JP2019168993A - Data structure, information processing device, control method, program, and storage medium - Google Patents

Abstract

To provide a data structure for data which is transmitted to vehicles from an information processing device to control transmission of object detection information from the vehicles traveling on a road.SOLUTION: A server device 2 transmits download information Id pertaining to transmission-restricted spot information to each terminal device 1. The download information Id comprises a basic information portion and a specific information portion. The basic information portion comprises items including a "header" and "link ID." The specific information portion comprises the "information ID," "upload spot ID," "location," "day of the week/time of the day," "expiration date," and "upload probability." The "upload probability" specifies an upload probability for a target upload spot.SELECTED DRAWING: Figure 11

Description

  The present invention relates to a technique for acquiring peripheral information of a moving body such as a vehicle.

  Conventionally, a technique for updating map data based on an output of a sensor installed in a vehicle is known. For example, in Patent Literature 1, when a change point of a partial map is detected based on an output of a sensor installed on a moving body such as a vehicle, the driving support device transmits change point information regarding the change point to a server device. Is disclosed. Non-Patent Document 1 discloses specifications related to a data format for collecting data detected by a vehicle-side sensor with a cloud server.

JP 2006-156773 A

here website, Vehicle Sensor Data Cloud Information Interface Specification (v2.0.2), [Search February 5, 2018], Internet <URL: https://lts.cms.here.com/static-cloud- content / Company_Site / 2015_06 / Vehicle_Sensor_Data_Cloud_Ingestion_Interface_Specification.pdf>

  In a system in which data detected by a mobile sensor is collected by a server, the number of data uploads tends to increase on a road with a large amount of traffic, and traffic may increase excessively, which may reduce the communication bandwidth.

  The present invention has been made to solve the above-described problems, and is data transmitted from an information processing apparatus to a mobile unit, and controls transmission of detection information transmitted from the mobile unit traveling on a road. The main purpose is to provide a data structure of data that can be performed.

  The invention described in claim is a data structure of data transmitted to the mobile body by an information processing apparatus that collects detected object information that is information related to an object detected by the detection apparatus mounted on the mobile body, Point information indicating a point at which an object is detected by the device, and probability information for controlling transmission of the detected object information detected at the point, the detection object information detected by the detection device at the point The data structure includes probability information indicating the probability of necessity of transmission to the information processing apparatus.

  The invention described in the claims is an information processing apparatus that collects detected object information that is information related to an object detected by a detection apparatus mounted on a moving body, and indicates a point at which the detection apparatus detects an object. Probability information for controlling transmission of the point information and the detected object information detected at the point, and whether the detected object information detected by the detection device at the point is required to be transmitted to the information processing device Providing means for transmitting probability information indicating the probability to the mobile body.

  The invention described in the claims is a control method executed by an information processing apparatus that collects detected object information that is information related to an object detected by a detection apparatus mounted on a moving body, the object being detected by the detection apparatus. To the information processing device of the detected object information detected by the detection device at the point, the point information indicating the point to be detected and the probability information for controlling the transmission of the detected object information detected at the point And a transmission step of transmitting probability information indicating the probability of necessity of transmission to the mobile body.

  The invention described in claim is a data structure of data transmitted to the mobile body by an information processing apparatus that collects detected object information that is information detected by the detection apparatus mounted on the mobile body, Information processing device for the detection information detected by the detection device at the point, which is point information indicating a point to be detected by the device and probability information for controlling transmission of the detection information detected at the point And a probability information indicating the probability of necessity of transmission to the data structure.

It is a schematic structure of a data collection system. The block configuration of a terminal device and a server apparatus is shown. It is the block diagram which showed the process outline | summary which a terminal device performs. The data structure of the link information contained in map DB and delivery map DB of 1st Example is shown. It is a figure explaining the information designated by "position" and "length" which are subitems. It is the figure which showed the upload probability employ | adopted when the overlapping upload range exists for every area. The example of the data structure of the download information of 1st Example is shown. The data structure example of upload information is shown. It is an example of the flowchart which shows the process outline | summary of the terminal device in 1st Example. The data structure of the link information contained in map DB and delivery map DB of 2nd Example is shown. It is an example of the data structure of the download information of 2nd Example. It is an example of the flowchart which shows the process outline | summary of the terminal device in 2nd Example. It is a schematic structure of the data collection system which concerns on a modification.

  According to a preferred embodiment of the present invention, there is provided a data structure of data to be transmitted to the mobile body by an information processing apparatus that collects detected object information that is information related to an object detected by the detection apparatus mounted on the mobile body. , Point information indicating a point where an object is detected by the detection device, and probability information for controlling transmission of the detected object information detected at the point, the detection detected by the detection device at the point It is a data structure including probability information indicating the probability of necessity of transmission of object information to the information processing apparatus. Here, “detecting an object by a detection device” is not limited to the detection device detecting an object alone, but by another device performing a predetermined analysis process on the output data of the detection device. It also includes detecting an object. The information processing apparatus can suitably adjust the data amount of the detected object information transmitted to the information processing apparatus for each designated point by transmitting data having such a data structure to the mobile object. It becomes. Therefore, for example, it is possible to suitably suppress an increase in traffic and compression of a communication band due to an excessive number of uploads at a road point with a large amount of traffic.

