scene as the traveling scene of the target vehicle. .

  Here, FIG. 7 is a diagram for explaining a comparison method between the traveling scene of the target vehicle and the traveling scene of the vehicle in which the snow mode tends to be set. For example, in the example shown in FIG. 7, it is assumed that the travel scene of the target vehicle is the travel scene A1 shown in FIG. 4, and the probe information p3 and p4 acquired from the target vehicle belong to the group G1 shown in FIG. In this case, the information providing function is such that the outside air temperature, humidity, vehicle speed, average accelerator opening, average brake opening, and average steering angle in the probe information p3, p4 of the target vehicle are acquired from the database 230, respectively. It is determined whether the ambient temperature, humidity, vehicle speed, average accelerator opening, average brake opening, and average steering angle in the scene A1 are within the standard deviation range.

  For example, for the probe information p3 of the target vehicle shown in FIG. 7, the information providing function includes the outside temperature O3 in the travel scene of the target vehicle, the average outside value Oave of the same travel scene A1 as the target vehicle, and the target vehicle The distance l3 is calculated from the average accelerator opening AC3 in the travel scene and the average value ACave of the average accelerator opening in the same travel scene A1 as the target vehicle. Similarly, the information providing function is also applicable to the humidity, vehicle speed, average brake opening, and average steering angle in the driving scene of the target vehicle. Calculate the distance to the average value of the corners. In the information providing function, the distance 13 is within a range based on the standard deviation Oσ of the outside air temperature and the standard deviation ACσ of the average accelerator opening, and further, the humidity, the vehicle speed, the average brake opening, and the average steering angle When the distance is within the range of the standard deviation from the average value of the travel information, it is determined that the travel scene of the target vehicle corresponds to the travel scene of the vehicle that tends to set the snow mode.

  On the other hand, regarding the probe information p4 of the target vehicle, the information providing function similarly applies to the target vehicle regarding the outside air temperature, humidity, vehicle speed, average accelerator opening, average brake opening, and average steering angle in the travel scene of the target vehicle. The distance from the outside air temperature, humidity, vehicle speed, average accelerator opening, average brake opening, and average steering angle of the same traveling scene A1 is calculated. As shown in FIG. 7, with respect to the probe information p4 of the target vehicle, the outside temperature O4 and the average outside temperature Oave in the travel scene of the target vehicle, and the average accelerator opening AC4 and the average accelerator opening in the travel scene of the target vehicle The distance l4 of the average value ACave is out of the standard deviation range. Therefore, the information providing function can determine that the traveling scene of the target vehicle does not correspond to the traveling scene of the vehicle in which the snow mode tends to be set.

  Thus, the traveling scene of the target vehicle and the traveling scene of the vehicle in which the snow mode tends to be set do not need to completely match, for example, the outside air temperature included in the target probe information of the target vehicle, Humidity, vehicle speed, average accelerator opening, average brake opening, average steering angle, etc., outside temperature, humidity, vehicle speed, average accelerator opening, average brake opening, average steering tend to be set for snow mode, respectively When the angle is within a certain range (for example, standard deviation) from the corner, it is determined that the traveling scene of the target vehicle is “corresponding” to the traveling scene of the vehicle in which the snow mode tends to be set. The fixed range is not limited to the range of the standard deviation σ, and may be a range 2σ that is twice the standard deviation σ, for example.

  The information providing function transmits the snow mode guidance information to the in-vehicle device 100 of the target vehicle when it is determined that the travel scene of the target vehicle corresponds to a travel scene of a vehicle that tends to be set in the snow mode. . The information providing function does not transmit the snow mode guidance information to the in-vehicle device 100 of the target vehicle when the target vehicle has already set the snow mode on based on the probe information of the target vehicle. can do. Further, the information providing function calculates the use frequency of the snow mode in the target vehicle based on the probe information of the target vehicle, and if the use frequency of the snow mode in the target vehicle is equal to or greater than a predetermined value, the snow mode guidance information May not be transmitted to the in-vehicle device 100 of the target vehicle.

