JP6398672B2 - Information distribution device - Google Patents

Description

  The present invention relates to a technique for distributing information provided by a provider to a user.

2. Description of the Related Art Conventionally, there is known a technique for distributing an evaluation value, which is a numerical evaluation of information provided from a provider, together with the information to a user.
Patent Document 1 describes a technique for distributing the evaluation value for evaluating whether the provided information is reliable information, that is, the reliability in Patent Document 1, together with the provided information. The evaluation value of the provided information is calculated according to the degree of coincidence between the position of the provider when the information is provided and the usual action position of the provider.

Japanese Patent No. 5476571

  However, in the above-described technique, the evaluation value is calculated based on the usual action position of the provider, that is, one person, so that even if there is an error in the provided information, the action position matches. An evaluation value indicating that the information is reliable can be calculated. For example, suppose that the provider provides information that while driving on a highway, he / she has witnessed a dangerous vehicle traveling at a speed significantly exceeding the legal speed of the highway. In the above-described technology, when the provider normally uses the expressway, even if there is an error in the information provided, there is an inappropriate evaluation value indicating that the information is reliable. Can be calculated. That is, the evaluation value may not be calculated appropriately for the user.

  The present invention has been made in view of the above problems, and an object thereof is to provide a technique in which an evaluation value is appropriately calculated for a user.

  One aspect of the present invention is an information distribution device, which includes an information reception unit, a shared information group recording unit, a usefulness calculation unit, and a distribution unit. The information receiving means receives attention information. The caution information is information around the vehicle that is transmitted from a communication device mounted on the vehicle and based on the determination of the driver of the vehicle, and indicates the caution content that should be alerted to other drivers. The shared information group recording means accumulates the attention information received by the information receiving means and records it as a shared information group. The usefulness calculating means calculates a usefulness indicating the usefulness of the attention information. The distribution unit distributes the attention information received by the information reception unit together with the usefulness calculated by the usefulness calculation unit to at least a communication device mounted on another vehicle via a wireless communication network.

  In addition, the usefulness calculating means shares information indicating the sameness as the attention information when the information indicating the sameness as the newly received attention information is present in the shared information group recorded by the shared information group recording means. A multi-sighted usefulness calculating means for calculating a usefulness higher than when not present in the information group is provided.

  In such a configuration, when attention information indicating identity is transmitted from a plurality of drivers, the usefulness of the attention information is calculated to be high. In other words, when the attention content is witnessed by a plurality of drivers, the usefulness that is the evaluation value is calculated with the attention value indicating that the attention information indicating the attention content is high in reliability. It can be calculated appropriately for the driver of the distribution destination who is the user of the information.

  In addition, the code | symbol in the parenthesis described in the claim shows the correspondence with the specific means as described in embodiment mentioned later as one aspect, Comprising: The technical scope of this invention is limited is not.

The block diagram which shows the structure of an information delivery system. The block diagram which shows the structure of a delivery server. The flowchart which shows an example of a delivery process. The flowchart which shows an example of a usefulness calculation process. The flowchart which shows an example of multiple sighting usefulness calculation processing. The flowchart which shows an example of a behavior tendency useful degree calculation process. The flowchart which shows an example of an objective usefulness calculation process. The flowchart which shows an example of a correction usefulness degree calculation process. The flowchart which shows an example of an evaluation usefulness degree calculation process. The figure which shows an example of an operation | movement of an information delivery system and a delivery server.

Embodiments to which the present invention is applied will be described below with reference to the drawings.
[Embodiment]
[1. Constitution]
The information distribution system shown in FIG. 1 includes a distribution server 1 and an in-vehicle device 21 mounted on the vehicle 2. The distribution server 1 is realized as a WEB server, for example, and is wired to the Internet network 3A. A data communication base station 3B is wired to the Internet network 3A. The data communication base station 3B is connected to the vehicle-mounted device 21 mounted on the vehicle 2 so as to be capable of wireless communication. That is, the distribution server 1 is configured to be capable of wireless communication with the vehicle-mounted device 21 mounted on the vehicle 2 via the Internet network 3A and the data communication base station 3B. The data communication base station 3B is, for example, a mobile data communication base station or a road-to-vehicle communication base station. In this embodiment, a mobile data communication base station is used. Instead of the Internet network 3A, other digital wireless communication networks (Ethernet (registered trademark) LAN or wide area IP network) may be used. In FIG. 1, as an example, the vehicle-mounted device 21 is shown mounted on the vehicle 2A, the vehicle 2B, and the vehicle 2C. In the following, when necessary for explanation, for example, the vehicle 2 is described as a vehicle 2A, and the vehicle-mounted device 21 mounted on the vehicle 2A is described as a vehicle-mounted device 21A with a suffix.

As shown in FIG. 2, the distribution server 1 includes a communication unit 11, a recording unit 12, and a control unit 13.
The communication unit 11 receives the attention information transmitted from the vehicle-mounted device 21 and the driver identification number for identifying the driver of the vehicle 2 on which the vehicle-mounted device 21 on which the vehicle-mounted device 21 is transmitted. And the driver identification number are output to the control unit 13. In addition, the communication unit 11 transmits the received caution information and the usefulness calculated by the control unit 13 for the caution information to the other vehicle-mounted device 21.

  The caution information is information around the vehicle 2 transmitted from the vehicle-mounted device 21 based on the judgment of the driver of the vehicle 2 on which the vehicle-mounted device 21 is mounted. This is information that indicates the content of attention that should be evoked.

  The usefulness is a numerical value indicating how useful the caution information transmitted from the in-vehicle device 21 of the transmission source is for the driver of the vehicle 2 in which the in-vehicle device 21 of the distribution destination is mounted. . In this embodiment, it shows that usefulness is so high that a numerical value is large.