  One aspect of the data structure further includes time designation information for designating a time zone or day of the week for controlling transmission of the detected object information based on the probability. According to this aspect, the probability information for controlling the transmission of the detected object information can be specified for each time zone or day of the week.

  In another aspect of the data structure, expiration date information indicating a time limit for controlling transmission of the detected object information based on the probability is further included. According to this aspect, it is possible to suitably suppress the old probability information that is not valid being referred to and used by the mobile object.

  According to another preferred embodiment of the present invention, there is provided an information processing apparatus that collects detected object information, which is information related to an object detected by a detection apparatus mounted on a moving body, and detects the object by the detection apparatus. The point information indicating the point and the probability information for controlling the transmission of the detected object information detected at the point, and transmitting the detected object information detected by the detection device at the point to the information processing device Providing transmission means for transmitting probability information indicating the necessity probability to the mobile body. According to this aspect, the information processing apparatus can suitably adjust the data amount of the detected object information transmitted from the moving body to the information processing apparatus for each designated point.

  According to another preferred embodiment of the present invention, there is provided a control method executed by an information processing apparatus that collects detected object information that is information related to an object detected by a detection apparatus mounted on a moving body, the detection apparatus And point information indicating a point where the object is detected, and probability information for controlling transmission of the detected object information detected at the point, information on the detected object information detected by the detection device at the point And a transmission step of transmitting probability information indicating a probability of necessity of transmission to the processing device to the mobile body. By executing this control method, the information processing apparatus can suitably adjust the data amount of the detected object information transmitted from the moving body to the information processing apparatus for each designated point.

  According to another preferred embodiment of the present invention, a program causes a computer to execute the control method described above. The computer functions as the information processing apparatus described above by executing this program. Preferably, the program is stored in a storage medium.

  According to another preferred embodiment of the present invention, the data structure of data transmitted to the mobile body by the information processing apparatus that collects detected object information that is information detected by the detection apparatus mounted on the mobile body is Information of the detection information detected by the detection device at the point, which is point information indicating a point to be detected by the detection device and probability information for controlling transmission of the detection information detected at the point And a probability information indicating a probability of necessity of transmission to the device. By transmitting data having such a data structure to the mobile body, it is possible to suitably adjust the data amount of the detection information transmitted to the information processing apparatus for each designated point. Therefore, for example, it is possible to suitably suppress an increase in traffic and compression of a communication band due to an excessive number of uploads at a road point with a large amount of traffic.

  Hereinafter, preferred first and second embodiments of the present invention will be described with reference to the drawings.

<First embodiment>
[Outline of data collection system]
FIG. 1 is a schematic configuration of a data collection system according to the first embodiment. The data collection system includes a terminal device 1 that moves together with each vehicle that is a moving body, and a server device 2 that communicates with each terminal device 1 via a network. Then, the data collection system updates the distribution map DB 5 which is a distribution map held by the server device 2 based on the information transmitted from each terminal device 1. In the following, the “map” includes data used for ADAS (Advanced Driver Assistance System) and automatic driving in addition to data referred to by a conventional in-vehicle device for route guidance.

  The terminal device 1 has a map DB 4 and is based on an output of a sensor unit 7 including a camera and a lidar (LIDAR: Laser Illuminated Detection and Ranging, Laser Imaging Detection and Ranging, or LiDAR: Light Detection and Ranging). Detect the object. In this embodiment, the terminal device 1 detects an object such as a feature based on the output of the sensor unit 7 and uploads information about the detected object together with attribute information of the vehicle on which the terminal device 1 is mounted. It transmits to the server apparatus 2 as “Iu”. Further, the terminal device 1 receives request information “Ir”, which is a request signal related to the transmission of the upload information Iu, from the server device 2, and controls the transmission of the upload information Iu based on the received information. The request information Ir includes information on a road section where the object is detected and the upload information Iu should be transmitted with a predetermined probability and information on the probability (also referred to as “transmission control section information”).

  The terminal device 1 may be a vehicle-mounted device attached to the vehicle, a part of the vehicle-mounted device, or a part of the vehicle. Alternatively, a portable terminal device such as a notebook PC may be used as long as the sensor unit 7 can be connected. The terminal device 1 is an example of an information transmission device. An external sensor such as a camera or a lidar is an example of a detection device.

  The server device 2 receives and stores the upload information Iu from each terminal device 1. For example, the server device 2 updates the distribution map DB 5 based on the collected upload information Iu. Further, the server device 2 transmits request information Ir including transmission control section information to each terminal device 1. The server device 2 is an example of an information processing device.

[Configuration of terminal device]
FIG. 2A is a block diagram illustrating a functional configuration of the terminal device 1. As shown in FIG. 2A, the terminal device 1 mainly includes a communication unit 11, a storage unit 12, an input unit 13, a control unit 14, an interface 15, and an output unit 16. Each element in the terminal device 1 is connected to each other via a bus line 98.

  Based on the control of the control unit 14, the communication unit 11 transmits the upload information Iu to the server device 2 and receives map data for updating the map DB 4 from the server device 2. Moreover, the communication part 11 may perform the process which transmits the signal for controlling a vehicle to a vehicle, and the process which receives the signal regarding the state of a vehicle from a vehicle.