  Furthermore, in the above-described embodiment, the driving scene of the target vehicle is compared with the area where the target vehicle travels and the area where the snow mode tends to be set. Although the structure which judges whether it corresponds to was illustrated, it is not limited to this structure, It can also be set as the following structures. In other words, it is possible to exclude the area where the target vehicle travels and determine whether the travel scene of the target vehicle corresponds to a travel scene in which the snow mode tends to be set. Thereby, it is possible to determine for each region whether or not the traveling scene of the target vehicle corresponds to the traveling scene of the vehicle in which the snow mode tends to be set, and the snow mode is set in the traveling scene of the target vehicle. Can identify areas that tend to As a result, the snow mode guidance information can be transmitted to the in-vehicle device 100 of the target vehicle before the target vehicle reaches an area where the snow mode tends to be set.

  Then, with reference to FIGS. 8-10, operation | movement of the information provision system which concerns on this embodiment is demonstrated. 8 is a flowchart showing probe information transmission processing according to the present embodiment, FIG. 9 is a flowchart showing probe information analysis processing according to the present embodiment, and FIG. 10 is information according to the present embodiment. It is a flowchart which shows a provision process.

  First, with reference to FIG. 8, a probe information transmission process for transmitting vehicle probe information from the in-vehicle device 100 to the information providing device 200 will be described. The probe information transmission process shown in FIG. 8 is executed by the in-vehicle device 100 mounted on each vehicle.

  First, in step S101, the probe information acquisition function of the in-vehicle control device 140 determines whether or not the ignition is turned on. While the ignition is off, the process waits in step S101, and when the ignition is on, the process proceeds to step S102.

  In step S102, probe information is acquired by the probe information acquisition function of the in-vehicle control device 140. The probe information acquisition function can acquire the detection result of each sensor from the sensor group 110 and the operation information of each operation device from the operation device group 120 as probe information. In step S103, the probe information acquired in step S102 is temporarily stored in the RAM of the in-vehicle control device 140 by the probe information acquisition function of the in-vehicle control device 140.

  In step S104, the probe information transmission function of the in-vehicle controller 140 determines whether or not a certain period has elapsed since the last time probe information was transmitted. When the fixed period has elapsed, the process proceeds to step S105, and the probe information accumulated in step S103 is transmitted from the in-vehicle device 100 to the information providing device 200 by the probe information transmission function of the in-vehicle control device 140. On the other hand, if the certain period has not elapsed, the process returns to step S102, and acquisition and accumulation of probe information are repeated.

  In step S106, the probe information transmission function of the in-vehicle control device 140 determines whether or not the ignition is turned off. If the ignition is on, the process returns to step S102, and probe information acquisition and temporary storage are repeated. Then, when the ignition is turned off, the probe information transmission process shown in FIG. 8 is terminated by the probe information transmission function.

  Next, with reference to FIG. 9, probe information analysis processing for analyzing the probe information received from the in-vehicle device 100 in the information providing device 200 will be described. The probe information analysis process shown in FIG. 9 is repeatedly performed at regular time intervals by the server processing apparatus 220 of the information providing apparatus 200.

  In step S201, the probe information storage function of the server processing device 220 receives a plurality of probe information transmitted from the plurality of in-vehicle devices 100, and stores the received probe information in the database 230. In addition, the probe information storage function includes the weather, precipitation amount, outside temperature and humidity, and road type (for example, general roads, roads dedicated to automobiles) when the probe information is acquired from the vehicle position and time information included in the probe information. , A bridge, a tunnel, etc.) are specified, and the specified weather, precipitation, outside air temperature, humidity, and road type information are included in the probe information and stored in the database 230. Note that the process of step S201 is sequentially executed every time probe information is transmitted from the in-vehicle device 100.

  In step S202, the probe information analysis function determines whether or not a certain period has elapsed since the start of probe information accumulation. Until the predetermined period elapses, the accumulation of probe information in step S201 is repeated. When the predetermined period elapses, the process proceeds to step S203.