  In the following, according to the explanation, the driver of the vehicle 2 on which the vehicle-mounted device 21 that is the distribution destination of the attention information is referred to as a distribution destination driver, and the vehicle-mounted device 21 that is the distribution destination of the attention information is the distribution destination. The vehicle 2 equipped with the vehicle-mounted device 21 is referred to as a delivery destination vehicle 2. In addition, the driver of the vehicle 2 in which the vehicle-mounted device 21 that is the transmission source of the caution information is mounted is referred to as a transmission source driver, and the vehicle-mounted device 21 that is the transmission source of the caution information is referred to as the transmission device of the vehicle-mounted device 21. The vehicle 2 on which the vehicle-mounted device 21 is mounted is referred to as a transmission source vehicle 2.

  In addition, the communication unit 11 receives the evaluation information transmitted from the on-vehicle device 21 that is the distribution destination, and outputs the evaluation information to the control unit 13. The evaluation information is an evaluation result of attention information by the delivery destination driver. In the present embodiment, one of the two-stage evaluations of whether the caution information is useful or not is transmitted as an evaluation result from the in-vehicle device 21 as the distribution destination. The evaluation results are not limited to those evaluated in two stages, and may be evaluated in three stages such as useful, not useful, or neither, and more stages. It may be evaluated by a number.

  The recording unit 12 includes a personal information database 121, a driving history database 122, a driver reliability database 123, and a shared information database 124. Hereinafter, the database is abbreviated as DB.

  In the personal information DB 121, a driver identification number for identifying the driver of the vehicle 2 on which the vehicle-mounted device 21 is mounted is recorded together with the identification number of the corresponding vehicle 2 (or the vehicle-mounted device 21). In the personal information DB 121, attribute information indicating attributes for a predetermined item for the driver represented by the driver identification number is recorded. Examples of the items include the following (1) to (4).

(1) Gender. Whether it belongs to male or female is recorded.
(2) Age. Whether it belongs to the teens, the 20s, the 30s, the 40s, the 50s, the 60s or more is recorded.

(3) Occupation. For example, whether it belongs to a police officer, a company employee in the automobile industry, other company employee, public employee, self-employed, student, housewife, unemployed, etc. is recorded.
(4) Transmission history. Which of the driver who has transmitted the caution information and the driver who has not transmitted the caution information is recorded.

  The items (1) to (4) shown here and the attributes shown for each item are merely examples, and other various items and attributes may be set. These pieces of attribute information are information registered in advance in the distribution server 1 by the driver of the vehicle 2 on which the vehicle-mounted device 21 is mounted. The driver accesses the distribution server 1 using, for example, the vehicle-mounted device 21 or a mobile device (mobile phone), a personal computer, etc., and registers attribute information in advance.

  The driving history DB 122 is a database in which the driving history of the vehicle 2 corresponding to the driver represented by the driver identification number is recorded. As items recorded as the operation history, the following (1) to (5) are given as an example. The items recorded as the driving history in the driving history DB 122 are not limited to these.

  (1) Travel history. For each vehicle 2 on which the driver represented by the driver identification number performs a driving operation, the traveling position of the vehicle 2, the time at which the vehicle was at the traveling position, the traveling state (speed, acceleration), etc. To be recorded. In the operation history DB 122, a travel history from the current time to a time that goes back for a predetermined recording time is recorded. The recording time may be set in units of minutes, hours, days, weeks, etc., for example.

  (2) Driving risk. For each driver represented by the driver identification number, the risk of driving operation by the driver is recorded. In the present embodiment, as an example, the driving risk level is classified and recorded in one of two levels: a high risk level and a low risk level in descending order of risk. As will be described later, the driving risk is calculated by the control unit 13 based on the travel history recorded in the operation history DB 122. The calculation result is overwritten in the operation history DB 122 every predetermined period.

  (3) Accident history. For each driver represented by the driver identification number, an accident history experienced by the vehicle 2 on which the driver performs a driving operation is recorded as an accident history. In the present embodiment, as an example, the accident history is classified and recorded as one of two cases of having or not having an accident.

  (4) Drought during operation. For each driver represented by the driver identification number, the variation in acceleration / deceleration during driving is recorded as driving habit. In the present embodiment, as an example, soot during driving (variation in acceleration / deceleration during driving operation) is classified and recorded as one of two cases where there are many sudden starts and few. In addition, for example, the variation in lateral acceleration / deceleration on a curved road may be recorded as an item indicating a wrinkle during driving.

  The driver reliability DB 123 is a database that records driver reliability for each driver represented by a driver identification number. The driver's reliability indicates a degree indicating that the driver represented by the driver identification number is a driver who provides credible attention information. In the present embodiment, as an example, the driver reliability is classified and recorded as either large or small. Specifically, it is assumed that a driver with no accident history has a high possibility of providing highly reliable information. Based on the driving history DB 122, a driver with no accident history has a high driver reliability. For a driver who is set and has an accident history, the driver's reliability is set small.

The shared information DB 124 is a database that accumulates the attention information received by the communication unit 11 and records it as a shared information group.
The control unit 13 includes a so-called microcomputer including a CPU 131, a ROM 132, a RAM 133, and the like.

  The control unit 13 executes a program recorded in the ROM 132, thereby executing a process for realizing a function of calculating a driving risk based on the traveling history recorded in the driving history DB 122 and recording it in the driving history DB 122. Run. The control unit 13 also includes a usefulness calculation process for realizing a function for calculating the usefulness for the attention information received by the communication unit 11, a distribution process for realizing a function for distributing the attention information together with the calculated usefulness, Execute.