  The storage unit 12 stores a program executed by the control unit 14 and information necessary for the control unit 14 to execute a predetermined process. In the present embodiment, the storage unit 12 stores the map DB 4, the sensor data cache 6, and the vehicle attribute information “IV”.

  Various data used in automatic driving, ADAS, and the like are recorded in the map DB 4. The map DB 4 is a database including, for example, road data representing a road network by a combination of nodes and links, facility data, and feature information around the road. The feature information includes information such as signs such as road signs, road markings such as stop lines, road demarcation lines such as center lines, and structures along the road. The feature information may include highly accurate point cloud information of the feature to be used for the vehicle position estimation. Further, as will be described later, transmission control section information is associated with the road data. In addition, the map DB 4 may store various data necessary for position estimation.

  The sensor data cache 6 is a cache memory that temporarily holds output data (so-called raw data) of the sensor unit 7. The vehicle attribute information IV indicates information related to the attributes of the vehicle on which the terminal device 1 is mounted, such as the type of vehicle, vehicle ID, vehicle length, vehicle width, vehicle height, and vehicle fuel type.

  The input unit 13 is a button operated by the user, a touch panel, a remote controller, a voice input device, and the like. For example, an input for specifying a destination for route search, an input for specifying on / off of automatic driving, and the like And the generated input signal is supplied to the control unit 14. The output unit 16 is, for example, a display or a speaker that performs output based on the control of the control unit 14.

  The interface 15 performs an interface operation for supplying the output data of the sensor unit 7 to the control unit 14 and the sensor data cache. The sensor unit 7 includes a plurality of external sensors for recognizing the surrounding environment of the vehicle such as a rider 31 and a camera 32, and internal sensors such as a GPS receiver 33, a gyro sensor 34, a position sensor 35, and a triaxial sensor 36. Including. The lidar 31 discretely measures the distance to an object existing in the outside world, recognizes the surface of the object as a three-dimensional point group, and generates point group data. The camera 32 generates image data taken from the vehicle. The position sensor 35 is provided for detecting the position of each external sensor, and the triaxial sensor 36 is provided for detecting the posture of each external sensor. The sensor unit 7 may include any external sensor and internal sensor other than the external sensor and the internal sensor shown in FIG. For example, the sensor unit 7 may include an ultrasonic sensor, an infrared sensor, a microphone, and the like as an external sensor. Any external sensor included in the sensor unit 7 functions as a detection device.

  The control unit 14 includes a CPU that executes a predetermined program on one or more platforms, and controls the entire terminal device 1. The control unit 14 functionally includes a position estimation unit 17, an object detection unit 18, an upload data generation unit 19, and a map update unit 20. The control unit 14 functions as a generation unit, a transmission unit, a control unit, a computer that executes a program, and the like.

  FIG. 3 is a block diagram illustrating an outline of processing of the position estimation unit 17, the object detection unit 18, the upload data generation unit 19, and the map update unit 20 of the terminal device 1.

  The position estimation unit 17 estimates the vehicle position (including the attitude of the vehicle) based on the output data of the sensor unit 7 held in the sensor data cache 6 and the map DB 4. The position estimation unit 17 can execute various position estimation methods. The position estimator 17 further collates the road data in the map DB 4 with autonomous navigation, a vehicle position estimation method based on dead reckoning (autonomous navigation) based on outputs of autonomous positioning sensors such as the GPS receiver 33 and the gyro sensor 34, and the like. Vehicle position estimation method for performing processing (map matching), output data of external sensors such as the lidar 31 and the camera 32 on the basis of a predetermined object (landmark) existing around, and the land indicated by the feature information of the map DB 4 A vehicle position estimation method based on the mark position information is executed. And the position estimation part 17 performed the position estimation method used as the highest estimation precision among the position estimation methods which can be performed now, for example, and showed the own vehicle position etc. which were obtained based on the performed position estimation method The vehicle position information is supplied to the upload data generation unit 19.

  The object detection unit 18 detects a predetermined object based on point cloud information, image data, audio data, and the like output from the sensor unit 7. In the present embodiment, the object detection unit 18 detects a predetermined object based on the data output from the sensor unit 7, and generates data related to the detected object (also referred to as “object data”) as upload data. Supply to section 19. Here, the object data includes various attribute information such as the position, type, and size of the object detected by using various pattern recognition techniques, and further includes point cloud information of the object, , Image data, and audio data itself may be included.

  The upload data generation unit 19 generates upload information Iu based on the own vehicle position information supplied from the position estimation unit 17, the object data supplied from the object detection unit 18, and the vehicle attribute information IV. Then, the upload data generation unit 19 transmits the generated upload information Iu to the server device 2 through the communication unit 11. Here, when the upload data generation unit 19 refers to the transmission control section information included in the map DB 10 and determines that the current position is in a section that restricts transmission of the upload information Iu, the upload data generation section 19 is associated with the section. Whether the upload information Iu needs to be transmitted is determined based on the probability. The transmission control of the upload data generation unit 19 will be described in the [Processing flow] section, and the data structure of the upload information Iu transmitted by the upload data generation unit 19 will be described in detail in the [Data structure] section.

  The map update unit 20 updates the map DB 4 based on the map update information received from the server device 2 by the communication unit 11. The map updating unit 20 may register the transmission control section information included in the request information Ir received from the server device 2 in the map DB 4.