  In step S203, processing for extracting the target probe information from the database 230 is performed by the probe information analysis function. Specifically, the probe information analysis function extracts from the database 230 probe information collected from a vehicle whose snow mode usage frequency is equal to or higher than a predetermined value, that is, probe information of a driver who often uses the snow mode. For example, as shown in FIG. 2, the probe information analysis function calculates the snow mode usage frequency for each vehicle based on the vehicle ID and the snow mode switch operation information included in the collected probe information. Probe information collected from vehicles whose mode usage frequency is equal to or higher than a predetermined value can be extracted. Then, as shown in FIG. 3, the probe information analysis function is acquired at a timing when the snow mode is set on from a plurality of pieces of probe information collected from a vehicle whose usage frequency of the snow mode is a predetermined value or more. The obtained probe information is extracted as target probe information.

  In step S204, the target probe information extracted in step S203 is grouped by the probe information analysis function. In the present embodiment, as shown in FIG. 4, the probe information analysis function uses the target probe information extracted in step S203 as the vehicle type, region, day of the week and / or time zone, weather (presence of rain). And group by road type.

  In step S205, the traveling scene of the vehicle in which the snow mode tends to be set is specified by the probe information analysis function. For example, as shown in FIG. 5, the probe information analysis function is an object grouped by vehicle type, region, day of the week and / or time, weather (presence of rainfall), and road type. The average value and standard deviation of travel information (for example, outside air temperature, humidity, vehicle speed, average accelerator opening, average brake opening, and average steering angle) of the probe information are calculated for each group. Then, the probe information analysis function acquires the calculated average value and standard deviation as a probability model of each piece of traveling information in the traveling scene of the vehicle. Thereby, the probe information analysis function can specify the traveling scene of the vehicle in which the snow mode tends to be set.

  The probe information analysis function is shown in FIG. 6 when determining the average value and standard deviation of various types of travel information (for example, outside air temperature, humidity, vehicle speed, average accelerator opening, average brake opening, and average steering angle). As shown, when the value of any traveling information included in the target probe information is an outlier, the target probe information is excluded. Thereby, the average value and standard deviation of various traveling information can be calculated appropriately.

  In step S206, information on the traveling scene of the vehicle that tends to set the snow mode specified in step S205 is accumulated in the database 230 by the probe information analysis function. For example, the probe information analysis function calculates various travel information (for example, outside air temperature, humidity, vehicle speed, average accelerator opening, average brake opening, and average steering angle) calculated in step S205 in each vehicle travel scene. Are stored in the database 230.

  Next, an information providing process for providing snow mode guidance information to the driver will be described with reference to FIG. 10, steps S301 to S304 are executed by the information providing device 200, and steps S305 to S306 are executed by the in-vehicle device 100. In the example illustrated in FIG. 10, a vehicle to which snow mode guidance information is provided will be described as a target vehicle.

  In step S301, the probe information of the target vehicle transmitted from the in-vehicle device 100 of the target vehicle is received by the information providing function of the server processing device 220.

  In step S302, the information providing function of the server processing device 220 compares the traveling scene of the target vehicle with the traveling scene of the vehicle that tends to set the snow mode. In subsequent step S303, the information providing function determines whether or not the traveling scene of the target vehicle corresponds to the traveling scene of the vehicle in which the snow mode tends to be set based on the comparison result in step S302. Done. If the travel scene of the target vehicle corresponds to a travel scene of a vehicle that tends to be set in the snow mode, the process proceeds to step S304, and the travel scene of the target vehicle is that of a vehicle that tends to be set in the snow mode. When it does not correspond to a driving scene, it returns to step S301.

  In step S304, since it is determined that the traveling scene of the target vehicle corresponds to the traveling scene of the vehicle in which the snow mode tends to be set, the snow mode guidance information is converted into the target by the information providing function of the server processing device 220. It is transmitted to the in-vehicle device 100 of the vehicle.

  Steps S305 and S306 are executed by the in-vehicle device 100 of the target vehicle. First, in step S305, the snow mode guidance information transmitted from the information providing apparatus 200 is received by the information presentation function of the in-vehicle control apparatus 140. In step S306, the snow mode guidance information is presented to the driver by the information presentation function of the in-vehicle control device 140.

  As described above, the information providing apparatus 200 according to the present embodiment specifies a traveling scene of a vehicle in which a snow mode tends to be set based on a plurality of pieces of probe information collected from a plurality of vehicles. Information based on the driving scene of the vehicle in which the mode tends to be set is output. Accordingly, the driver can appropriately set the snow mode in the traveling scene of the vehicle in which the snow mode tends to be set.