[2. Processing procedure]
[2-1. Distribution process]
First, a specific processing procedure of distribution processing executed by the CPU 131 of the control unit 13 will be described with reference to the flowchart of FIG. The distribution process is a process that is repeatedly executed while the power of the distribution server 1 is input. In the following sentence, when the subject is omitted, the CPU 131 of the control unit 13 is the subject.

  First, in S (step) 1, it is determined whether or not attention information has been received from any vehicle 2. If attention information is received, the process proceeds to S2, and if not received, the distribution process is terminated.

  In S2 that is shifted when the attention information is received, it is determined whether or not it is a distribution timing. If it is not the distribution timing, the process waits until the distribution timing is reached, and if it is the distribution timing, the process proceeds to S3. The distribution timing is set after the timing (S35) at which the total usefulness for the received attention information is calculated at least in the usefulness calculating process described later.

In subsequent S3, the attention information received in S2 is acquired.
Next, in S4, the total usefulness that is the usefulness of the attention information is acquired. As described above, the total usefulness is a value calculated by a usefulness calculation process different from the main distribution process, which is executed in parallel with the main distribution process. The total usefulness is recorded in the RAM 133.

  Subsequently, in S5, distribution is performed. Specifically, the attention information acquired in S3 is distributed together with the total usefulness acquired in S4. In this embodiment, as an example, a predetermined range centered on the transmission source vehicle 2, for example, a range of several kilometers centered on the transmission source vehicle 2 is set as the distribution range, and the other vehicles 2 positioned within the distribution range. Is distributed as the vehicle 2 of the distribution destination. The distribution range is set in advance in a range where the effectiveness of the caution information is recognized according to the content of the caution information, that is, the caution content.

Next, in S6, it is determined whether or not the caution information and the total usefulness are to be redistributed. When the redistribution is not performed, the distribution processing is terminated, and when the redistribution is performed, the processing proceeds to S7.
In subsequent S7, when the update end flag is set in the later-described usefulness calculation process, the present distribution process is terminated. When the update end flag is not set, the process proceeds to S4, and the processes of S4 to S6 are performed. repeat. Here, when the second and subsequent distribution processes are performed (S7: NO), the latest total usefulness at that time is acquired from the RAM 133.

[2-2. Usefulness calculation processing]
Next, a specific processing procedure of usefulness calculation processing executed by the CPU 131 of the control unit 13 will be described with reference to the flowchart of FIG. The usefulness calculation process illustrated in FIG. 4 is a process that is repeatedly executed in parallel with the distribution process while the power of the distribution server 1 is input. In the following sentence, when the subject is omitted, the CPU 131 of the control unit 13 is the subject.

  First, in S10, it is determined whether or not attention information has been received from any of the vehicles 2. If attention information has been received, the process proceeds to S15, and if not, the usefulness calculation process is terminated.

In S15 that is shifted to when the attention information is received, the attention information received in S10 is acquired. In this step, the update flag is reset.
Next, in S20, a multiple sighting usefulness calculation process is executed. In the multiple sighting usefulness calculation process, the usefulness of the attention information received in S10 is determined based on whether or not information indicating the sameness as the received attention information has already been received before the attention information is received. Calculated. The calculated usefulness is recorded as a multiple sighting usefulness.

  In continuing S25, a behavior tendency usefulness calculation process is performed. In the behavior tendency usefulness calculation process, the usefulness of the attention information is calculated based on the behavior tendency of the driver of the attention information received in S10. The calculated usefulness is recorded as a behavior tendency usefulness.

  Next, in S30, objective usefulness calculation processing is executed. In the objective usefulness calculation process, the usefulness of the caution information is calculated based on the degree of coincidence between the caution information received in S10 and the detection result by the in-vehicle sensor in the vehicle 2 that is the transmission source of the caution information. . The calculated usefulness is recorded as an objective usefulness.

  In subsequent S35, a value obtained by adding the multiple sightings usefulness calculated in S20, the behavior tendency usefulness calculated in S25, and the objective usefulness calculated in S30 is calculated as the total usefulness and recorded in the RAM 133.

  In subsequent S40, after the total usefulness is calculated in S35, it is determined whether or not new attention information indicating the sameness as the attention information is received from another vehicle 2. If new attention information indicating the identity is received, the process proceeds to S45, and if not received, the process proceeds to S55.

  In S45, a correction usefulness degree calculation process is executed. In the corrected usefulness calculation process, the corrected usefulness is calculated and recorded so as to be a large value when information indicating identity is received after the attention information is distributed.

  In subsequent S50, the total usefulness is updated. Specifically, a value obtained by adding the corrected usefulness calculated in S <b> 45 to the total usefulness currently recorded in the RAM 133 is calculated as a new total usefulness, and the total usefulness is recorded in the RAM 133.

  Next, in S55, it is determined whether evaluation information has been received from the delivery destination vehicle 2 or not. The evaluation information is information transmitted from the distribution destination vehicle 2 after the attention information is distributed together with the total usefulness from the transmission source vehicle 2 to the distribution destination vehicle 2 by distribution processing. Information. If the evaluation information is received, the process proceeds to S60. If the evaluation information is not received, the process proceeds to S70.

  In S60 that is shifted to when the evaluation information is received, an evaluation usefulness calculation process is executed. In the evaluation usefulness calculation process, the usefulness of the attention information is calculated and recorded based on the received evaluation information.

  In S65, the total usefulness is updated. Specifically, a value obtained by adding the evaluation usefulness calculated in S60 to the total usefulness calculated in S35 or S50 is calculated as a new total usefulness, and the total usefulness is recorded in the RAM 133. .

  Next, in S70, it is determined whether or not the update period has elapsed. If the update period has elapsed, the process proceeds to S75. If the update period has not elapsed, the process proceeds to S40, and a series of processes is repeated. The update period is a predetermined period for updating the total usefulness of the attention information received in S10.