[Configuration of server device]
FIG. 2B is a block diagram illustrating a functional configuration of the server device 2. As illustrated in FIG. 2B, the server device 2 mainly includes a communication unit 21, a storage unit 22, and a control unit 23. Each element in the server device 2 is connected to each other via a bus line 99.

  Based on the control of the control unit 23, the communication unit 21 receives the upload information Iu from each terminal device 1, and sends request information Ir to notify each terminal device 1 of a section and a probability that the upload Iu should be transmitted. Or send.

  The storage unit 22 stores a program executed by the control unit 23 and information necessary for the control unit 23 to execute a predetermined process. In the present embodiment, the storage unit 22 stores a distribution map DB 5 and an upload information DB 9.

  The distribution map DB 5 is map data for distribution to each terminal device 1 and has the same data structure as the map DB 4. In this embodiment, transmission control section information described later is recorded in the map DB 4 and the distribution map DB 5 in association with road data. In the upload information DB 9, upload information Iu received from each terminal device 1 by the communication unit 21 based on the control of the control unit 23 is accumulated.

  The control unit 23 includes a CPU that executes a predetermined program, and controls the entire server device 2. In the present embodiment, the control unit 23 stores the upload information Iu in the upload information DB 9 when the communication unit 21 receives the upload information Iu from the terminal device 1. In addition, the control unit 23 transmits request information Ir including transmission control section information to the terminal device 1 through the communication unit 21.

[data structure]
Next, each data structure of map DB4, distribution map DB5, request information Ir, and upload information Iu is each demonstrated.

(1) Map DB and distribution map DB
First, the data structures of the map DB 4 and the distribution map DB 5 will be described. The map DB 4 and the distribution map DB 5 include link information regarding links when the road network is represented by links and nodes as road data. In this embodiment, the link information is associated with transmission control section information indicating the probability of the terminal apparatus 1 transmitting the generated upload information Iu to the server apparatus 2 (also referred to as “upload probability”) for each road section. ing.

  FIG. 4 shows the data structure of link information included in the map DB 4 and the distribution map DB 5. As shown in FIG. 4, the link information includes a basic information part and a unique information part.

  The basic information part includes items (for example, a link ID, a link length, etc.) that specify information related to the target link.

  The unique information section includes items of “information ID”, “basic upload probability”, “number of upload ranges”, and “upload range n” (n = 1, 2,...).

  “Information ID” is an item for designating an identification number or the like for specifying the data structure of the unique information section. In this embodiment, the data structure of the unique information section is a data structure for designating transmission control section information. An identification number indicating this is designated as the “information ID”. The “basic upload probability” is an item that specifies the upload probability for a range that is not included in a road section (also referred to as “upload range”) in which the upload probability described later is individually specified, out of the entire range of the target link. is there. “Number of upload ranges” is an item for designating the number of upload ranges set for the target link.

  Each item of “upload range n” (n = 1, 2,...) Is an item for specifying information related to an individual upload range, and is provided in the number specified by “number of upload ranges”. Each “upload range n” includes a plurality of sub-items, and “upload range ID”, “position”, “length”, “priority”, “day / time zone”, “expiration date”, “expiration date”, “ Each sub-item of “upload probability” is included.

  In the “upload range ID”, a unique ID assigned to each upload range recorded in the map DB 4 and the distribution map DB 5 is designated. In the “position”, information indicating the position of the target upload range is specified. For example, information indicating the distance from the start point of the target link to the start point or end point of the upload range may be specified as the “position”. In the “length”, information indicating the length of the target upload range is specified. Information specified in “upload range ID”, “position”, and “length” is an example of section information.

  In the “priority”, information indicating the priority of the target upload range is specified. This priority is used to determine which upload range or the like should be preferentially referred to in an upload range overlapping section. In the “day of the week / time zone”, a day of the week and / or a time zone in which the target upload range is valid is designated. In the “expiration date”, an expiration date for which the target upload range is valid is designated. In the “upload probability”, the upload probability for the target upload range is designated. For example, the upload probability is set such that the upload range with a high traffic volume has a lower value. As a result, it is possible to suitably suppress the increase in traffic and the compression of the communication band due to the excessive number of uploads of the upload information Iu for roads with heavy traffic. The information specified in “Upload probability” is an example of probability information.

  FIG. 5 is a diagram for explaining information specified in the sub-items “position” and “length” described above. FIG. 5 shows the link Lk1 of the start point P1 and the end point P4, and the upload range (rectangular region described as “range”) of the start point P2 and the end point P3 specified in the link Lk1. In this case, for example, a distance corresponding to the length of the arrow 61 (that is, a distance from the start point P1 of the link Lk1 to the start point P2 of the upload range) is designated in the sub-item “position” corresponding to the upload range shown in the figure. In the sub-item “length”, a distance corresponding to the arrow 62 (that is, a distance from the start point P2 to the end point P3 of the upload range) is designated.

  FIG. 6 is a diagram illustrating the upload probability adopted by the terminal device 1 for each section when the overlapping upload ranges A and B are specified for the link Lk2 of the start point P11 and the end point P16. Here, the upload range A is a rectangular area of the start point P12 and the end point P15 described as “range A”, with “priority” set to 9 and “upload probability” set to 0.5. The upload range B is a rectangular area of the start point P13 and the end point P14, which is described as “range B”, and “priority” is set to 10 and “upload probability” is set to 0.8.