  In the present embodiment, the travel information of the target vehicle is acquired from the target vehicle, and the travel scene of the target vehicle is specified based on the travel information of the target vehicle. Then, the traveling scene of the target vehicle is compared with the traveling scene of the vehicle that tends to set the snow mode, and the traveling scene of the target vehicle corresponds to the traveling scene of the vehicle that tends to set the snow mode. In this case, the snow mode guidance information for guiding the setting of the snow mode is output. As a result, when the traveling scene of the target vehicle corresponds to a traveling scene of a vehicle in which the snow mode tends to be set, the snow mode guidance information can be presented to the driver of the target vehicle. As a result, even a driver who has little experience in using the snow mode can set the snow mode appropriately.

  Further, in the present embodiment, the probe information includes at least one information of the vehicle position, time, region, vehicle type, weather, road type, outside air temperature, humidity, accelerator opening, brake opening, and steering angle. Based on multiple probe information obtained from multiple vehicles, areas where snow mode tends to be set, day of the week, time zone, vehicle type, weather, road type, outside temperature, humidity, accelerator opening, brake release The travel scene including one of the degree and the steering angle is specified as the travel scene of the vehicle in which the snow mode tends to be set. As a result, it is possible to specify in more detail the driving scene of the vehicle that tends to set the snow mode, and it is high whether the driving scene of the target vehicle corresponds to the driving scene that tends to set the snow mode. Judgment can be made with accuracy.

  In addition, in the present embodiment, probe information collected from a vehicle having a snow mode usage frequency equal to or higher than a predetermined value is extracted from a plurality of probe information collected from a plurality of vehicles, and based on the extracted probe information. The vehicle driving scene in which the snow mode tends to be set is specified. Thereby, even when the driver is not skilled in using the snow mode, the snow mode can be appropriately used in the same manner as the driver who is skilled in using the snow mode.

  In the present embodiment, when the vehicle travel information included in the probe information is an outlier in relation to the travel information included in the other probe information, the probe information that is an outlier is excluded. The vehicle driving scene in which the snow mode tends to be set is specified. Thereby, the traveling scene of the vehicle in which the snow mode tends to be set can be specified with higher accuracy.

  The embodiment described above is described for facilitating the understanding of the present invention, and is not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

  For example, in the above-described embodiment, the information providing apparatus 200 compares the travel scene of the target vehicle with the travel scene in which the snow mode tends to be set, and the travel scene of the target vehicle is set to the snow mode. The configuration in which the snow mode guidance information is provided to the in-vehicle device 100 when it corresponds to a traveling scene of a vehicle having a tendency has been illustrated, but is not limited to this configuration. For example, the information providing device 200 is set to the snow mode. Information of the traveling scene that tends to be transmitted to the in-vehicle device 100, and the in-vehicle device 100 compares the traveling scene of the target vehicle with the traveling scene that tends to set the snow mode. However, when it corresponds to a driving scene where the snow mode tends to be set, the snow mode guidance information is provided to the driver of the target vehicle. It may be configured to be.

  In the above-described embodiment, the information providing apparatus 200 refers to the database 230 and exemplifies the configuration for specifying the weather, precipitation, outside air temperature, and humidity when the probe information is acquired. However, the configuration is limited to this configuration. Instead, the vehicle-mounted device 100 may be configured to acquire information on the weather, precipitation, outside temperature, and humidity. For example, the sensor group 110 in the in-vehicle device 100 can include a raindrop sensor that detects raindrops, an outside air temperature sensor that detects outside air temperature, and a humidity sensor that detects humidity outside the vehicle. The acquisition function can acquire precipitation information from the raindrop sensor, outside temperature information from the outside temperature sensor, and humidity information from the humidity sensor as probe information. The probe information acquisition function can estimate weather information from precipitation information, outside air temperature information, or humidity information. For example, the probe information acquisition function can estimate that the weather is sunny when the precipitation is 0 mm. Thereby, the vehicle-mounted apparatus 100 can acquire the information regarding the weather at the time of acquiring probe information, precipitation, external temperature, and humidity.