In S75, which is shifted to when the notice information update period has elapsed, an update end flag is set, and the usefulness calculation process ends.
[2-2-1. Multiple eyewitness usefulness calculation process]
Next, the multiple sighting usefulness calculation process executed in S20 of the usefulness calculation process will be described with reference to the flowchart of FIG.

  In S110, it is determined whether or not the transmission source driver is the driver who transmitted the attention information for the first time. When the transmission source driver is the driver who transmitted the attention information for the first time, the process proceeds to S120, and when the transmission source driver is the driver who has transmitted the attention information, the process proceeds to S130. Specifically, based on the transmission history recorded in the personal information DB 121, it is determined whether or not the transmission source driver represented by the driver identification number is the driver who transmitted the attention information for the first time.

  In S120, which is a transition to the case where the transmission source driver is the driver who transmitted the caution information for the first time, the usefulness initial value, which is the initial value of the usefulness previously recorded in the ROM 132, is recorded in the RAM 133 as the multiple witness usefulness. This multi-witness usefulness calculation process is terminated.

  In S130, which is shifted to the case where the transmission source driver is a driver who has transmitted attention information, the usefulness corresponding to the driver's creditworthiness of the transmission source driver is calculated. Is recorded in the RAM 133. Specifically, the driver reliability corresponding to the driver identification number is acquired from the driver reliability DB 123, and the usefulness corresponding to the acquired driver reliability is calculated. Here, when the driver credit is set to be large, the usefulness is calculated to be a larger numerical value than when the driver credit is set to be small.

  In subsequent S140, it is determined whether or not the attention information received in S10 is already shared. If it has already been shared, the process proceeds to S150, and if it has not been shared, the multiple sightings usefulness calculation process ends. Specifically, the previous (previous) attention information that is identical to the attention information received in S10 is valid from the time when the attention information is received in S10. If it is recorded and exists in the shared information DB 124 up to the time that has gone back in time, it is determined that the attention information received in S10 has already been shared.

  Hereinafter, the time when the attention information is valid is referred to as information valid time. Further, the caution information indicating the same caution content, that is, the caution information indicating the same content for the same object is referred to as caution information indicating the identity. For example, when the caution information received in S10 is the caution content that “the red vehicle is traveling at a speed significantly exceeding the statutory speed”, the information for the “red vehicle” in the shared information DB 124 And there is information indicating that the red vehicle is “running at a speed significantly exceeding the legal speed” or “runaway”, it is determined that the attention information is already shared.

  The above-described information valid time is a predetermined value and varies depending on the content of attention. For example, if the caution information is “The red vehicle is traveling at a speed significantly exceeding the legal speed”, the driving state of the car may change in a short time. The information valid time is set shorter than when the content is that the traffic light is broken.

  In S150 which shifts when the caution information is already shared, between the vehicle 2 that transmitted the caution information indicating the identity first (in the past) and the vehicle 2 that transmitted the caution information received in S10. Calculate the distance. Specifically, based on the driving history DB 122, the current position between the vehicle 2 that has transmitted the information indicating the identity first and the vehicle 2 that is the transmission source is acquired, and the distance between these vehicles is calculated.

  In subsequent S160, a correction value for the usefulness of multiple sightings is calculated. Specifically, the driver reliability of the driver of the vehicle 2 that previously transmitted the information indicating the identity is acquired from the driver reliability DB 123, and the usefulness corresponding to the driver reliability is calculated by the distance calculated in S150. The division value is used as the correction value. That is, the correction value becomes larger as the distance from the transmission source vehicle 2 to the vehicle 2 that has transmitted the information indicating the identity first is shorter.

  In subsequent S170, a value obtained by adding the correction value calculated in S160 to the usefulness set in S130 is calculated as the multiple witness usefulness. If other caution information indicating the identity is recorded in the shared information DB 124, the processing of S140 to S170 is repeatedly executed, and if not recorded, the multiple sighting usefulness calculation processing is terminated.

  That is, in this multiple sighting usefulness calculation process, when attention information is newly received, when information indicating the same as the attention information is received first, the information indicating the first received identity The greater the number of, and the closer the distance to the vehicle that transmitted the attention information earlier, the greater the usefulness of the newly transmitted attention information. This idea is an idea that, when a plurality of pieces of sighting information are listed at closer positions, the credibility of the sighting information is highly evaluated.

[2-2-2. Behavior tendency usefulness calculation processing]
Next, the behavior tendency usefulness calculation process executed in S25 of the usefulness calculation process will be described with reference to the flowchart of FIG.

  First, in S210, the usefulness corresponding to safety is calculated. The usefulness corresponding to the safety is calculated as a larger value when the safety in the driving operation tendency by the transmission source driver is high than when the safety is low. Specifically, the usefulness corresponding to safety is calculated based on the driving risk and the accident history recorded in the driving history DB 122. In the present embodiment, as an example, when the driving risk recorded in the driving history DB 122 is a low risk and there is no accident history, the maximum usefulness according to safety is calculated as the driving history. When the driving danger level recorded in the DB 122 is high and the accident history is present, the usefulness level corresponding to the safety is calculated as the smallest value.

  Next, in S220, the usefulness corresponding to the similarity is calculated. The usefulness corresponding to the similarity is calculated as a larger value when the similarity in the behavior between the transmission source driver and the delivery destination driver is estimated to be higher than when the similarity is estimated to be low. . Specifically, for the transmission source driver and the distribution destination driver, the higher the degree of matching of the attributes of each item recorded in the personal information DB 121, the greater the degree of usefulness corresponding to the similarity. The In addition, for the transmission source driver and the distribution destination driver, the higher the degree of coincidence of driving habits recorded in the driving history DB 122, the higher the degree of usefulness according to similarity.