  In this case, the terminal device 1 has a basic upload probability (here, 0) in the section from the point P11 to the point P12 and the section from the point P15 to the point P16 that do not belong to either the upload range A or the upload range B. .1), it is determined whether or not the upload information Iu is to be transmitted. In addition, the terminal device 1 belongs to the upload range A and does not belong to the upload range B. In the section from the point P12 to the point P13 and the section from the point P14 to the point P15, the upload probability (here, 0) .5), it is determined whether the upload information Iu needs to be transmitted. Also, the terminal device 1 has an upload probability (here, 0. 0) of the upload range (here, the upload range B) having the highest priority in the section from the point P13 to the point P14 that belongs to both the upload range A and the upload range B. Based on 8), the necessity of transmission of the upload information Iu is determined. Thus, by giving priority information to each upload range, the terminal device 1 can suitably determine the upload probability to be referenced even in a section where the upload ranges overlap. .

  As shown in FIG. 4, the transmission control section information is not limited to the aspect added to the road data (link data) as the specific information section, and may be managed as data different from the road data. For example, in this case, the server device 2 may store a database of transmission control section information generated for each upload range or each link ID as part of the distribution map DB 5. Similarly, the terminal device 1 may store the above-described transmission control section information database as a part of the map DB 4.

(2) Request information FIG. 7 shows an example of the data structure of the request information Ir. As shown in FIG. 7, the request information Ir includes a basic information part and a specific information part. The basic information part includes items of “header” and “link ID”. The “header” is an item for specifying header information of the request information Ir, and the server apparatus 2 stores information such as the version information of the data format of the request information Ir and the time stamp indicating the time when the object is detected as the “header”. Is specified.

  The unique information section includes items related to specific transmission control section information. Specifically, the specific information section includes “information ID”, “upload range ID”, “position”, “length”, “priority”, “day of the week / time zone”, “expiration date”, “upload probability” "including.

  “Information ID” is an item for designating an identification number or the like for specifying the data structure of the unique information section. In this embodiment, the data structure of the unique information section is a data structure for designating transmission control section information. An identification number indicating this is designated as the “information ID”. In the “upload range ID”, a unique ID assigned to the target upload range specified in the request information Ir is specified. “Position” specifies information indicating the position of the target upload range, and “Length” specifies information indicating the length of the target upload range. In the “priority”, information indicating the priority of the target upload range is specified. In the “day of the week / time zone”, a day of the week and / or a time zone in which the target upload range is valid is designated. In the “expiration date”, an expiration date for which the target upload range is valid is designated. In the “upload probability”, the upload probability for the target upload range is designated.

  The data structure of the request information Ir is not limited to that shown in FIG. For example, the server device 2 may distribute the link information having the data structure shown in FIG. 4 as the request information Ir to each terminal device 1 as the request information Ir. Even in this case, the server device 2 can preferably distribute the request information Ir including the transmission control section information to each terminal device 1. Note that the server device 2 may transmit the terminal device 1 that is the transmission target of the request information Ir limited to the terminal device 1 that is positioned around the upload range defined in the request information Ir. In this case, for example, the server device 2 recognizes the position of each terminal device 1 based on the position information included in the upload information Iu received from each terminal device 1.

(3) Upload Information FIG. 8 is an example of the data structure of the upload information Iu that the terminal device 1 transmits to the server device 2. As shown in FIG. 8, the upload information Iu includes a basic information part and a unique information part.

  The basic information section includes items related to the vehicle of the terminal device 1 that detected the object. Specifically, the basic information section includes items of “header”, “vehicle metadata”, “vehicle position”, and “vehicle speed”. Here, the “header” is an item for designating header information of the upload information Iu, and the terminal device 1 stores information such as version information of the data format of the upload information Iu and a time stamp indicating the time when the object is detected. Specify "Header". “Vehicle metadata” is an item that specifies vehicle metadata. The terminal device 1 refers to the vehicle attribute information IV and the like, so that the vehicle type, vehicle ID, vehicle length, vehicle width, vehicle height, etc. Various attribute information of the vehicle on which the terminal device 1 is mounted is designated as “vehicle metadata”. “Vehicle position” is an item for designating vehicle position information, and the terminal device 1 designates the position information of the vehicle when the object is detected as “vehicle position”. The “vehicle speed” is an item for designating vehicle speed information, and the terminal device 1 designates the vehicle speed information measured when the object is detected as the “vehicle speed”.

  The unique information section includes items related to the object detected by the terminal device 1. Specifically, the unique information section includes “information ID”, “object type”, “object position”, and the like. “Information ID” is an item for designating an identification number or the like for specifying the data structure of the specific information section. “Object type” is an item for specifying type information of an object. The “object position” is an item for designating information related to the position of the object.

[Processing flow]
FIG. 9 is an example of a flowchart showing an outline of processing of the terminal device 1 in the first embodiment.