  Furthermore, in the above-described embodiment, the snow mode is set in the traveling scene in which the outside temperature, humidity, vehicle speed, average accelerator opening, average brake opening, and average steering angle of the target vehicle are all the same as the target vehicle. When the vehicle is within the reference range of outside air temperature, humidity, vehicle speed, average accelerator opening, average brake opening, and average steering angle in a trending driving scene, the snow mode tends to be set for the driving scene of the target vehicle However, the present invention is not limited to this configuration. For example, the outside temperature, humidity, vehicle speed, average accelerator opening, average brake opening, and average steering angle of the target vehicle are not limited to this configuration. One or more of them are in the same driving scene as the target vehicle, and the outside air temperature, humidity, vehicle speed, and average When the vehicle is within the reference range of the vehicle opening, the average brake opening, and the average steering angle, it is determined that the traveling scene of the target vehicle corresponds to the traveling scene of the vehicle in which the snow mode tends to be set. be able to.

  Moreover, it is good also as a structure which judges whether the driving scene of an object vehicle corresponds to the driving scene of the vehicle which tends to set snow mode using driving information other than the driving information mentioned above. For example, using the road surface condition (frozen, snow cover, wet, dry, etc.) as travel information, it is determined whether the travel scene of the target vehicle corresponds to a travel scene of a vehicle that tends to be set in the snow mode. It is good also as a structure. The in-vehicle control device 140 acquires, for example, information on the use status of the wiper from the wiper switch, and the road surface state when the probe information is acquired from the use status and the weather, precipitation, outside temperature, and humidity (for example, Freezing, snow cover, wet, dry) can be estimated.

  In addition, in the above-described embodiment, the configuration in which the time zone when the probe information is acquired based on the time information acquired by the in-vehicle device 100 from the GPS device is illustrated, but the configuration is not limited to this configuration. For example, the operating device group 120 in the in-vehicle device 100 can include a light switch for operating the lighting of the light, and the probe information acquisition function of the in-vehicle control device 140 acquires information on the usage status of the light from the light switch. The time zone (for example, nighttime or daytime) when the probe information is acquired can be specified from the usage status.

  Furthermore, in the above-described embodiment, the in-vehicle device 100 of the target vehicle has exemplified the configuration in which the snow mode guidance information is acquired from the information providing device 200 by transmitting the probe information of the target vehicle to the information providing device 200. For example, the in-vehicle device 100 of the target vehicle transmits the request information different from the probe information to the information providing device 200 to acquire the snow mode guidance information from the information providing device 200. Also good.

  In addition, in the above-described embodiment, the configuration in which the snow mode guidance information is presented to the driver for the target vehicle that is not traveling in the snow mode, that is, the normal mode is illustrated. It is not limited. For example, by specifying a driving scene in which the snow mode tends to be set to off, the information for guiding the setting of the normal mode can be presented to the driver for the target vehicle running in the snow mode. Good.

  Moreover, although embodiment mentioned above illustrated the structure which shows snow mode guidance information to the driver of an object vehicle, it is not limited to this structure. For example, the information providing function guides the target vehicle to set the sport mode or the low fuel consumption mode (eco mode) by specifying a driving scene in which the sport mode or the low fuel consumption mode (eco mode) tends to be set. It can also be set as the structure which provides information.

  Furthermore, in the above-described embodiment, the configuration in which the information providing apparatus 200 transmits the snow mode guidance information to the in-vehicle apparatus 100 of the target vehicle is exemplified. However, the present invention is not limited to this configuration. The mode guidance information may be transmitted to a mobile terminal owned by the driver of the target vehicle.

  In addition, in the above-described embodiment, as shown in FIG. 4, the target probe information is grouped by combining all the travel information of the vehicle type, region, time zone, weather (presence of rainfall), and road type. However, the present invention is not limited to this configuration, and one or two or more of the vehicle type, region, time zone, weather (presence of rainfall), and road type of the vehicle are combined, and the target probe Information can be grouped.