  In subsequent S230, a value obtained by adding the usefulness corresponding to the safety calculated in S210 and the usefulness corresponding to the similarity calculated in S220 is calculated as the behavior tendency usefulness. And this action tendency usefulness calculation process is complete | finished.

  In other words, in the behavior tendency usefulness calculation process, if the transmission source driver is a driver who has a large tendency to take a safe behavior in the driving operation of the vehicle, useful information about the vehicle that poses a danger to other drivers is displayed. The usefulness of the caution information with a driver having a high tendency to take a safe action as a sender is calculated.

  In addition, it is considered that drivers having similar behavior in driving tend to have similar subjective perception tendencies regarding the content of attention that should “call attention of drivers of other vehicles”. That is, it is considered that drivers having similar driving behaviors have similar subjective perception trends regarding what kind of caution information they feel is useful. Therefore, in the behavior tendency usefulness calculation process, the higher the degree of matching of the attributes of each item such as gender, age, occupation, driving tendency, etc., the higher the similarity of behavior tendency in driving, and the matching of the attributes of each item The higher the degree is, the greater the usefulness corresponding to the similarity is calculated.

[2-2-3. Objective Usefulness Calculation Processing]
Next, the objective usefulness calculation process executed in S30 of the usefulness calculation process will be described with reference to the flowchart of FIG.

  In S310, a sensor detection result is acquired. Specifically, a detection result around the transmission source vehicle 2 is acquired by various sensors such as a camera, a laser radar, and a vehicle speed sensor mounted on the transmission source vehicle 2 that transmitted the attention information.

  In S320, it is determined whether or not the sensor detection result acquired in S310 matches the caution information. If they match (S320; YES), the process proceeds to S330, and if they do not match, the process proceeds to S350. Specifically, in the detection results detected by the various sensors mounted on the transmission source vehicle 2, when the target of the attention information is detected in the same manner as the attention content, the sensor detection result and the attention information are displayed. Judge that they match. For example, when the caution information is “a red vehicle is traveling at a speed significantly exceeding the legal speed”, the red vehicle is detected by various sensors mounted on the transmission source vehicle 2, and An affirmative determination is made when it is detected that the red vehicle is traveling at a speed exceeding the court speed by more than a predetermined speed.

In S350 that is shifted when the sensor detection result and the attention information do not coincide with each other, 0 is recorded as a numerical value of the objective usefulness, and the objective usefulness calculation process is ended.
In S330, which is shifted to when the sensor detection result and the caution information coincide with each other, the usefulness corresponding to the danger of the target of the caution information is calculated. For example, if the caution information is “the red vehicle is traveling at a speed significantly exceeding the legal speed”, the greater the degree that the speed of the red vehicle exceeds the court speed, the more dangerous It is calculated as a value having a large usefulness according to.

In subsequent S340, the usefulness corresponding to the risk calculated in S330 is recorded as an objective usefulness, and the objective usefulness calculating process is terminated.
In other words, in the objective usefulness calculation process, attention information is objectively viewed by looking at the degree of coincidence between the subjective recognition result of the sender driver, which is the attention information, and the objective recognition result, which is the sensor detection result. In other words, it is judged whether it is useful. Further, when the caution information and the sensor detection result coincide with each other and the risk of the target in the caution information is large, a larger value is calculated as the usefulness, assuming that the information is highly useful.

[2-2-4. Corrected usefulness calculation process]
Next, the corrected usefulness calculation process executed in S45 of the usefulness calculation process will be described with reference to the flowchart of FIG.

  In S410, it is determined whether or not information indicating the same identity as the attention information received in S10 is newly shared. If it is newly shared (S410; YES), the process proceeds to S420. If it is not newly shared, the process proceeds to S440. Specifically, when attention information is newly transmitted from the other vehicle 2, an affirmative determination is made when the newly transmitted attention information is identical to the attention information received in S10.

In S440, which is shifted to when information indicating the identity is not newly shared, 0 is recorded as the numerical value of the correction usefulness, and the correction usefulness calculation processing is terminated.
In S420, which is shifted when information indicating identity is newly shared, the distance between the vehicle 2 that newly transmitted the information and the vehicle 2 that is the transmission source is calculated based on the driving history DB 122.

  In subsequent S430, a value obtained by dividing the driver reliability of the driver in the vehicle 2 that has newly transmitted the information by the distance calculated in S420 is calculated as the usefulness of correction. And this correction usefulness degree calculation process is complete | finished.

  In other words, in the corrected usefulness calculation processing, when new attention information that is identical to the attention information is shared, a larger numerical value is obtained when the distance from the vehicle that is the transmission source of the new attention information is short. Calculate usefulness. If sighting information indicating the identity is listed nearby, this means that the credibility of the sighting information is high.

[2-2-5. Evaluation usefulness calculation processing]
Next, the evaluation usefulness calculation process executed in S60 of the usefulness calculation process will be described with reference to the flowchart of FIG.

  In S510, it is determined whether or not the distributed attention information has been evaluated. If it is evaluated (S510; YES), the process proceeds to S520. If it is not evaluated, the process waits until it is evaluated. Specifically, when the communication unit 11 receives evaluation information from the delivery destination vehicle 2, an affirmative determination is made.

In S520, which is shifted when the distributed information is evaluated, the distance between the distribution destination vehicle 2 that transmitted the evaluation information and the transmission source vehicle 2 is calculated based on the driving history DB 122.
In subsequent S530, a value obtained by dividing the driver reliability of the driver in the distribution destination vehicle 2 that has transmitted the evaluation information by the distance calculated in S520 is calculated as the usefulness.

  Next, in S540, it is determined whether or not the distributed attention information is evaluated as useful in the evaluation information. If it is evaluated as useful, the process proceeds to S550, and if it is evaluated as not useful, the process proceeds to S560.