  First, the terminal device 1 determines whether or not the request information Ir has been received from the server device 2 (step S101). And the terminal device 1 memorize | stores request information Ir, when request information Ir is received from the server apparatus 2 (step S101; Yes) (step S102). Note that the terminal device 1 may register the transmission control section information included in the request information Ir in the map DB 4. On the other hand, when the terminal device 1 has not received the request information Ir from the server device 2 (step S101; No), the process proceeds to step S103.

  Next, the terminal device 1 determines whether or not a predetermined object has been detected (step S103). In this case, for example, the terminal device 1 detects an object based on the output of an external sensor such as the lidar 31 or the camera 32, and applies the known pattern matching technique to the detected object so that the object is a predetermined target object. It is judged whether it corresponds to.

  When the terminal device 1 determines that a predetermined object has been detected (step S103; Yes), the terminal device 1 refers to the link information of the map DB 4 corresponding to the current position and the request information Ir stored in step S102, and uploads it. It is determined whether or not there is a vehicle in a section in which the probability (including the basic upload probability) is defined (step S104). Then, when a vehicle is present in the section in which the upload probability is defined (step S104; Yes), the terminal device 1 determines whether or not the vehicle is present within the effective upload range (step S105). For example, the terminal device 1 determines whether or not the vehicle exists within the upload range defined in the map DB 4 or the request information Ir and satisfies the conditions regarding the specified expiration date and day / time zone. judge.

  And when the vehicle exists in the valid upload range (step S105; Yes), the terminal device 1 transmits the upload information Iu related to the object detected in step S103 according to the upload probability for the upload range at the current position ( Step S106). Thereby, the terminal device 1 can suitably suppress an increase in communication traffic and a compression of the communication band due to an excessive number of uploads of the upload information Iu for roads with a large traffic volume. The terminal device 1 transmits the upload information Iu according to the upload probability for the upload range with the highest priority when a vehicle is present at a position where the valid upload ranges overlap.

  On the other hand, when the vehicle does not exist within the effective upload range (step S105; No), the terminal device 1 transmits the upload information Iu related to the object detected in step S103 according to the basic upload probability ( Step S107).

  If there is a vehicle in a section where the upload probability is not defined (step S104; No), the terminal device 1 determines that there is no need to limit the transmission frequency of the upload information Iu based on the upload probability, and the step Upload information Iu related to the object detected in S103 is transmitted (step S108). Note that the terminal device 1 does not have to generate and transmit the upload information Iu when there is a vehicle in a section where the upload probability is not defined, instead of the processing of the flowchart of FIG. 9. That is, the terminal device 1 may generate and transmit the upload information Iu only when there is a vehicle in a section where the upload probability (including the basic upload probability) is defined.

  As described above, in the first embodiment, transmission control section information in which an upload probability is defined for each upload section is included in the map DB 4, the distribution map DB 5, and the request information Ir. Thereby, the server device 2 can suitably adjust the traffic of the upload information Iu so that the received data amount of the upload information Iu is not biased for each road section. Furthermore, since it is determined whether each vehicle uploads according to the probability using a random number or the like generated by a terminal device of the vehicle, adjustment by management on the server side or inter-vehicle communication becomes unnecessary.

<Second embodiment>
In the data collection system of the second embodiment, the map DB4, the distribution map DB5, and the request information Ir should be detected instead of or in addition to the transmission control section information and the upload information Iu should be transmitted. It differs from the first embodiment in that it includes information on the location and the upload probability at that location (also referred to as “transmission control location information”). Below, the same code | symbol is attached | subjected suitably to the component similar to the data collection system of 1st Example, and the description is abbreviate | omitted.

[data structure]
First, each data structure of map DB4, distribution map DB5, and request information Ir which concerns on 2nd Example is each demonstrated. Since the data structure of the upload information Iu is the same as that of the first embodiment, its description is omitted.

(1) Map DB and distribution map DB
First, the data structures of the map DB 4 and the distribution map DB 5 will be described. The map DB 4 and the distribution map DB 5 include link information regarding links when the road network is represented by links and nodes as road data. In this embodiment, transmission control point information indicating the upload probability for each point is associated with the link information. Hereinafter, a point on the road where the upload probability is individually defined is also referred to as an “upload point”.

  FIG. 10 shows a data structure of link information included in the map DB 4 and the distribution map DB 5 in the second embodiment. As shown in FIG. 10, the link information includes a basic information part and a unique information part.

  The basic information part includes items (for example, a link ID, a link length, etc.) that specify information related to the target link.

  The unique information section includes items of “information ID”, “number of upload points”, and “upload point n” (n = 1, 2,...).

  “Information ID” is an item for designating an identification number or the like for specifying the data structure of the unique information section. In this embodiment, the data structure of the unique information section is a data structure for designating transmission control point information. An identification number indicating this is designated as the “information ID”. “Number of upload points” is an item for designating the number of upload points set for the target link.

  Each item of “Upload Point n” (n = 1, 2,...) Is an item for specifying information regarding individual upload points, and is provided in the number specified by “Number of Upload Points”. “Upload point n” includes a plurality of sub-items, and includes sub-items of “upload point ID”, “position”, “day of the week / time zone”, “expiration date”, and “upload probability”.

  In the “upload point ID”, a unique ID assigned to each upload point recorded in the map DB 4 and the distribution map DB 5 is designated. In “position”, information indicating the position of the target upload point is designated. For example, information indicating the distance from the start point of the target link to the start point or end point of the upload point may be specified in the “position”. The information designated by “upload point ID” and “position” is an example of point information.