  Furthermore, in the present embodiment, the information providing apparatus 200 determines the area where the vehicle was traveling, the weather, the precipitation, the outside temperature, the humidity, and the road based on the position information and time information of the vehicle included in the probe information. Although the configuration for specifying the type is illustrated, the configuration is not limited to this configuration. For example, in the in-vehicle device 100, the region in which the vehicle is traveling, the weather, the precipitation, the outside temperature, the humidity, and the type of the road are specified. Thus, the probe information including the area, weather, precipitation, outside air temperature, humidity, and road type can be transmitted to the information providing apparatus 200.

  Note that the server processing device 220 of the information providing device 200 according to the above-described embodiment corresponds to a controller of the present invention.

DESCRIPTION OF SYMBOLS 100 ... In-vehicle apparatus 110 ... Sensor group 120 ... Operation apparatus group 130 ... In-vehicle communication apparatus 140 ... In-vehicle control apparatus 150 ... Presentation apparatus 200 ... Information providing apparatus 210 ... Server communication apparatus 220 ... Server processing apparatus 230 ... Database

Claims (8)

An information providing method for collecting a plurality of probe information including travel information of a vehicle and setting information of a predetermined travel characteristic mode in the vehicle from a plurality of vehicles and outputting information based on an analysis result of the plurality of probe information Because
An information providing method for identifying a traveling scene of a vehicle in which the predetermined traveling characteristic mode tends to be set based on the plurality of probe information, and outputting output information based on the identified traveling scene. The information providing method according to claim 1,
Obtaining travel information of the target vehicle from the target vehicle, specifying a travel scene of the target vehicle based on the travel information of the target vehicle;
The traveling scene of the target vehicle is compared with the traveling scene of the vehicle in which the predetermined traveling characteristic mode tends to be set, and the traveling scene of the target vehicle tends to be set to the predetermined traveling characteristic mode. An information providing method for outputting, as the output information, information for guiding the setting of the predetermined traveling characteristic mode when the vehicle corresponds to a traveling scene of the vehicle. The information providing method according to claim 2,
The vehicle travel information includes at least one information of vehicle position, time, region, vehicle type, weather, road type, outside air temperature, humidity, accelerator opening, brake opening, and steering angle.
Based on the travel information of the vehicle, the region, day of the week, time zone, vehicle type, weather, road type, outside temperature, humidity, accelerator opening, brake opening, An information providing method for specifying a traveling scene including one of the steering angles as a traveling scene of the vehicle in which the predetermined traveling characteristic mode tends to be set. The information providing method according to claim 2,
The travel information of the target vehicle includes at least one information of the position, time, region, vehicle type, weather, road type, outside air temperature, humidity, accelerator opening, brake opening, and steering angle of the target vehicle,
Based on the travel information of the target vehicle, one of the region in which the target vehicle travels, day of the week, time zone, vehicle type, weather, road type, outside temperature, humidity, accelerator opening, brake opening, and steering angle An information providing method for specifying a travel scene including a travel scene of the target vehicle. It is the information provision method in any one of Claims 1-4,
Among the plurality of probe information collected from the plurality of vehicles, the probe information collected from a vehicle whose usage frequency of the predetermined traveling characteristic mode is a predetermined value or more is extracted, and based on the extracted probe information, An information providing method for identifying a traveling scene of a vehicle that tends to be set with a predetermined traveling characteristic mode. An information providing method according to any one of claims 1 to 5,
When the travel information of the vehicle included in the probe information becomes an outlier in relation to the travel information included in other probe information, except for the probe information including the travel information of the vehicle that becomes the outlier. An information providing method for specifying a traveling scene of a vehicle in which the predetermined traveling characteristic mode tends to be set. It is the information provision method in any one of Claims 1-6,
The information providing method, wherein the predetermined traveling characteristic mode is a snow mode in which traveling control of a vehicle corresponding to traveling on a traveling road having a road surface friction coefficient including a snowy road or a frozen road is a predetermined value or less. Information including a controller that collects a plurality of probe information including travel information of the vehicle and setting information of a predetermined travel characteristic mode in the vehicle from a plurality of vehicles and outputs information based on an analysis result of the plurality of probe information. A providing device,
The controller provides information for specifying a driving scene of a vehicle that tends to set the predetermined driving characteristic mode based on the plurality of probe information and outputting output information based on the specified driving scene. apparatus.

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