In S550 to which the process proceeds when it is evaluated as useful, the usefulness calculated in S530 is recorded as the evaluation usefulness, and the evaluation usefulness calculation process is terminated.
In S560, which is shifted to a case where it is evaluated that the evaluation is not useful, a negative numerical value obtained by inverting the sign of the usefulness calculated in S530 is recorded as the evaluation usefulness, and the evaluation usefulness calculation processing is ended.

  In other words, in the evaluation usefulness calculation process, the weighting of the evaluation information from the delivery destination vehicle 2 that is close to the transmission source vehicle 2 is set to be larger than the evaluation information from the delivery destination vehicle 2 that is far away from the transmission destination vehicle 2, Calculate usefulness.

[3. Action]
Next, the operation of the distribution server 1 will be described based on FIG.
For example, it is assumed that the vehicle 4 shown in FIG. 10 is a red vehicle and is traveling at a speed exceeding the legal speed. Then, from the vehicle-mounted device 21 of the vehicle 2A on which the driver who witnessed the red vehicle 4 performs the driving operation, the red vehicle 4 makes a dangerous driving at a speed significantly exceeding the legal speed for the red vehicle 4. Suppose that the caution information of the caution content is transmitted to the distribution server 1. Here, the caution content of “significantly exceeded” and “dangerous” is based on the subjectivity of the driver of the transmission source vehicle 2A. Note that the caution information includes information related to the target of the caution information such as the number, vehicle type, and color of the red vehicle 4, and information related to the transmission source vehicle 2 such as the position, speed, and transmission time of the caution information. May be included.

  When the vehicle 2B and the vehicle 2C are located in the distribution range, the distribution server 1 that has received the caution information receives the caution information received from the vehicle 2A and the drivers of the vehicles 2B and 2C. The total usefulness calculated in accordance with this is distributed. The distribution information may include the number of the red vehicle 4, the vehicle type, the color, the position, the speed, the transmission time of the attention information, and the like.

  After the delivery, for example, the driver of the vehicle 2B witnesses the red vehicle 4 running away, and the red vehicle 4 greatly exceeds the legal speed from the vehicle-mounted device 21B of the vehicle 2B that the driver performs the driving operation. When new caution information about the caution content that the vehicle is driving at a dangerous speed is transmitted to the distribution server 1, that is, when information indicating the identity is transmitted to the distribution server 1, the distribution server 1 The notice information transmitted from 2A is redistributed with the updated total usefulness.

[4. effect]
According to the embodiment detailed above, the following effects can be obtained.
[4A] In the control unit 13, when the caution information indicating the identity is transmitted from a plurality of drivers, the usefulness of the caution information is calculated to be high. In other words, when the attention content is witnessed by a plurality of drivers, the usefulness that is the evaluation value is calculated with the attention value indicating that the attention information indicating the attention content is high in reliability. It can be calculated appropriately for the driver of the distribution destination who is the user of the information.

  [4B] In the control unit 13, the information that is identical to the caution information is shared information between the time when the caution information is received and the time that is a predetermined time that is predetermined based on the caution content of the caution information. When it exists in the shared information group recorded by the group recording means, the usefulness is calculated to be high. The predetermined time is set to a time when the attention information is valid. For example, if the caution information relates to a vehicle traveling on a highway significantly exceeding the legal speed, the behavior of the vehicle is expected to change in a short time. And so on. According to this, when the same attention content has been witnessed in the past, the usefulness is calculated as the reliability of the attention information indicated by the attention content is high. It can be calculated appropriately for the driver of the distribution destination who is the user of the attention information.

  [4C] The control unit 13 performs distribution from the transmission source vehicle 2 to the vehicle-mounted device 21 mounted on another vehicle 2 existing at a predetermined distance based on the caution content of the caution information. The predetermined distance is set to a distance where the attention information is effective. For example, if the caution information relates to a vehicle traveling on a highway significantly exceeding the legal speed, the behavior of the vehicle is expected to change in a short time. The predetermined distance is the distance that can be traveled. According to this, in order to distribute the caution information with the other vehicle 2 existing near the transmission source vehicle 2 in the same time zone as the distribution destination vehicle 2, the transmission source vehicle in the same time zone. Compared with the case where attention information is distributed including other vehicles 2 located far from 2, information with high real-time property, that is, information with high utility can be distributed.

  [4D] The control unit 13 is based on transmission source driver information that is driver information about the transmission source driver that transmitted the attention information, and distribution destination driver information that is driver information about the distribution destination driver. Thus, before the attention information is distributed, when the degree of similarity between the transmission source driver information and the distribution destination driver information is high, the degree of usefulness is calculated higher than when the degree of similarity is low. It is considered that drivers who have a high degree of similarity, that is, similar drivers, have similar subjective perceptions about the content of attention. According to this, since the usefulness is calculated to be high when the degree of similarity is high according to the driver of the delivery destination, the usefulness that is the evaluation value is set as the driver of the delivery destination who is the user of the attention information. Can be calculated appropriately.

  [4E] The driver information may be information indicating a driving tendency based on the driving history of the vehicle by the driver, for example. It is considered that drivers who have similar driving histories, in other words, driving tendencies, have similar subjective perceptions about caution content. According to this, the usefulness that is the evaluation value can be appropriately calculated for the driver of the distribution destination who is the user of the attention information.

  [4F] The driver information may be individual driver information such as gender, age, occupation, and the like. It is thought that drivers who have similar gender, age, occupation, etc. have similar subjective perceptions about the content of attention. According to this, the usefulness that is the evaluation value can be appropriately calculated for the driver of the distribution destination who is the user of the attention information.