  In the “day of the week / time zone”, a day of the week and / or a time zone in which the target upload point is valid is designated. In the “expiration date”, an expiration date at which the target upload point is valid is designated. In the “upload probability”, the upload probability for the target upload point is designated. For example, the upload probability is set so that the upload point with a larger traffic volume has a lower value. Thereby, it is possible to suitably suppress the increase in communication traffic and the compression of the communication band due to the excessive number of uploads of the upload information Iu for road points with a large traffic volume. The information designated as “upload probability” is an example of probability information.

(2) Request information FIG. 11 shows an example of the data structure of the request information Ir. As shown in FIG. 11, the request information Ir includes a basic information part and a specific information part. The basic information part includes items of “header” and “link ID”. The “header” is an item for specifying header information of the request information Ir, and the server apparatus 2 stores information such as the version information of the data format of the request information Ir and the time stamp indicating the time when the object is detected as the “header”. Is specified.

  The unique information section includes items related to specific transmission control section information. Specifically, the unique information section includes “information ID”, “upload range ID”, “position”, “day of the week / time zone”, “expiration date”, and “upload probability”.

  “Information ID” is an item for designating an identification number or the like for specifying the data structure of the unique information section. In this embodiment, the data structure of the unique information section is a data structure for designating transmission control point information. An identification number indicating this is designated as the “information ID”. In the “upload point ID”, a unique ID assigned to the target upload point specified in the request information Ir is specified. “Position” specifies information indicating the position of the target upload point, and “Day of the week / time zone” specifies a day of the week and / or a time zone when the target upload point is valid. In the “expiration date”, an expiration date at which the target upload point is valid is designated. In the “upload probability”, the upload probability for the target upload point is designated.

  The data structure of the request information Ir is not limited to that shown in FIG. For example, the server device 2 may distribute link information having the data structure shown in FIG. 10 as the request information Ir to each terminal device 1 as the request information Ir. Even in this case, the server device 2 can suitably distribute the request information Ir including the transmission control point information to each terminal device 1.

[Processing flow]
FIG. 12 is an example of a flowchart showing an outline of processing of the terminal device 1 in the second embodiment.

  First, the terminal device 1 determines whether or not the request information Ir has been received from the server device 2 (step S201). And the terminal device 1 memorize | stores request information Ir, when request information Ir is received from the server apparatus 2 (step S201; Yes) (step S202). The terminal device 1 may register the transmission control point information included in the request information Ir in the map DB 4. On the other hand, when the terminal device 1 has not received the request information Ir from the server device 2 (step S201; No), the process proceeds to step S203.

  Next, the terminal device 1 determines whether or not the vehicle passes through a valid upload point defined by the map DB 4 or the request information Ir stored in step S202 (step S203). For example, in the terminal device 1, the vehicle passes through an uploading point defined in the map DB 4 or the request information Ir and satisfying a condition regarding a specified expiration date and / or day of the week / time zone. It is determined whether or not.

  When the vehicle passes the valid upload point defined by the map DB 4 or the request information Ir stored in step S202 (step S203; Yes), the terminal device 1 outputs the external sensors such as the lidar 31 and the camera 32. The upload information Iu of the object detected at the upload point based on the above is transmitted according to the upload probability (step S204). Thereby, the terminal device 1 can suitably suppress an increase in communication traffic and a compression of the communication band due to an excessive number of uploads of the upload information Iu for roads with a large traffic volume. On the other hand, when the vehicle does not pass through the valid upload point defined by the request information Ir stored in the map DB 4 or step S202 (step S203; No), the terminal device 1 returns the process to step S201.

  As described above, in the second embodiment, transmission control point information in which an upload probability is defined for each upload point is included in the map DB 4, the distribution map DB 5, and the request information Ir. Thereby, the server apparatus 2 can set the point which wants the information of a target object as an upload point, and can receive suitably the upload information Iu regarding the target object detected in the said point. Further, the server device 2 can suitably adjust the traffic of the upload information Iu for each upload point so that the received data amount of the upload information Iu does not vary for each set upload point.

<Modification>
Hereinafter, modified examples suitable for the first and second embodiments will be described.

[Modification 1]
The processing of the server device 2 described in the first and second embodiments may be executed by a server system (so-called cloud server) including a plurality of server devices.

  For example, the server system may include a server that stores the distribution map DB 5 and a server that performs a distribution process of request information Ir including transmission control section information or / and transmission control point information. In this case, each server appropriately receives information necessary for executing a process assigned in advance from another server and executes a predetermined process.

  Moreover, transmission control section information or / and transmission control point information may be exchanged between the terminal device 1 and the server device 2 or may be exchanged between servers. FIG. 13 is a schematic configuration of a data collection system according to a modification. The data collection system illustrated in FIG. 13 includes a plurality of terminal devices 1, a vehicle cloud 2A, and a map cloud 2B. The vehicle cloud 2A is a server group mainly managed by a car vendor, and the map cloud 2B is a server group mainly managed by a map vendor.

  In this case, the vehicle cloud 2A and the map cloud 2B may receive the upload information Iu from the terminal device 1 of each vehicle, similarly to the server device 2 of the embodiment. Further, the vehicle cloud 2A may transmit data having the data structure shown in FIG. 7 or FIG. 11 to the map cloud 2B.

[Modification 2]
In the first embodiment, the server device 2 may transmit the request information Ir specifying the upload probability to the terminal device 1 without specifying the upload range instead of the data structure shown in FIG.

  For example, in this case, the server device 2 transmits the request information Ir designating the upload probability to the terminal device 1 existing in the section where the transmission of the upload information Iu is to be controlled with a predetermined upload probability. When the terminal device 1 receives the request information Ir, the terminal device 1 transmits the upload information Iu with the upload probability specified in the request information Ir, for example, within a predetermined time or until traveling a predetermined distance. Thus, the request information Ir does not have to include information related to the upload range.

[Modification 3]
For sections or points where the upload probability described in the first and second embodiments is not set, the terminal device 1 may control the transmission of the upload information Iu based on the preset upload probability. Furthermore, the terminal device 1 may change the upload probability depending on the time zone for a section or a point where the upload probability is not set. In this case, for example, the terminal device 1 stores table information in which the time zone is associated with the upload probability, and recognizes the upload probability corresponding to the current time zone by referring to the table information. Based on the upload probability, transmission control of the upload information Iu is performed.

[Modification 4]
In the first and second embodiments, when the terminal device 1 detects an object, the terminal device 1 transmits upload information Iu including information about the detected object to the server device 2 based on a predetermined upload probability. . Instead of this, or in addition to this, the terminal device 1 uses the server device 2 to detect vehicle information and near-miss information based on outputs from a speed sensor, an acceleration sensor, and / or a driver's state information detected by a biosensor or the like. When transmitting to, transmission control may be performed based on the upload probability specified in the map DB 4 or the request information Ir. In this case, the map DB 4 and the request information Ir include transmission control section information that defines an upload probability, an upload range, and the like for the transmission of the above-described vehicle information, near-miss information, and / or state information. Based on the above-described transmission control section information, whether or not the above-described vehicle information, near-miss information, and / or state information is to be transmitted to the server device 2 is determined. The vehicle information, near-miss information, state information, and the like described above are examples of detection information.

[Modification 5]
In the first and second embodiments, the expiration date may be set for each upload range, but instead, the start date or time when the upload range becomes valid and the end date when the upload range becomes invalid Alternatively, an effective period indicating time may be set. In this case, the terminal device 1 deletes the information of the upload range when there is an upload range whose validity period or expiration date has expired among the upload ranges recorded in the map DB 4 or the received request information Ir. Alternatively, the server device 2 may be checked for the presence / absence of an update related to the specific information section. In the latter case, when there is update information for the target specific information section, the terminal device 1 receives the update information from the server device 2, and controls transmission of the upload information Iu with reference to the received update information.

[Modification 6]
In the item “day of the week / time zone” shown in FIGS. 4, 7, 10, 11 and the like, a plurality of days of the week and / or time zones in which the target upload range is valid may be set.

[Modification 7]
When the terminal device 1 determines that an object detection result different from the map DB 4 is obtained based on the comparison between the object detection result and the map DB 4 (that is, when a change is seen in a structure or the like). Only when the upload information Iu is controlled to be transmitted according to the upload probability and no change is observed, the upload information Iu may not be transmitted.

1 terminal device 2 server device 4 map DB
5 distribution map DB
6 Sensor data cache 7 Sensor unit 9 Upload information DB

Claims (8)

An information processing device that collects detected object information, which is information related to an object detected by a detection device mounted on a moving body, is a data structure of data transmitted to the moving body,
Point information indicating a point where an object is detected by the detection device;
Probability information for controlling transmission of the detected object information detected at the point, the probability indicating the probability of necessity of transmission of the detected object information detected by the detection device at the point to the information processing device And a data structure containing information.   The data structure according to claim 1, further comprising time designation information for designating a time zone or a day of the week for restricting transmission of the detected object information based on the probability.   The data structure according to claim 1, further comprising expiration date information indicating a time limit for limiting transmission of the detected object information based on the probability. An information processing apparatus that collects detected object information that is information related to an object detected by a detection apparatus mounted on a moving body,
Point information indicating a point where an object is detected by the detection device;
Probability information for controlling transmission of the detected object information detected at the point, the probability indicating the probability of necessity of transmission of the detected object information detected by the detection device at the point to the information processing device Information and
An information processing apparatus comprising transmission means for transmitting the information to the mobile body. A control method executed by an information processing apparatus that collects detected object information, which is information related to an object detected by a detection apparatus mounted on a moving body,
Point information indicating a point where an object is detected by the detection device;
Probability information for controlling transmission of the detected object information detected at the point, the probability indicating the probability of necessity of transmission of the detected object information detected by the detection device at the point to the information processing device Information and
A control method comprising: a transmission step of transmitting a message to the mobile body.   A program for causing a computer to execute the control method according to claim 5.   A storage medium storing the program according to claim 6. An information processing device that collects detected object information that is information detected by a detection device mounted on a moving body is a data structure of data transmitted to the moving body,
Point information indicating a point to be detected by the detection device;
Probability information for controlling transmission of the detection information detected at the point, the probability information indicating a probability of necessity of transmission of the detection information detected by the detection device at the point to the information processing device; , Containing data structures.