  [4G] When the caution information and the detection results around the transmission source vehicle 2 detected by the various sensors included in the transmission source vehicle 2 that is the transmission source of the caution information indicate the same, Usefulness is calculated to be higher than when identity is not shown. According to this, when the caution information is objectively correct based on the degree of coincidence between the subjective recognition result of the sender driver, which is the caution information, and the objective recognition result, which is the detection result of the sensor. Since the usefulness is calculated to be high, the usefulness that is the evaluation value can be appropriately calculated for the driver of the delivery destination who is the user of the attention information.

  [4H] The control unit 13 calculates a high degree of usefulness of the distributed attention information when the communication unit 11 newly receives information indicating the sameness as the distributed attention information after the attention information is distributed. Make corrections. According to this, since the usefulness is calculated high when the attention content is recognized by a plurality of drivers, the usefulness that is the evaluation value is appropriate for the driver of the distribution destination who is the user of the attention information. Can be calculated.

  [4I] When the control unit 13 receives the evaluation information indicating the evaluation of the distributed attention information from the vehicle-mounted device 21 mounted on the distribution destination vehicle 2, the control unit 13 corrects the usefulness according to the evaluation. According to this, the usefulness that is the evaluation value can be appropriately calculated for the driver of the distribution destination who is the user of the attention information.

  In the present embodiment, the distribution server 1 corresponds to an example of an information distribution device, and the vehicle-mounted device 21 corresponds to an example of a communication device. Further, the communication unit 11 corresponds to an example as an information receiving unit and a distribution unit, the recording unit 12 corresponds to an example as a shared information group recording unit and a driver information recording unit, and the control unit 13 calculates a useful degree. It corresponds to an example of means, multiple sighting usefulness calculating means, similar usefulness calculating means, result usefulness calculating means, corrected usefulness calculating means, and evaluation usefulness calculating means. Various sensors such as a camera, a laser radar, and a vehicle speed sensor mounted on the vehicle 2 correspond to an example of a detection device. Further, S20 corresponds to an example of processing as a multiple sighting usefulness calculating unit, S25 corresponds to an example of processing as a similar usefulness calculating unit, and S30 corresponds to an example of processing as a result usefulness calculating unit. . Further, S45 corresponds to an example of processing as a corrected usefulness degree calculation unit, and S60 corresponds to an example of processing as an evaluation usefulness level calculation unit.

[5. Other Embodiments]
As mentioned above, although embodiment of this invention was described, it cannot be overemphasized that this invention can take a various form, without being limited to the said embodiment.

  [5A] In the above embodiment, the driver reliability is calculated based on the accident history regardless of the delivery destination driver, but is not limited thereto. Since the determination as to how much the provided attention information can be trusted is based on the subjectivity of the delivery destination driver, the driver reliability of a certain source driver may be set for each delivery destination driver. . For example, for the transmission source driver represented by the driver identification number, the driver reliability for each of the delivery destination drivers represented by the driver identification number may be recorded in the driver reliability DB 123. .

  [5B] In the above embodiment, in the distribution process, the distribution of the caution information and the usefulness level is repeated until the update end flag is set. However, the distribution timing is not limited to this. For example, re-distribution of attention information and usefulness may not be performed in the distribution process. Further, for example, in the distribution process, the distribution may be performed when a predetermined timing signal is detected.

  [5C] For example, the vehicle subject to the caution content, such as the red vehicle 4 in FIG. 10, may be a vehicle not equipped with the vehicle-mounted device 21 or the vehicle 2 equipped with the vehicle-mounted device 21. May be.

  [5D] In the above embodiment, the content that the vehicle is traveling significantly exceeding the legal speed is given as the content of caution, but the content of caution is not limited to this. For example, the content may indicate a vehicle that travels with a risk of danger to other vehicles, such as traveling with an unreasonable lane change. Moreover, the content which shows the event which influences driving | running | working of other vehicles, such as the failure of a traffic signal, for example may be sufficient.

[5E] The transmission destination vehicle 2 may be included in the distribution destination of the caution information and the usefulness.
[5F] The functions of one component in the embodiment may be distributed as a plurality of components, or the functions of a plurality of components may be integrated into one component. Further, at least a part of the configuration of the above embodiment may be replaced with a known configuration having the same function. Moreover, you may abbreviate | omit a part of structure of the said embodiment as long as a subject can be solved. In addition, at least a part of the configuration of the above embodiment may be added to or replaced with the configuration of the other embodiment. In addition, all the aspects included in the technical idea specified from the wording described in the claims are embodiments of the present invention.

  [5F] The present invention is realized in various forms such as the distribution server 1 and the control unit 13 described above, a program for causing the control unit 13 to function, a medium on which the program is recorded, a usefulness calculation method, and the like. Can do.

  DESCRIPTION OF SYMBOLS 1 ... Distribution server 2 ... Vehicle 11 ... Terminal communication part 12 ... Recording part 13 ... Control part 21 ... Onboard equipment 121 ... Personal information DB 122 ... Driving history DB 131 ... CPU.

Claims (13)

The caution information that is transmitted from the communication device (21) mounted on the vehicle and is based on the judgment of the driver of the vehicle and around the vehicle, the caution information indicating the caution content that should alert other drivers. Information receiving means (11) for receiving;
A shared information group recording means (12) for accumulating the attention information received by the information receiving means and recording it as a shared information group;
Usefulness calculating means (13) for calculating usefulness which is a numerical value indicating the usefulness of the attention information;
Distribution means for distributing the caution information received by the information reception means together with the usefulness calculated by the usefulness calculation means to at least the communication device mounted in another vehicle via a wireless communication network ( 11) and
With
The usefulness calculating means includes a plurality of sighting usefulness values indicating whether or not information indicating the same information as the caution information is received, a driver of the caution information transmission source and a driver of the caution information distribution destination At least one of a behavior tendency usefulness level representing the degree of similarity and an objective usefulness level representing numerically the presence / absence of coincidence between the attention information and a detection result of a detection device included in a vehicle that is the transmission source of the attention information One on the basis, said information delivery apparatus characterized by leaving calculate the usefulness (1). The information distribution device according to claim 1,
The usefulness calculating means determines whether or not information indicating the identity with the newly received attention information exists in the shared information group recorded by the shared information group recording means, and the newly received information When the information indicating the same as the caution information is present in the shared information group recorded by the shared information group recording unit, the information indicating the same as the caution information is recorded by the shared information group recording unit. was than if not present in the shared information group, more witness useful degree calculating means for increasing calculates the plurality witnessed usefulness (13, S20),
An information distribution apparatus (1) comprising: The caution information that is transmitted from the communication device (21) mounted on the vehicle and is based on the judgment of the driver of the vehicle and around the vehicle, the caution information indicating the caution content that should alert other drivers. Information receiving means (11) for receiving;
A shared information group recording means (12) for accumulating the attention information received by the information receiving means and recording it as a shared information group;
Usefulness calculating means (13) for calculating usefulness which is a numerical value indicating the usefulness of the attention information;
Distribution means for distributing the caution information received by the information reception means together with the usefulness calculated by the usefulness calculation means to at least the communication device mounted in another vehicle via a wireless communication network ( 11) and
With
The usefulness calculating means is a means for calculating, as the usefulness, a multiple sighting usefulness that represents the presence or absence of reception of information indicating the sameness as the attention information, and is the same as the newly received attention information It is determined whether or not the information indicating sex exists in the shared information group recorded by the shared information group recording means, and the information indicating the identity with the newly received attention information is determined by the shared information group recording means. When present in the recorded shared information group, the multiple sightings usefulness is higher than in the case where information indicating identity with the attention information is not present in the shared information group recorded by the shared information group recording means. Multiple sighting usefulness calculating means (13, S20) for calculating high,
An information distribution apparatus (1) comprising: An information distribution apparatus according to claim 2 or claim 3, wherein
  The multiple sighting usefulness calculating means has a high driver reliability based on a driver reliability that is a degree indicating that the driver who transmits the caution information is a driver who provides reliable information. If the driver's creditworthiness is small, calculate the multiple sightings usefulness higher
  An information distribution apparatus characterized by that.   The information distribution device according to claim 4,
  The driver's reliability is set larger for a driver who has no accident history than a driver who has an accident history.
  An information distribution apparatus characterized by that. An information distribution apparatus according to any one of claims 2 to 5 ,
The multiple sighting usefulness calculating means is configured such that the information indicating the same as the caution information is from a time when the caution information is received to a time that is a predetermined time that is predetermined based on the caution content of the caution information. The information distribution apparatus characterized in that, when the shared information group recorded by the shared information group recording means is present in between, the multiple sightings usefulness is calculated high. The information distribution device according to any one of claims 1 to 6 ,
The distribution means is a communication mounted on the other vehicle existing at a predetermined distance based on the attention content of the attention information from the vehicle on which the communication device to which the attention information is distributed is mounted. An information distribution device characterized by performing distribution to a device. The information distribution device according to any one of claims 1 to 7 ,
Driver information recording means (12) for recording driver information about a driver of a vehicle equipped with the communication device.
With
The usefulness calculating means is a means for calculating, as the usefulness, a behavior tendency usefulness that expresses a degree of similarity between the driver of the attention information transmission source and the driver of the attention information distribution destination by a numerical value. , Transmission source driver information that is driver information about a driver of a vehicle on which the communication device that transmitted the attention information is mounted, and the communication device that is the distribution destination of the attention information and the usefulness by the distribution unit. When the degree of similarity between the transmission source driver information and the distribution destination driver information is high based on the distribution destination driver information that is driver information about the driver of the mounted vehicle, the transmission source driving Similarity usefulness calculating means (13, S25) for calculating the behavior tendency usefulness higher than when the degree of similarity between the operator information and the delivery destination driver information is low
An information distribution apparatus comprising: The information distribution device according to claim 8 , wherein
The information distribution apparatus, wherein the driver information is information indicating a driving tendency based on a driving history of the vehicle by the driver. The information distribution device according to claim 8 or 9 , wherein
The information distribution apparatus, wherein the driver information is personal information of the driver. The information distribution device according to any one of claims 1 to 10 ,
Detection result acquisition means (S310) for acquiring a detection result around the vehicle detected by a detection device included in the vehicle on which the communication device is mounted.
With
The usefulness calculating means is a means for calculating, as the usefulness, an objective usefulness that expresses numerically the presence / absence of coincidence between the attention information and a detection result of a detection device provided in a vehicle that is the transmission source of the attention information. the warning information and the detection result of the vehicle periphery which is detected by the detection device included in the said vehicle by the communication device that transmitted the attention information is mounted is determined whether indicating the identity, identity Result usefulness calculating means (13, S30) for calculating the objective usefulness higher than when not showing identity.
An information distribution apparatus comprising: The information distribution device according to any one of claims 1 to 11 ,
After the attention information received by the information receiving means is distributed by the distribution means, it is determined whether or not information indicating the sameness as the distributed attention information is newly received by the information receiving means. Corrected usefulness calculation means (13, S45) for performing correction to calculate the usefulness of the distributed attention information high when newly received
An information distribution apparatus comprising: The information distribution device according to any one of claims 1 to 12 ,
After the attention information received by the information receiving means has been distributed by the distribution means, whether or not evaluation information indicating an evaluation of the distributed attention information has been received from a communication device mounted on another vehicle. Evaluation usefulness calculating means for correcting the usefulness according to the evaluation when judging and receiving the evaluation information (13, S60)
An information distribution apparatus comprising: