JP2005235194A - System, server, method and program for sharing information - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system for sharing information, etc. capable of deleting information whose utility value is lost in real time without taking a trouble for deleting it and providing the latest information with high reliability of freshness. <P>SOLUTION: The system for sharing information is provided with: an onboard information terminal 100 which transmits at least one piece of information between vehicle information regarding own vehicle and onboard program information for acquiring shared information useful for travel of a vehicle; an area information acquisition device 101 which acquires area information such as information about a travel path of the vehicle; and an information sharing server 102 which calculates time function existing amount by a time function based on at least one piece of information between the vehicle information and the area information, calculates time function transmitting amount by the time function including the calculated time function existing amount, arranges the calculated time function existing amount and time function transmitting amount at corresponding positions on a segmented map, attaches map information in which the time function existing amount and the time function transmitting amount are arranged to the onboard program information and transmits the map information to the onboard information terminal. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an information sharing system, an information sharing server, an information sharing method, and an information sharing program that can share information among a plurality of users.

A conventional information sharing system for sharing information provides information obtained from a plurality of users and information obtained from the outside to other users, and the obtained information is stored in a predetermined storage area. Have been accumulated. A conventional system for sharing information as described above is disclosed in Patent Document 1 below.
JP 2002-245212 (paragraph 0008)

  However, in the system as disclosed in Patent Document 1, the obtained information is accumulated in a predetermined storage area, but this accumulated information is not necessarily required information, that is, information that is no longer useful. Often. Accumulating information whose use value is lost is a waste of resources. In order to eliminate this wasteful use of resources, there are problems such as deleting information accumulated regularly or irregularly but requiring time, and problems that information that is no longer useful can be deleted in real time. is there. That is, there is a problem that information with low reliability of information freshness continues to be accumulated.

  The present invention is intended to solve the above-described problem, and can provide information that can be deleted in real time without trouble of deleting information that is no longer useful, and can provide the latest and highly reliable information. An object is to provide an information sharing system, an information sharing server, an information sharing method, and an information sharing program.

  In order to achieve the above object, according to the present invention, at least one or more pieces of information among vehicle information relating to own vehicle and in-vehicle program information for acquiring shared information useful for traveling of the vehicle. Vehicle information terminal mounted on the vehicle for transmitting the vehicle, region information acquisition device for acquiring region information which is information on the travel route of the vehicle and the traffic volume around the travel route, and the vehicle received from the vehicle information terminal Based on the information and at least one of the region information received from the region information acquisition device, the vehicle abundance is acquired, and a time function abundance is calculated based on the time function including the acquired abundance. Calculating a time function transmission amount that is transmitted to an adjacent region as time passes by the time function including the calculated time function existence amount, and calculating the time function existence amount And when the in-vehicle program information is received from the in-vehicle information terminal, the time function transmission amount and the time function transmission are transmitted to the in-vehicle program information. An information sharing system is provided that includes an information sharing server that attaches map information of the map in which an amount is arranged and transmits the map information to the in-vehicle information terminal. Here, the in-vehicle information terminal may be a mobile information terminal such as a mobile phone terminal or a PDA (Personal Digital Assistant) terminal.

  Further, in the information sharing system of the present invention, the region information includes information on an exhaust gas abundance and traffic volume of pedestrians and other people, and the information sharing server receives the vehicle information received from the in-vehicle information terminal and the vehicle information Based on at least one piece of information among the region information received from the region information acquisition device, a vehicle presence amount or a human, vehicle, exhaust gas presence amount is acquired, and a time function including the acquired presence amount is obtained. It is a preferred aspect of the present invention to calculate the time function abundance according to.

  Further, according to the present invention, at least one or more information of vehicle information relating to a vehicle from outside and vehicle-mounted program information for acquiring shared information useful for traveling of the vehicle, and traveling of the vehicle The presence of a vehicle based on at least one of the receiving information and the vehicle information received by the receiving means and the area information, which is area information that is traffic volume information around the road and the running road Time to acquire a quantity, calculate a time function abundance by a time function including the acquired abundance, and transmit to a neighboring region as time passes by the time function including the calculated time function abundance A calculating means for calculating a function transfer amount, and the time function existence amount and the time function transfer amount calculated by the calculating means are arranged at corresponding positions on the subdivided map. When the vehicle program information is received by the placement unit and the reception unit, the map information of the map on which the time function existence amount and the time function transmission amount are arranged by the arrangement unit is attached to the vehicle program information There is provided an information sharing server comprising: means; and transmitting means for transmitting the in-vehicle program information to which the map information is attached by the attachment means to the outside.

  In the information sharing server of the present invention, the receiving means includes at least one or more of vehicle information related to a vehicle and vehicle-mounted program information for acquiring shared information useful for traveling of the vehicle from the outside. Information and area information, which is information on the traffic path of the vehicle and the traffic volume around the travel path, exhaust gas abundance and traffic volume of pedestrians and other people, and the calculation means is received by the reception means. Based on at least one or more of the vehicle information and the area information, a vehicle presence amount or a human, vehicle, exhaust gas presence amount is acquired, and a time according to a time function including the acquired presence amount is acquired. It is a preferable aspect of the present invention to calculate the function abundance.

  Further, according to the present invention, at least one or more information of vehicle information relating to a vehicle from outside and vehicle-mounted program information for acquiring shared information useful for traveling of the vehicle, and traveling of the vehicle A step of receiving area information, which is information of traffic volume around the road and the road, and acquiring the vehicle abundance based on at least one or more of the received vehicle information and the area information; A time function abundance is calculated based on the time function including the acquired abundance, and a time function transfer amount that is transmitted to an adjacent region as time passes is calculated based on the time function including the calculated time function abundance. Disposing the calculated time function existence amount and the time function transmission amount at a corresponding position on the subdivided map; and When receiving information, attaching the map information of the map in which the time function existence amount and the time function transfer amount are arranged to the in-vehicle program information; and the in-vehicle program information to which the map information is attached An information sharing method comprising the step of transmitting to the outside is provided.

  Further, in the information sharing method of the present invention, in the receiving step, at least one or more of vehicle information related to the vehicle and vehicle-mounted program information for acquiring shared information useful for traveling of the vehicle from the outside. And the area information which is the information on the road of the vehicle and the traffic volume around the road, the exhaust gas abundance and the traffic volume of pedestrians and other persons, and received in the step of calculating Based on at least one of the vehicle information and the region information, the vehicle existence amount or the existence amount of the person, the vehicle, and the exhaust gas is obtained, and the time function by the time function including the obtained existence amount is obtained. Calculating the amount is a preferred embodiment of the present invention.

  Further, according to the present invention, at least one or more information of vehicle information relating to a vehicle from outside and vehicle-mounted program information for acquiring shared information useful for traveling of the vehicle, and traveling of the vehicle A step of receiving area information, which is information of traffic volume around the road and the road, and acquiring the vehicle abundance based on at least one or more of the received vehicle information and the area information; A time function abundance is calculated based on the time function including the acquired abundance, and a time function transfer amount that is transmitted to an adjacent region as time passes is calculated based on the time function including the calculated time function abundance. Disposing the calculated time function existence amount and the time function transmission amount at a corresponding position on the subdivided map; and When receiving information, attaching the map information of the map in which the time function existence amount and the time function transfer amount are arranged to the in-vehicle program information; and the in-vehicle program information to which the map information is attached An information sharing program for executing the step of transmitting to the outside is provided.

  In the information sharing program of the present invention, in the receiving step, at least one or more of vehicle information related to the vehicle and vehicle-mounted program information for acquiring shared information useful for traveling of the vehicle from outside And the area information which is the information on the road of the vehicle and the traffic volume around the road, the exhaust gas abundance and the traffic volume of pedestrians and other persons, and received in the step of calculating Based on at least one of the vehicle information and the region information, the vehicle existence amount or the existence amount of the person, the vehicle, and the exhaust gas is obtained, and the time function by the time function including the obtained existence amount is obtained. Calculating the amount is a preferred embodiment of the present invention.

  In addition, according to the present invention, an information device that transmits information device program information for acquiring shared information useful for service use, and a region that is information on a traffic route of a vehicle and traffic around the travel route Based on at least one of the area information acquisition device for acquiring information and the area information received from the area information acquisition device, the vehicle presence amount is acquired, and the acquired time includes the presence amount The time function existence amount is calculated by calculating the time function transmission amount to be transmitted to an adjacent region as time passes by the time function including the calculated time function existence amount. When the information device program information is received from the information device when the amount and the time function transfer amount are arranged at corresponding positions on the subdivided map, the information device program information Serial time function abundance and the time function amount transduction attach Map arranged the map, information sharing system including an information sharing server to be transmitted to the information device is provided.

  In the information sharing system of the present invention, the region information includes information on an exhaust gas abundance and traffic volume of a pedestrian or other person, and the information sharing server receives the region information of the region information received from the region information acquisition device. It is a preferred aspect of the present invention to acquire the vehicle abundance based on at least one of the pieces of information, and to calculate the time function abundance based on the time function including the obtained abundance.

  In addition, according to the present invention, information device program information for acquiring shared information useful for service use from the outside, and region information that is information on a vehicle travel route and traffic around the travel route are received. Based on the reception unit and the area information received by the reception unit, the vehicle abundance is acquired, a time function abundance is calculated based on a time function including the acquired abundance, and the calculated time Calculating means for calculating a time function transfer amount to be transmitted to an adjacent region as time passes by a time function including a function existing amount; and the time function existence amount and the time function transfer amount calculated by the calculation means. When the information device program information is received by the placement means for placement at a corresponding position on the subdivided map and the reception means, the time relation is obtained by the placement means. Attachment means for attaching the map information of the map in which the presence amount and the amount of time function transmission are arranged to the information equipment program information, and the information equipment program information to which the map information is attached by the attachment means to the outside There is provided an information sharing server comprising a transmitting means for transmitting.

  Also, in the information sharing server of the present invention, the receiving means is information equipment program information for acquiring shared information useful for service use from the outside, the travel path of the vehicle, the traffic volume around the travel path, and the exhaust. Area information that is information on the gas abundance and traffic volume of pedestrians and other people is received, and the calculation means is based on the area information received by the reception means, and the abundance of people, vehicles, and exhaust gas It is a preferable aspect of the present invention to obtain a time function abundance based on a time function including the obtained abundance.

  In addition, according to the present invention, information device program information for acquiring shared information useful for service use from the outside, and region information that is information on a vehicle travel route and traffic around the travel route are received. Step, and based on the received region information, the vehicle abundance is acquired, a time function abundance is calculated based on the time function including the acquired abundance, and the calculated time function abundance is included. A step of calculating a time function transfer amount to be transmitted to an adjacent region with the passage of time by the time function, and a corresponding position on the map obtained by subdividing the calculated time function existence amount and the time function transfer amount And when the information device program information is received from the outside, the map information of the map in which the time function existence amount and the time function transmission amount are arranged is stored in the information. A step attached to the device program information, information sharing method and a step of transmitting the information device program information in which the map information is attached to the outside is provided.

  Further, in the information sharing method of the present invention, in the receiving step, information device program information for acquiring shared information useful for service use from the outside, and a traffic route of the vehicle and the traffic volume around the travel route, Receiving region information, which is information on the amount of exhaust gas present and the traffic volume of pedestrians and other people, and in the step of calculating, obtain the amount of people, vehicles, and exhaust gases present based on the received region information. Then, it is a preferable aspect of the present invention to calculate the time function abundance by the time function including the obtained abundance.

  In addition, according to the present invention, information device program information for acquiring shared information useful for service use from the outside, and region information that is information on a vehicle travel route and traffic around the travel route are received. Step, and based on the received region information, the vehicle abundance is acquired, a time function abundance is calculated based on the time function including the acquired abundance, and the calculated time function abundance is included. A step of calculating a time function transfer amount to be transmitted to an adjacent region with the passage of time by the time function, and a corresponding position on the map obtained by subdividing the calculated time function existence amount and the time function transfer amount And when the information device program information is received from the outside, the map information of the map in which the time function existence amount and the time function transmission amount are arranged is stored in the information. A step attached to the device program information, information sharing program for executing a step of transmitting the information device program information in which the map information is attached to the outside is provided.

  Further, in the information sharing program of the present invention, in the receiving step, information equipment program information for acquiring shared information useful for service use from the outside, and the traffic volume of the vehicle and the road around the vehicle, Receiving region information, which is information on the amount of exhaust gas present and the traffic volume of pedestrians and other people, and in the step of calculating, obtain the amount of people, vehicles, and exhaust gases present based on the received region information. Then, it is a preferable aspect of the present invention to calculate the time function abundance by the time function including the obtained abundance.

  Further, according to the present invention, based on the region information acquisition device that acquires region information that is information on the traffic route of the vehicle and the traffic volume around the travel route, and the region information acquired by the region information acquisition device, Obtain the vehicle abundance, calculate the time function abundance by the time function including the obtained abundance, and calculate the time function transmission amount transmitted from the adjacent area as time passes by the predetermined time function In-vehicle information for calculating and arranging the calculated time function existence amount, the time function transmission amount, and the time function remaining amount previously arranged and remaining at the corresponding position on the subdivided map An information sharing system including a terminal is provided.

  In the information sharing system of the present invention, the area information includes an exhaust gas abundance and a traffic volume of a pedestrian or other person, and the in-vehicle information terminal is based on the area information acquired by the area information acquisition device. Thus, it is a preferable aspect of the present invention to acquire the abundance of the vehicle or the abundance of the person, the vehicle, and the exhaust gas, and calculate a time function abundance by a time function including the obtained abundance.

  According to the present invention, the vehicle information terminal mounted on the vehicle that transmits vehicle information related to the vehicle itself, the vehicle information transmitted by the vehicle information terminal, the vehicle information and the travel path and travel of the vehicle are received. The presence of a vehicle based on at least one of the region information acquisition device that acquires region information that is traffic volume information around the road, the vehicle information received from the region information acquisition device, and the region information. Obtaining a quantity, calculating a time function abundance by a time function including the obtained abundance, calculating a time function transfer amount transmitted from an adjacent region over time by a predetermined time function, The calculated time function abundance, the time function transmission amount, and the time function remaining amount that has been previously arranged and remains at the current time are arranged at corresponding positions on the subdivided map, and arranged Information sharing system including an information sharing server for transmitting the map information of the map to the on-vehicle information terminal that is provided.

  Further, in the information sharing system of the present invention, the area information includes an exhaust gas abundance and a traffic volume of a pedestrian or another person, and the information sharing server receives the vehicle information and the area received from the area information acquisition device. Based on at least one or more pieces of information, a vehicle abundance or a person, vehicle, exhaust gas abundance is acquired, and a time function abundance is calculated based on a time function including the acquired abundance. Is a preferred embodiment of the present invention.

  According to the present invention, the vehicle information terminal mounted on the vehicle that transmits vehicle information related to the vehicle itself, the vehicle information transmitted by the vehicle information terminal, the vehicle information and the travel path and travel of the vehicle are received. Area information that is traffic volume information around the road is acquired, the vehicle abundance is acquired based on at least one of the vehicle information and the area information, and the acquired abundance is included. A time function abundance is calculated by a time function, a time function transfer amount transmitted from an adjacent region as time passes by a predetermined time function is calculated, and the calculated time function abundance and time function transfer are calculated. The amount and the remaining time function remaining amount that has been arranged at the present time are arranged at corresponding positions on the subdivided map, and the map information of the arranged map is transmitted to the in-vehicle information terminal Information sharing system comprising a band information acquisition device are provided.

  In the information sharing system of the present invention, the area information acquisition device receives the vehicle information transmitted by the in-vehicle information terminal, and the traffic volume of the vehicle, the traffic volume around the travel path, the exhaust gas existing amount, Area information, which is information on the traffic volume of pedestrians and other people, is acquired, and based on at least one of the vehicle information and the area information, the amount of vehicles or the presence of people, vehicles, and exhaust gas It is a preferable aspect of the present invention to acquire a quantity and calculate a time function abundance by a time function including the obtained abundance.

  In addition, according to the present invention, the area information providing terminal that acquires area information that is information on the traffic route of the vehicle and the traffic volume around the road, and transmits the acquired area information to the outside, the area information provision Based on the region information transmitted from the terminal, the vehicle abundance is acquired, a time function abundance is calculated based on the time function including the acquired abundance, and as time passes by a predetermined time function The time function transfer amount transmitted from the adjacent area is calculated, and the calculated time function existence amount, the time function transfer amount, and the time function remaining amount that has been arranged and remains at the present time are subdivided. There is provided an information sharing system including an information providing server arranged at a corresponding position on a map and transmitting map information of the arranged map to an in-vehicle information terminal mounted on a vehicle traveling on the traveling path. .

  In the information sharing system of the present invention, the area information providing terminal obtains area information which is information on the traffic volume of the vehicle, the traffic volume around the travel path, the exhaust gas amount, and the traffic volume of pedestrians and other people. Then, the acquired area information is transmitted to the outside, and the information providing server, based on the area information transmitted from the area information providing terminal, presents a vehicle abundance or a person, a vehicle, an exhaust gas abundance. It is a preferable aspect of the present invention to obtain a time function abundance based on a time function including the obtained abundance.

  Further, according to the present invention, when the vehicle is mounted on an in-vehicle information terminal that is mounted on the vehicle that transmits vehicle information on its own vehicle and is mounted on another vehicle other than the vehicle, and the other vehicle travels in a predetermined area. , Receiving the vehicle information transmitted from the in-vehicle information terminal, obtaining the vehicle abundance based on the vehicle information, calculating a time function abundance by a time function including the obtained abundance, Calculates the time function transfer amount transmitted from the adjacent area as time passes by a predetermined time function, and calculates the time function existing amount, the time function transfer amount, and the previously disposed remaining at the present time An information sharing system is provided that includes an information providing terminal that arranges the remaining time function amount at a corresponding position on the subdivided map and transmits map information of the arranged map to the in-vehicle information terminal. That.

  Further, in the information sharing system of the present invention, the vehicle information transmitted from the in-vehicle information terminal when the information providing terminal is mounted on another vehicle other than the vehicle and the other vehicle travels in a predetermined area. To obtain the abundance of the vehicle or the abundance of the person, the vehicle, and the exhaust gas based on the vehicle information, and to calculate a time function abundance by a time function including the obtained abundance, This is a preferred embodiment of the present invention.

  An information sharing system, an information sharing server, an information sharing method, and an information sharing program of the present invention have the above-described configuration, and can be deleted in real time without taking the trouble of deleting information whose use value has been lost. Can provide information with high reliability.

<First Embodiment>
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a diagram showing a configuration of an information sharing system according to a first embodiment of the present invention. FIG. 2 is a diagram for explaining a specific example when the strength of the digitized information in the information sharing server according to the first embodiment of the present invention is reflected on a map. FIG. 3 is a diagram showing a histogram showing the strength of information in the information transmission program field and its surroundings in the information sharing server according to the first embodiment of the present invention, and a histogram in which the strength of information is added. . FIG. 4 is a diagram for explaining the strength of information (reliability of information freshness) that attenuates with the passage of time in the information sharing server according to the first embodiment of the present invention. . FIG. 5 shows the strength of information (information freshness level) transmitted to an adjacent information transmission program field or information sharing server with the passage of time in the information sharing server according to the first embodiment of the present invention. It is a figure for demonstrating (reliability). FIG. 6 is a diagram showing the configuration of the information sharing server according to the first embodiment of the present invention. FIG. 7 shows from the calculation of the information strength in the information sharing server according to the first embodiment of the present invention to the transmission of the in-vehicle program information attached with the map information in which the information strength is arranged to the in-vehicle information terminal. It is a flowchart for demonstrating the process of.

  FIG. 8 is a diagram for explaining route search using the information sharing system according to the first embodiment of the present invention. FIG. 9 is a diagram for explaining route search using the information sharing system according to the first embodiment of the present invention. FIG. 10 is a diagram for explaining a traffic jam avoidance application using the information sharing system according to the first embodiment of the present invention. FIG. 11 is a diagram for explaining a danger prediction application using the information sharing system according to the first embodiment of the present invention. FIG. 12 is a diagram for explaining a service area use support application using the information sharing system according to the first embodiment of the present invention.

  First, the configuration of the information sharing system according to the first embodiment of the present invention will be described with reference to FIG. As shown in FIG. 1, the information sharing system according to the first embodiment of the present invention includes an in-vehicle information terminal 100, an external sensor 101, and information sharing servers 102 and 103. The in-vehicle information terminal 100 transmits at least one information of vehicle information related to its own vehicle and in-vehicle program information for acquiring shared information useful for traveling of the vehicle, and is mounted on the vehicle. It is what. The vehicle information refers to, for example, vehicle type, speed information, current vehicle position information, destination information that is destination information, and the like. The timing at which the in-vehicle information terminal 100 transmits vehicle information to the information sharing server 102 is, for example, every time the vehicle information terminal 100 enters a predetermined or predetermined area.

  Here, the information sharing server 102 that has received the vehicle information leaves the area where the vehicle that transmitted the vehicle information has entered after receiving the vehicle information, and the vehicle-mounted information terminal that is mounted on the vehicle except when entering the area again The vehicle information transmitted from 100 may be invalidated. The in-vehicle information terminal 100 may transmit the vehicle information via the external sensor 101 when transmitting the vehicle information to the information sharing server 102. The in-vehicle information terminal 100 is, for example, a car navigation system. However, the in-vehicle information terminal 100 is not limited to a car navigation system, and can be implemented even with a portable information terminal such as a mobile phone terminal or a PDA terminal. In this case, a portable information terminal such as a mobile phone terminal or a PDA terminal has a function that the car navigation system has. Further, the mobile information terminal may acquire only the information that the information sharing server 102 has, without transmitting its own vehicle information as in the car navigation system. Here, the vehicle refers to, for example, an automobile and a motorcycle.

  The external sensor 101 acquires area information that is information on the road of the vehicle, the traffic volume around the road, the amount of exhaust gas present, and the traffic volume of pedestrians and other people. Equivalent to. Here, the area information refers to information such as the amount of vehicles traveling on the road, the amount of exhaust gas from the vehicles, the amount of pedestrians on the sidewalk, and the amount of people parked on the sidewalks. The external sensor 101 is, for example, a fixed point camera or an RFID (Radio Frequency Identification) receiver. The external sensor 101 is installed so that the area information can be accurately acquired. For example, the external sensor 101 may be installed every several meters or every intersection on the road. It can be implemented even if it is installed only in a place where there are many or changes easily.

  The information sharing server 102 is based on at least one of the vehicle information received from the in-vehicle information terminal 100 and the area information received from the external sensor 101, or the amount of vehicles, or the amount of people, vehicles, and exhaust gases. Etc., calculate the time function abundance (also called the generated pheromone) by the time function including the acquired abundance, and adjacent areas as time passes by the time function including the calculated time function abundance The amount of time function transmission to be transmitted to is calculated. The calculated time function existence amount and time function transmission amount are arranged at corresponding positions on the segmented map, and the time function existence amount and the time function transmission amount are arranged in the in-vehicle program information received from the in-vehicle information terminal 100. The map information of the selected map is attached and transmitted to the in-vehicle information terminal 100. Here, the adjacent area refers to, for example, an information transmission program field described later in the information sharing server 102 or an information transmission program field managed by the adjacent information sharing server 103. The information sharing server is not limited to this.

  The time function is, for example, a function of time t, which is obtained by multiplying a constant decrease rate and transmission rate to the power of t by the presence amount of people and vehicles and the time function existence amount. Here, the time function may be set in advance or dynamically. The time function abundance is hereinafter also referred to as reliability of information strength or freshness of information. The strength of the information is determined based on a standard of 10 when there are 100 people, 10 when there are 5 vehicles, and 10 when there is 10 kg of exhaust gas, for example. The reliability of the freshness of information is determined by a criterion that the reliability of freshness is higher when the strength of the information is 10 than when it is 5, for example. This criterion is not limited to this. The range of reliability of information strength or information freshness may be 0 to 10 or 0 to 100, and is not limited thereto. Further, the strength of the information may be an amount that actually exists without being quantified based on the rule determined as described above. Here, a specific example in which the strength of digitized information or the reliability of information freshness is reflected on a map will be described with reference to FIG.

  As shown in FIG. 2, the map is divided into a first area 200 and a second area 201, and a road 202 is shown on the map. Hereinafter, these divided areas are also referred to as information transmission fields. The map is not divided into only the information transmission fields 200 and 201, but may be divided into a plurality of information transmission fields. An area where the information transmission field is further subdivided into a lattice shape is called an information transmission program field. Here, when an event is performed in a place corresponding to the information transmission program field 203, the information transmission program field 203 crowded with people is represented by a numerical value of the reliability 10 of information strength or freshness of information. ing. At this time, the peripheral information transmission program field may be represented by a numerical value proportional to the amount of people based on the strength of information in the information transmission program field 203.

  Further, when an event is performed at a location corresponding to the information transmission program field 204 and the adjacent information transmission program field, or at a location corresponding to the information transmission program field 205 and the adjacent information transmission program field, that is, a plurality of events are nearby. The quantification of the strength of information in the case of the above will be described. First, in the place corresponding to the information transmission program field 204 and the adjacent information transmission program field, the strength of information when the event A is performed is an information transmission program in eight directions centering on the information transmission program field 204. In the field, 9, 8, 6 are arranged from the upper left to the upper right, 9, 10, 8 from the left middle to the right middle, and 9, 9, 7 from the lower left to the lower right.

  On the other hand, in the place corresponding to the information transmission program field 205 and the adjacent information transmission program field, the strength of information when the event B is performed is an information transmission program in eight directions with the information transmission program field 205 as the center. The fields are arranged as 6, 7, 8 from the upper left to the upper right, 7, 10, 9 from the left middle to the middle right, and 4, 6, 7 from the lower left to the lower right. In this example, only nine information transmission program fields are assumed for convenience, but the present invention is not limited to these.

  The histogram indicating the strength of information transmission program field 204 and its surrounding information or the reliability of information freshness, and the strength of information transmission program field 205 and its surrounding information or the reliability of information freshness at this time are shown. FIG. 3 shows a histogram obtained by adding the reliability of the strength of information or the freshness of information shown in both histograms. The histogram shown in FIG. 3 shows the reliability of information strength or freshness of information in the middle left to right middle, that is, the middle stage when the above-described plurality of events in FIG. 2 are performed in the vicinity. is there. FIG. 3A shows the reliability of the information strength of the event A and the event B or the reliability of the information freshness by two different histograms.

  The wider histogram represents event A, and the narrower histogram represents event B. Here, there are portions where two histograms are overlapped, and the overlapped portions are added together to quantify the reliability of information strength or freshness of information. FIG. 3B shows a case where two histograms are added up. As shown in FIG. 3B, since the overlapping portions are added together, there is an information transmission program field that exceeds the maximum value 10 of the reliability of the information strength or the freshness of the information that is initially arranged. There is also.

  The map shown in FIG. 2 reflects the event information, but may reflect the traffic congestion information indicating the traffic jam of the vehicle. In this case, the map reflecting the event information and traffic jam information is managed separately. For example, when using for route search, if you want to avoid congestion, a map reflecting traffic congestion information is used for traffic congestion prediction from the reliability of information freshness, and if you have an event you want to participate If there is, a map reflecting the event information is used. However, the map is not limited to the map reflecting the event information and the traffic jam information, and there may be a map reflecting various information.

  In addition, the reliability of the information strength or the freshness of the information is attenuated with the passage of time, for example, is attenuated by 10% per second. The time for attenuation is not limited to 1 second intervals, and may be attenuated at any intervals. Further, the rate of attenuation is not limited to 10% and may be any number, but it is preferable to attenuate at a rate of 10% to 20%. Here, the reliability of the strength of information or the freshness of information that decreases with the passage of time will be described with reference to FIG. As shown in FIG. 4, the information transmission program field group 400 becomes the information transmission program field group 401 when t1 time elapses, and becomes the information transmission program field group 402 when t2 time elapses. As described above, the reliability of information strength or freshness of information is attenuated with the passage of time. In addition, when predetermined time passes, you may set so that the reliability of the strength of information or the freshness of information may be invalidated.

  In addition, the reliability of the information strength or the freshness of the information depends on the installation location of the external sensor 101. For example, if there are 100 people in a busy area such as Shibuya, if there are 100 people, the reliability of information strength or freshness of information is 5. If there are 100 people, the reliability of information strength or freshness of information is set to 10. This is because the place where there is no flow of people does not change the amount of people and is difficult to attenuate, so the reliability of information strength or freshness of information is set larger than the place where people flow. . The reliability of the strength of information or the freshness of information is transmitted to adjacent information transmission program fields as time passes, for example, 10% is transmitted per second. is there. The transmission time is not limited to 1 second intervals, and may be transmitted at intervals of several seconds. Further, the rate of transmission is not limited to 10% and may be any number.

  In addition, when the strength of information already existing in the adjacent information transmission program field or the reliability of information freshness exceeds a predetermined numerical value, the transmission ratio is small and does not exceed the predetermined numerical value. In some cases, the rate of transmission increases. For example, when the strength of information in the adjacent information transmission program field or the reliability of information freshness exceeds 5, 10% is transmitted per second, and when it does not exceed 5, 20% per second. You may make it transmit. Here, the reliability of the strength of information or the freshness of information transmitted over time will be described with reference to FIG. As shown in FIG. 5, the information transmission program field group 500 becomes the information transmission program field group 501 when t3 time elapses, and becomes the information transmission program field group 502 after t4 time elapses. In this way, the reliability of the strength of information or the freshness of information is transmitted over time. In addition, when predetermined time passes, you may set so that the reliability of the strength of information or the freshness of information may be invalidated.

  Next, the configuration of the information sharing server 102 will be described with reference to FIG. As shown in FIG. 6, the information sharing server 102 according to the present invention includes a receiving unit 600, a calculating unit 601, an arranging unit 602, an attaching unit 603, and a transmitting unit 604. The receiving unit 600 serving as a receiving unit includes at least one or more pieces of information from the in-vehicle information terminal 100 such as vehicle information related to the own vehicle and in-vehicle program information for acquiring shared information useful for driving the vehicle. In addition, from the external sensor 101, region information that is information such as a vehicle travel path, traffic around the travel path, exhaust gas abundance, and traffic volume of pedestrians and others is received. The calculation unit 601 serving as a calculation unit calculates the reliability of the information strength or the freshness of the information based on at least one of the vehicle information and the region information received by the reception unit 600, and calculates A time function transmission amount to be transmitted to an adjacent region with the passage of time by a time function including the strength of the information or the reliability of information freshness is calculated.

  The placement unit 602 as a placement unit places the strength of information calculated by the calculation unit 601 or the reliability of information freshness and the amount of time function transfer in the corresponding information transfer program field on the subdivided map. . The map information is stored in a storage area (not shown). The attachment unit 603 as an attachment means is a map of a map in which the placement unit 602 arranges the strength of information or the reliability of information freshness and the time function transmission amount when the receiving unit 600 receives the in-vehicle program information. Attach information to in-vehicle program information. Here, the in-vehicle program information may be an agent that operates autonomously. The transmitting unit 604 serving as a transmitting unit transmits to the in-vehicle information terminal 100 the in-vehicle program information to which the map information in which the strength of information or the reliability of information freshness and the time function transmission amount are arranged is attached by the attaching unit 603. To do.

  Next, the information strength or the freshness reliability and the time function transfer amount are arranged from the calculation of the information strength or the information freshness reliability and the time function transfer amount in the information sharing server 102. Processing until the vehicle-mounted program information with the map information attached is transmitted to the vehicle-mounted information terminal 100 will be described with reference to FIG. The receiving unit 600 receives at least one piece of vehicle information and in-vehicle program information from the in-vehicle information terminal 100 and region information from the external sensor 101 (step S701). The calculation unit 601 calculates the strength of information or the reliability of information freshness and the amount of time function transmission based on at least one or more pieces of vehicle information and area information received by the receiving unit 600 (step S1). S702). The placement unit 602 places the strength of information calculated by the calculation unit 601 or the reliability of information freshness and the amount of time function transfer in the corresponding information transfer program field on the map (step S703). When the in-vehicle program information is received by the receiving unit 600, the attachment unit 603 displays the map information of the map in which the reliability of the information strength or the freshness of information and the time function transmission amount are arranged by the arrangement unit 602. It attaches to information (step S704). The transmission unit 604 transmits to the in-vehicle information terminal 100 the in-vehicle program information to which the map information in which the reliability of the information strength or the freshness of information and the time function transmission amount are arranged is attached by the attachment unit 603 (step S705). ).

  Next, route search using the information sharing system according to the first embodiment will be described with reference to FIGS. As shown in FIG. 8, when the vehicle 800A performs a route search using the place where the vehicle 800B is located as a destination, the vehicle 800A has a route via the road where the information sharing server 102B is installed or the information sharing server 102C. The route via the installed road will be selected. For example, consider a case where the vehicle 800A avoids congestion and wants to go to the destination in a hurry. As shown in FIG. 9, the in-vehicle information terminal 100 of the vehicle 800A moves the in-vehicle program information to the information sharing server 102A (step S901). The in-vehicle program information in this case is to acquire the reliability of the information strength or the freshness of the information and the amount of time function transmission that each information sharing server has. Further, the vehicle information of the vehicle 800A may be moved together with the in-vehicle program information. This vehicle information is provided to each information sharing server when moving together with the in-vehicle program information. The information sharing server 102A generates a copy of the in-vehicle program information, and moves the generated copy of the in-vehicle program information to the information sharing servers 102B and 102C (steps S902 and S903).

  The information sharing server 102B causes the replicated in-vehicle program information that has moved from the information sharing server 102A to acquire the strength of information or the reliability of information freshness and the amount of time function transfer, and move the information to the information sharing server 102D ( Step S904). The information sharing server 102C causes the replicated in-vehicle program information that has been moved from the information sharing server 102A to acquire the strength of information or the reliability of information freshness and the amount of time function transfer, and move the information to the information sharing server 102D ( Step S905). The information sharing server 102D causes the replicated in-vehicle program information moved from the information sharing servers 102B and 102C to acquire the strength of information or the reliability of information freshness and the amount of time function transmission, respectively, and causes the information sharing server 102A to Return (step S906). The information sharing server 102A determines the optimum route based on the strength of information acquired by the replicated in-vehicle program information or the reliability of information freshness and the amount of time function transfer, and the determined optimum route is determined based on the in-vehicle information terminal. It transmits to 100 (step S907).

  Next, a traffic jam avoidance application using the information sharing system according to the first embodiment will be described with reference to FIG. All of the vehicles A, B, C, D, E, and F travel in the direction indicated by the arrow 1000, and the vehicles C, D, and F are vehicles that go to the same place. Further, the vicinity of the vehicles D, E, and F is congested. At this time, the information sharing server 1001 calculates the reliability of the information or the freshness of the information and the amount of time function transmission from the traffic jam in the vicinity of the vehicles D, E, and F, and the calculated information strength or The reliability of information freshness and the amount of time function transfer are placed in the corresponding information transfer program field on the map. Subsequent vehicles A, B, and C acquire the arranged map information, and detour in a direction that suits the purpose of each vehicle based on the acquired map information.

  In the case of FIG. 10, the vehicle C avoids traffic congestion by turning left to the position C ′ and the vehicle B turning right to the position B ′. However, if it is not chronic traffic congestion, the reliability of information strength or the freshness of information and the amount of time function transmission will decrease with time, so the strength of information or the reliability of information freshness Since the numerical values indicating the degree and the time function transmission amount are lowered or cleared, it is considered that the vehicle may go straight. In addition, when there is a vehicle that travels dangerously (not shown), for example, a vehicle that exits the right turn signal in the overtaking lane and covers the vehicle ahead, the information sharing server 1001 identifies the presence of such a vehicle. Strength or information freshness reliability and time function transfer amount are quantified, and information strength or information freshness reliability and time function transfer amount is acquired to the subsequent vehicle to call attention. Can also be implemented.

  Next, a danger prediction application using the information sharing system according to the first embodiment described above will be described with reference to FIG. As shown in FIG. 11A, the vehicle A and the motorcycle G are traveling in the direction of the arrow 1100, the parked vehicle D is in the travel lane of the vehicle A, and the human H is in front of the parked vehicle D. . At this time, the information sharing server 1101 digitizes the presence of the person H ahead of the parked vehicle D as the information strength, and causes the traveling vehicle A to acquire map information in which the digitized information strength is arranged. The vehicle A can predict the danger and can safely change the lane to the position A ′. In addition, as shown in FIG. 11B, in the T-junction, the information sharing server 1102 determines the presence of the vehicle B that becomes a blind spot from the vehicle A, the reliability of information strength or the reliability of information freshness, and time function transmission. By quantifying the quantity and causing the vehicle A to acquire it, the vehicle A can predict danger and travel safely.

  Next, a service area use support application using the information sharing system according to the first embodiment will be described with reference to FIG. As shown in FIG. 12, vehicles A and B are traveling on a road, and a service area SA is installed on the traveling road. The information sharing server 1200 installed in the service area SA digitizes the degree of congestion in the service area SA as the information strength, and the reliability of the digitized information strength or freshness of information and time function transmission. The amount is acquired by the vehicles A and B traveling on the road. Thereby, the vehicles A and B can select whether to stop at the service area SA or to go to the next service area SA.

<Second Embodiment>
Next, the configuration of the information sharing system according to the second embodiment of the present invention will be described with reference to FIG. As shown in FIG. 13, the information sharing system according to the second embodiment of the present invention includes an in-vehicle information terminal 1300, an external sensor 1301, and a VICS center device 1302. Note that a relay device (not shown) may exist between the in-vehicle information terminal 1300 and the VICS center device 1302 and between the external sensor 1301 and the VICS center device 1302. In the following description, it is described that the in-vehicle information terminal 1300, the external sensor 1301, and the VICS center device 1302 perform processing. However, what is actually processed is processing means in each device. It is. The in-vehicle information terminal 1300 transmits vehicle information related to its own vehicle to the external sensor 1301, and is mounted on the vehicle. The vehicle information refers to, for example, vehicle type, speed information, current vehicle position information, destination information that is destination information, and the like. The timing at which the in-vehicle information terminal 1300 transmits the vehicle information to the external sensor 1301 is, for example, every time the vehicle information terminal 1300 enters a predetermined or predetermined area.

  Here, the external sensor 1301 that has received the vehicle information passes through the area where the vehicle that transmitted the vehicle information has entered after receiving the vehicle information, and the vehicle-mounted information terminal 1300 mounted on the vehicle except when entering the area again. The vehicle information transmitted from the vehicle may be invalidated. The in-vehicle information terminal 1300 is, for example, a car navigation system. However, the in-vehicle information terminal 1300 is not limited to the car navigation system, and can be implemented even with a portable information terminal such as a mobile phone terminal or a PDA terminal. In this case, a portable information terminal such as a mobile phone terminal or a PDA terminal has a function that the car navigation system has. Further, the portable information terminal may acquire only the information that the VICS center device 1302 has without transmitting its own vehicle information unlike the car navigation system. Here, the vehicle refers to, for example, an automobile and a motorcycle.

  The external sensor 1301 acquires area information that is information on the road of the vehicle, the traffic volume around the road, the amount of exhaust gas present, and the traffic volume of pedestrians and other people. Equivalent to. Here, the area information refers to information such as the amount of vehicles traveling on the road, the amount of exhaust gas from the vehicles, the amount of pedestrians on the sidewalk, and the amount of people parked on the sidewalks. The external sensor 1301 is, for example, a fixed point camera or an RFID receiver. In addition, the external sensor 1301 is installed so that the area information can be accurately acquired. For example, the external sensor 1301 may be installed every few meters or every intersection on the road. It can be implemented even if it is installed only in a place where there are many or changes easily.

  The VICS center device 1302 aggregates the area information received from the external sensor 1301 and transmits the aggregated information to the in-vehicle information terminal 1300. Based on the information received from the VICS center device 1302, the in-vehicle information terminal 1300 acquires the abundance of the vehicle or the abundance of the person, the vehicle, and the exhaust gas, and a time function abundance based on the time function including the obtained abundance. (Also referred to as a generated pheromone) is calculated, and a time function transfer amount (also referred to as a transfer pheromone) transmitted from an adjacent region as time passes by a predetermined time function is calculated. The in-vehicle information terminal 1300 displays the calculated time function existence amount, the time function transmission amount, and the time function remaining amount (also referred to as a residual pheromone) that has been arranged and remains at the present time on a subdivided map. Placed in the corresponding position. Here, the predetermined time function refers to q (t, p) described later. Further, the adjacent area means an adjacent information transmission program field as described in the first embodiment.

  The time function is a function of time t, for example. Here, the time function may be set in advance or dynamically. For example, the pheromone is 10 when there are 100 people, 10 when there are 5 vehicles, and 10 when there is 10 kg of exhaust gas. The range of the pheromone may be 0 to 10 or 0 to 100, and is not limited thereto. An example of the quantified pheromone is the same as that in the first embodiment, and a description thereof will be omitted. Here, formulas (1) and (2) show formulas for calculating the strength of the pheromone at the next time point (t + 1) and the amount of time function transmission (strength) at the next time point (t + 1).

  In Equation (1), E represents the evaporation rate (0 <E <1), and r (t, p) represents the strength of the pheromone generated in the field (position) p at the previous time point. The evaporation rate E is calculated from the diffusion rate F, the number of lanes, the average traffic volume, etc., which will be described later. Moreover, F in Formula (2) shows a spreading | diffusion rate (0 <F <1), N (p ') shows the number of the field adjacent to p. Here, r (t, p) and the diffusivity F are shown in Formula (3) and Formula (4).

  In Expression (3), α is a generation parameter (occurrence rate), and v is a vehicle speed. The generated parameters are calculated from the vehicle type, the number of lanes, the average traffic volume, and the like. In Expression (4), β and γ are diffusion parameters (diffusion rate), and c is a threshold value corresponding to a traffic jam. The model of Formula (1) and Formula (2) is a model by Sven Brueckner, http://dochost.rz.hu-berlin.de/dissertaionen/brueckner-sven-2000-06-21/PDF/Brueckner. pdf p. 43. In the present embodiment, the model by Sven Brueckner is expanded, and the expanded part is a part corresponding to Expression (3) and Expression (4).

  The in-vehicle information terminal 1300 predicts the traffic volume at the next time point from the pheromone amount (result of the prediction process) calculated from the above-described model, and searches for a route so as to avoid traffic congestion.

<Third Embodiment>
Next, the configuration of an information sharing system according to the third embodiment of the present invention will be described with reference to FIG. As shown in FIG. 14, the information sharing system according to the third embodiment of the present invention includes an in-vehicle information terminal 1400, an external sensor 1401, and a VICS center device 1402. Note that a relay device (not shown) may be present between the in-vehicle information terminal 1400 and the VICS center device 1402 and between the external sensor 1401 and the VICS center device 1402. In the following description, the in-vehicle information terminal 1400, the external sensor 1401, and the VICS center device 1402 are described as performing processing. However, the processing is actually performed in each device. It is. The in-vehicle information terminal 1400 transmits vehicle information related to its own vehicle to the external sensor 1401 and is mounted on the vehicle. The vehicle information refers to, for example, vehicle type, speed information, current vehicle position information, destination information that is destination information, and the like.

  The timing at which the in-vehicle information terminal 1400 transmits the vehicle information to the external sensor 1401 is, for example, every time the vehicle information terminal 1400 enters a predetermined or predetermined area. Here, the external sensor 1401 that has received the vehicle information passes through the area where the vehicle that transmitted the vehicle information has entered after receiving the vehicle information, and the vehicle-mounted information terminal 1400 that is mounted on the vehicle except when it enters the area again. The vehicle information transmitted from the vehicle may be invalidated. The in-vehicle information terminal 1400 is, for example, a car navigation system. However, the in-vehicle information terminal 1400 is not limited to the car navigation system, and can be implemented even with a portable information terminal such as a mobile phone terminal or a PDA terminal. In this case, a portable information terminal such as a mobile phone terminal or a PDA terminal has a function that the car navigation system has. Also, the portable information terminal may acquire only the information that the VICS center device 1402 has without transmitting its own vehicle information unlike a car navigation system. Here, the vehicle refers to, for example, an automobile and a motorcycle.

  The external sensor 1401 acquires area information that is information on the road of the vehicle, the traffic volume around the road, the amount of exhaust gas present, and the traffic volume of pedestrians and other people. Equivalent to. Here, the area information refers to information such as the amount of vehicles traveling on the road, the amount of exhaust gas from the vehicles, the amount of pedestrians on the sidewalk, and the amount of people parked on the sidewalks. The external sensor 1401 is, for example, a fixed point camera or an RFID receiver. The external sensor 1401 is installed so that the area information can be accurately acquired. For example, the external sensor 1401 may be installed every several meters or every intersection on the road. It can be implemented even if it is installed only in a place where there are many or changes easily.

  The VICS center device 1402 acquires the vehicle abundance or the abundance of people, vehicles, and exhaust gas based on at least one of the vehicle information and the area information received from the external sensor 1401. Calculates the time function abundance (also called the generated pheromone) by the time function including the abundance, and the time function transfer amount (also called the transfer pheromone) transmitted from the adjacent region with the passage of time by the predetermined time function. calculate. Then, the VICS center device 1402 displays the calculated time function existing amount, the time function transmission amount, and the time function remaining amount (also referred to as a residual pheromone) that has been arranged and remains at the present time on a subdivided map. The map information of the arranged map is transmitted to the in-vehicle information terminal 1400. Here, the predetermined time function refers to q (t, p) described above in the second embodiment. Further, the adjacent area means an adjacent information transmission program field as described in the first embodiment.

  The time function is a function of time t, for example. Here, the time function may be set in advance or dynamically. For example, the pheromone is 10 when there are 100 people, 10 when there are 5 vehicles, and 10 when there is 10 kg of exhaust gas. The range of the pheromone may be 0 to 10 or 0 to 100, and is not limited thereto. An example of the quantified pheromone is the same as that in the first embodiment, and a description thereof will be omitted. The calculation formula for the strength of the pheromone at the next time point and the time function transmission amount (the strength thereof) at the next time point is the same as that in the second embodiment, and a description thereof will be omitted.

  The in-vehicle information terminal 1400 predicts the traffic volume at the next time point from the pheromone amount (result of the prediction process) received from the VICS center device 1402, and searches for a route so as to avoid traffic congestion.

<Fourth embodiment>
Next, the configuration of an information sharing system according to the fourth embodiment of the present invention will be described with reference to FIG. As shown in FIG. 15, the information sharing system according to the fourth embodiment of the present invention includes an in-vehicle information terminal 1500 and external sensors 1501 and 1502. Although the number of external sensors is not limited to two, here, a case where two external sensors are provided will be described. Further, in the following description, the in-vehicle information terminal 1500 and the external sensors 1501 and 1502 are described as performing processing, but the actual processing is performed by processing means in each device. The in-vehicle information terminal 1500 transmits vehicle information related to its own vehicle to, for example, a nearby external sensor 1501 and is mounted on the vehicle. The vehicle information refers to, for example, vehicle type, speed information, current vehicle position information, destination information that is destination information, and the like.

  The timing at which the in-vehicle information terminal 1500 transmits vehicle information to the external sensor 1501 is, for example, every time the vehicle information terminal 1500 enters a predetermined or predetermined area. Here, the external sensor 1501 that has received the vehicle information passes through the area where the vehicle that transmitted the vehicle information has entered after receiving the vehicle information, and the vehicle-mounted information terminal 1500 mounted on the vehicle except when entering the area again. The vehicle information transmitted from the vehicle may be invalidated. The in-vehicle information terminal 1500 is a car navigation system, for example. However, the in-vehicle information terminal 1500 is not limited to a car navigation system, and can be implemented even with a mobile information terminal such as a mobile phone terminal or a PDA terminal. In this case, a portable information terminal such as a mobile phone terminal or a PDA terminal has a function that the car navigation system has. Further, the portable information terminal may acquire only the information that the external sensor 1501 or 1502 has without transmitting its own vehicle information unlike a car navigation system. Here, the vehicle refers to, for example, an automobile and a motorcycle.

  The external sensors 1501 and 1502 are adjacent external sensors, and share the area information that is information on the road of the vehicle, the traffic around the road, the amount of exhaust gas, and the traffic volume of pedestrians and others. doing. For example, when a vehicle on which the in-vehicle information terminal 1500 is mounted travels in the traveling direction 1503 in FIG. 15, the external sensor 1502 is based on the area information shared with the external sensor 1501 in advance, The exhaust gas abundance is acquired, and the time function abundance (also referred to as a generated pheromone) is calculated from the time function including the obtained abundance, and from adjacent regions as time passes by a predetermined time function The amount of transmitted time function (also referred to as transfer pheromone) is calculated. Then, the external sensor 1502 displays the calculated time function abundance, time function transmission amount, and time function remaining amount (also referred to as a residual pheromone) that has been previously arranged and remains at the present time on a subdivided map. It arrange | positions in a corresponding position and transmits the map information of the arrange | positioned map to the vehicle-mounted information terminal 1500.

  Here, the predetermined time function refers to q (t, p) described above in the second embodiment. Further, the adjacent area means an adjacent information transmission program field as described in the first embodiment. The time function is a function of time t, for example. Here, the time function may be set in advance or dynamically. For example, the pheromone is 10 when there are 100 people, 10 when there are 5 vehicles, and 10 when there is 10 kg of exhaust gas. The range of the pheromone may be 0 to 10 or 0 to 100, and is not limited thereto. An example of the quantified pheromone is the same as that in the first embodiment, and a description thereof will be omitted. The calculation formula for the strength of the pheromone at the next time point and the time function transmission amount (the strength thereof) at the next time point is the same as that in the second embodiment, and a description thereof will be omitted.

  The in-vehicle information terminal 1500 predicts the traffic volume at the next time point from the amount of pheromone received from the external sensor 1502 (prediction processing result), and searches for a route so as to avoid traffic congestion. Note that the prediction process is not limited to the external sensor 1502, but may be performed by another external sensor.

<Fifth embodiment>
Next, the configuration of an information sharing system according to the fifth embodiment of the present invention will be described with reference to FIG. As shown in FIG. 16, the information sharing system according to the fifth embodiment of the present invention includes an in-vehicle information terminal 1600, a probe car terminal 1601, and a probe car center device 1602. Information is exchanged between the in-vehicle information terminal 1600 and the probe car center apparatus 1602 and between the probe car terminal 1601 and the probe car center apparatus 1602 via, for example, a wireless public line. In the following description, the in-vehicle information terminal 1600, the probe car terminal 1601, and the probe car center device 1602 are described as performing processing, but the actual processing is performed within the respective devices. Means.

  The probe car terminal 1601 is mounted on a probe car 1603 that actually travels, and the actual traffic state in the vicinity is acquired by the probe car 1603 traveling. For example, the probe car terminal 1601 receives the vehicle information of the vehicle from the in-vehicle information terminal 1600 mounted on the vehicle 1604 traveling around. The probe car terminal 1601 transmits the received vehicle information, own position information, own speed information, and the like to the probe car center device 1602 via a wireless public line. The probe car center device 1602 acquires the presence amount of the vehicle or the presence amount of the person, the vehicle, and the exhaust gas based on the information received from the probe car terminal 1601, and the presence of the time function by the time function including the acquired existence amount. An amount (also referred to as a generated pheromone) is calculated, and a time function transfer amount (also referred to as a transfer pheromone) transmitted from an adjacent region as time passes by a predetermined time function is calculated. Then, the probe car center device 1602 subdivides the calculated time function existence amount, time function transmission amount, and time function remaining amount (also referred to as remaining pheromone) that has been arranged and remains at the present time. It arrange | positions in the upper corresponding position, and transmits the map information of the arrange | positioned map to the vehicle-mounted information terminal 1600 mounted in the vehicle which drive | works a driving path.

  Here, the predetermined time function refers to q (t, p) described above in the second embodiment. Further, the adjacent area means an adjacent information transmission program field as described in the first embodiment. The time function is a function of time t, for example. Here, the time function may be set in advance or dynamically. For example, the pheromone is 10 when there are 100 people, 10 when there are 5 vehicles, and 10 when there is 10 kg of exhaust gas. The range of the pheromone may be 0 to 10 or 0 to 100, and is not limited thereto. An example of the quantified pheromone is the same as that in the first embodiment, and a description thereof will be omitted. The calculation formula for the strength of the pheromone at the next time point and the time function transmission amount (the strength thereof) at the next time point is the same as that in the second embodiment, and a description thereof will be omitted.

  The in-vehicle information terminal 1600 predicts the traffic volume at the next time point from the amount of pheromone received from the probe car center device 1602 (result of the prediction process), and searches for a route so as to avoid traffic congestion.

<Sixth Embodiment>
Next, the configuration of the information sharing system according to the sixth embodiment of the present invention will be described with reference to FIG. As shown in FIG. 17, the information sharing system according to the sixth embodiment of the present invention includes in-vehicle information terminals 1700 and 1701. In this embodiment, vehicles communicate with each other. For example, an in-vehicle information terminal mounted on a vehicle near an intersection or a predetermined point (field) (hereinafter also referred to as a pheromone field) is used as a pheromone field server to perform prediction processing. The result of the prediction process is received by an in-vehicle information terminal mounted on a surrounding vehicle. Specifically, using FIG. 17, the pheromone field server is an in-vehicle information terminal 1700 mounted on the vehicle 1702, and the terminal that receives the prediction processing result of the pheromone field server is the on-vehicle information terminal 1701 mounted on the vehicle 1703. . At this time, the in-vehicle information terminal 1701 transmits its own position information, speed information, surrounding traffic information, and the like to the in-vehicle information terminal 1700 that is a pheromone field server. In the following description, it is described that the in-vehicle information terminals 1700 and 1701 perform processing. However, what is actually processed is processing means in each device.

  The in-vehicle information terminal 1700 that is a pheromone field server acquires the abundance of the vehicle or the abundance of the person, the vehicle, and the exhaust gas based on the received information, and the time function abundance by the time function including the obtained abundance. (Also referred to as a generated pheromone) is calculated, and a time function transfer amount (also referred to as a transfer pheromone) transmitted from an adjacent region as time passes by a predetermined time function is calculated. The in-vehicle information terminal 1700 displays the calculated time function existence amount, the time function transmission amount, and the time function remaining amount (also referred to as a residual pheromone) that has been previously arranged and remains at the present time on a subdivided map. The map information of the arranged map is transmitted to the in-vehicle information terminal 1701. Here, the predetermined time function refers to q (t, p) described above in the second embodiment. Further, the adjacent area means an adjacent information transmission program field as described in the first embodiment.

  The time function is a function of time t, for example. Here, the time function may be set in advance or dynamically. For example, the pheromone is 10 when there are 100 people, 10 when there are 5 vehicles, and 10 when there is 10 kg of exhaust gas. The range of the pheromone may be 0 to 10 or 0 to 100, and is not limited thereto. An example of the quantified pheromone is the same as that in the first embodiment, and a description thereof will be omitted. The calculation formula for the strength of the pheromone at the next time point and the time function transmission amount (the strength thereof) at the next time point is the same as that in the second embodiment, and a description thereof will be omitted.

  The in-vehicle information terminal 1701 predicts the traffic volume at the next time point from the amount of pheromone received from the in-vehicle information terminal 1700 which is a pheromone field server (prediction processing result), and searches for a route so as to avoid traffic congestion.

  The information sharing system, the information sharing server, the information sharing method, and the information sharing program according to the present invention can be deleted in real time without taking time and effort to delete information whose use value is lost, and the reliability of the latest and freshness is high. Since information can be provided, it is useful for an information sharing system, an information sharing server, an information sharing method, an information sharing program, and the like that can share information among a plurality of users.

It is a figure which shows the structure of the information sharing system which concerns on the 1st Embodiment of this invention. It is a figure for demonstrating the specific example at the time of reflecting the strength of the digitized information in the information sharing server which concerns on the 1st Embodiment of this invention on a map. It is a figure which shows the histogram which showed the strength of the information transmission program field and its peripheral information in the information sharing server which concerns on the 1st Embodiment of this invention, and the strength of the information totaled. It is a figure for demonstrating the strength of the information attenuate | damped with progress of time in the information sharing server which concerns on the 1st Embodiment of this invention. It is a figure for demonstrating the strength of the information transmitted to an adjacent information transmission program field or an information sharing server with progress of time in the information sharing server which concerns on the 1st Embodiment of this invention. It is a figure which shows the structure of the information sharing server which concerns on the 1st Embodiment of this invention. The processing from the calculation of the information strength in the information sharing server according to the first embodiment of the present invention to the transmission of the in-vehicle program information attached with the map information in which the information strength is arranged to the in-vehicle information terminal will be described. FIG. It is a figure for demonstrating the route search using the information sharing system which concerns on the 1st Embodiment of this invention. It is a figure for demonstrating the route search using the information sharing system which concerns on the 1st Embodiment of this invention. It is a figure for demonstrating the traffic congestion avoidance application using the information sharing system which concerns on the 1st Embodiment of this invention. It is a figure for demonstrating the danger prediction application using the information sharing system which concerns on the 1st Embodiment of this invention. It is a figure for demonstrating the service area utilization assistance application using the information sharing system which concerns on the 1st Embodiment of this invention. It is a figure which shows the structure of the information sharing system which concerns on the 2nd Embodiment of this invention. It is a figure which shows the structure of the information sharing system which concerns on the 3rd Embodiment of this invention. It is a figure which shows the structure of the information sharing system which concerns on the 4th Embodiment of this invention. It is a figure which shows the structure of the information sharing system which concerns on the 5th Embodiment of this invention. It is a figure which shows the structure of the information sharing system which concerns on the 6th Embodiment of this invention.

Explanation of symbols

100, 1300, 1400, 1500, 1600, 1700, 1701 In-vehicle information terminal 101, 1301, 1401, 1501, 1502 External sensor (region information acquisition device)
102, 102A, 102B, 102C, 102D, 103, 1001, 1101, 1102, 1200 Information sharing server 200 First area (information transmission field)
201 Second area (information transmission field)
202 Road 203, 204, 205 Information transmission program field 400, 401, 402, 500, 501, 502 Information transmission program field group 600 Receiving section (receiving means)
601 Calculation unit (calculation means)
602 Placement unit (placement means)
603 Attachment (attachment means)
604 Transmission unit (transmission means)
800A, 800B, 1604, 1702, 1703, A, A ', B, B', C, C ', D, E, F Vehicle 1000, 1100 Arrow 1302, 1402 VICS center device 1503 Traveling direction 1601 Probe car terminal 1602 Probe Car center device 1603 Probe car G, G 'Bike H Human

Claims (26)

An in-vehicle information terminal mounted on the vehicle for transmitting at least one or more of vehicle information related to own vehicle and in-vehicle program information for acquiring shared information useful for traveling of the vehicle;
An area information acquisition device for acquiring area information which is information on the traffic volume of the vehicle and the traffic volume around the road;
Based on at least one of the vehicle information received from the in-vehicle information terminal and the region information received from the region information acquisition device, the vehicle abundance is acquired, and the acquired abundance is included. Calculating a time function abundance by a time function, calculating a time function transfer amount to be transmitted to an adjacent region as time passes by a time function including the calculated time function abundance, and calculating the time function When the presence amount and the time function transmission amount are arranged at corresponding positions on the segmented map and the in-vehicle program information is received from the in-vehicle information terminal, the time function existence amount and the time are included in the in-vehicle program information. Attaching the map information of the map where the function transfer amount is arranged, and an information sharing server for transmitting to the in-vehicle information terminal,
Information sharing system provided. The area information includes information on exhaust gas abundance and traffic volume of pedestrians and other people,
The information sharing server is based on at least one of the vehicle information received from the in-vehicle information terminal and the region information received from the region information acquisition device, or a vehicle abundance or person, vehicle, exhaust The information sharing system according to claim 1, wherein a gas function is acquired, and a time function existence quantity based on a time function including the acquired quantity is calculated. At least one or more information of vehicle information on the vehicle from outside and vehicle-mounted program information for acquiring shared information useful for traveling of the vehicle, and the traffic volume of the vehicle and the vicinity of the travel path Receiving means for receiving area information which is information of
Based on at least one or more of the vehicle information and the region information received by the receiving means, a vehicle abundance is obtained, and a time function abundance by a time function including the obtained abundance is obtained. Calculating means for calculating a time function transfer amount to be transmitted to an adjacent region as time passes by a time function including the calculated time function existence amount;
Arranging means for arranging the time function existing amount calculated by the calculating means and the time function transfer amount at corresponding positions on the subdivided map;
When receiving the in-vehicle program information by the receiving means, an attaching means for attaching the map information of the map in which the time function existence amount and the time function transmission amount are arranged by the arranging means to the in-vehicle program information;
Transmitting means for transmitting the in-vehicle program information to which the map information is attached by the attachment means to the outside;
Information sharing server provided. The receiving means includes at least one or more of vehicle information related to a vehicle from outside and vehicle-mounted program information for acquiring shared information useful for traveling of the vehicle, and a traveling path and traveling of the vehicle Receive area information, which is information on traffic volume around the road, exhaust gas abundance and traffic volume of pedestrians and others,
The calculation means obtains and acquires a vehicle abundance or a person, a vehicle, and an exhaust abundance based on at least one of the vehicle information and the area information received by the receiving means. The information sharing server according to claim 3, wherein a time function abundance based on a time function including the abundance is calculated. At least one or more information of vehicle information on the vehicle from outside and vehicle-mounted program information for acquiring shared information useful for traveling of the vehicle, and the traffic volume of the vehicle and the vicinity of the travel path Receiving region information which is information of
Based on at least one or more information of the received vehicle information and area information, the vehicle abundance is acquired, and a time function abundance is calculated by a time function including the acquired abundance Calculating a time function transmission amount to be transmitted to an adjacent region as time elapses due to a time function including the time function existing amount,
Placing the calculated time function abundance and the time function transfer amount at corresponding positions on the subdivided map;
When receiving the in-vehicle program information from the outside, attaching the map information of the map in which the time function existence amount and the time function transmission amount are arranged to the in-vehicle program information;
Transmitting the in-vehicle program information to which the map information is attached to the outside,
An information sharing method. In the receiving step, at least one or more information of vehicle information related to the vehicle from outside and vehicle-mounted program information for obtaining shared information useful for traveling of the vehicle, and a traveling path of the vehicle, and Receive area information that is information on traffic volume around the road, exhaust gas abundance and traffic volume of pedestrians and others,
In the calculating step, based on at least one or more information of the received vehicle information and the area information, a vehicle abundance or a person, a vehicle, an exhaust gas abundance is obtained, and the obtained The information sharing method according to claim 5, wherein a time function abundance is calculated based on a time function including the abundance. At least one or more information of vehicle information on the vehicle from outside and vehicle-mounted program information for acquiring shared information useful for traveling of the vehicle, and the traffic volume of the vehicle and the vicinity of the travel path Receiving region information which is information of
Based on at least one or more information of the received vehicle information and area information, the vehicle abundance is acquired, and a time function abundance is calculated by a time function including the acquired abundance Calculating a time function transmission amount to be transmitted to an adjacent region as time elapses due to a time function including the time function existing amount,
Placing the calculated time function abundance and the time function transfer amount at corresponding positions on the subdivided map;
When receiving the in-vehicle program information from the outside, attaching the map information of the map in which the time function existence amount and the time function transmission amount are arranged to the in-vehicle program information;
Transmitting the in-vehicle program information to which the map information is attached to the outside,
An information sharing program for execution. In the receiving step, at least one or more information of vehicle information related to the vehicle from outside and vehicle-mounted program information for obtaining shared information useful for traveling of the vehicle, and a traveling path of the vehicle, and Receive area information that is information on traffic volume around the road, exhaust gas abundance and traffic volume of pedestrians and others,
In the calculating step, based on at least one or more information of the received vehicle information and the area information, a vehicle abundance or a person, a vehicle, an exhaust gas abundance is obtained, and the obtained The information sharing program according to claim 7, wherein a time function abundance is calculated based on a time function including the abundance. An information device for transmitting information device program information for obtaining shared information useful for service use; and
An area information acquisition device for acquiring area information, which is information on the traffic volume of the vehicle and the traffic volume around the road;
Based on at least one or more pieces of information from the region information received from the region information acquisition device, to acquire a vehicle presence amount, to calculate a time function presence amount by a time function including the acquired presence amount, A time function transfer amount that is transmitted to an adjacent region as time passes by the time function including the calculated time function abundance is calculated, and the calculated time function existence amount and the time function transfer amount are subdivided. When the information device program information is received from the information device, the time function existing amount and the time function transfer amount are arranged in the information device program information. An information sharing server that attaches map information and transmits to the information device,
Information sharing system provided. The area information includes information on exhaust gas abundance and traffic volume of pedestrians and other people,
The information sharing server acquires a vehicle presence amount based on at least one or more pieces of the region information received from the region information acquisition device, and a time function based on a time function including the acquired presence amount The information sharing system according to claim 9, wherein the presence amount is calculated. Receiving means for receiving information equipment program information for acquiring shared information useful for service use from the outside, and area information that is information on the travel path of the vehicle and the traffic volume around the travel path;
Based on the area information received by the receiving means, the vehicle abundance is acquired, a time function abundance is calculated by a time function including the acquired abundance, and the calculated time function abundance is calculated. A calculation means for calculating a time function transmission amount to be transmitted to an adjacent region with the passage of time by the time function including;
Arranging means for arranging the time function existing amount calculated by the calculating means and the time function transfer amount at corresponding positions on the subdivided map;
An attachment unit for attaching the map information of the map on which the time function existence amount and the time function transmission amount are arranged by the arrangement unit to the information device program information when the information unit program information is received by the reception unit; ,
Transmitting means for transmitting the information equipment program information to which the map information is attached by the attachment means to the outside;
Information sharing server provided. The receiving means includes information equipment program information for acquiring shared information useful for service use from the outside, traffic of the vehicle and traffic around the vehicle, exhaust gas abundance, pedestrians and other people's traffic. Receive area information that is traffic information,
The calculation means acquires the abundance of people, vehicles, and exhaust gas based on the region information received by the reception means, and calculates a time function abundance by a time function including the obtained abundance. The information sharing server according to claim 11. Receiving information equipment program information for acquiring shared information useful for service use from the outside and area information which is information on the road of the vehicle and traffic around the road; and
Based on the received area information, the vehicle abundance is acquired, a time function abundance is calculated based on the time function including the acquired abundance, and the time function including the calculated time function abundance is calculated. Calculating a time function transmission amount to be transmitted to an adjacent region over time;
Placing the calculated time function abundance and the time function transfer amount at corresponding positions on the subdivided map;
When receiving the information equipment program information from the outside, attaching the map information of the map in which the time function existence amount and the time function transmission amount are arranged to the information equipment program information;
Transmitting the information device program information to which the map information is attached to the outside,
An information sharing method. In the receiving step, information equipment program information for obtaining shared information useful for service use from the outside, traffic volume of the vehicle and traffic around the road, exhaust gas abundance, pedestrians and other persons Area information that is traffic information of
14. The calculating step acquires a presence amount of a person, a vehicle, and an exhaust gas based on the received area information, and calculates a time function existence amount by a time function including the acquired existence amount. Information sharing method described in 1. Receiving information equipment program information for acquiring shared information useful for service use from the outside and area information which is information on the road of the vehicle and traffic around the road; and
Based on the received area information, the vehicle abundance is acquired, a time function abundance is calculated based on the time function including the acquired abundance, and the time function including the calculated time function abundance is calculated. Calculating a time function transmission amount to be transmitted to an adjacent region over time;
Placing the calculated time function abundance and the time function transfer amount at corresponding positions on the subdivided map;
When receiving the information equipment program information from the outside, attaching the map information of the map in which the time function existence amount and the time function transmission amount are arranged to the information equipment program information;
Transmitting the information device program information to which the map information is attached to the outside,
An information sharing program for execution. In the receiving step, information equipment program information for obtaining shared information useful for service use from the outside, traffic volume of the vehicle and traffic around the road, exhaust gas abundance, pedestrians and other persons Area information that is traffic information of
16. In the calculating step, an abundance of a person, a vehicle, and exhaust gas is acquired based on the received area information, and a time function abundance based on a time function including the acquired abundance is calculated. Information sharing program described in. An area information acquisition device for acquiring area information, which is information on the traffic volume of the vehicle and the traffic volume around the road;
Based on the area information acquired by the area information acquisition device, the vehicle abundance is acquired, a time function abundance is calculated based on a time function including the acquired abundance, and a time function according to a predetermined time function is calculated. The time function transfer amount transmitted from the adjacent area as time passes is calculated, the calculated time function existence amount, the time function transfer amount, and the time function remaining amount that has been arranged and remains at the present time An in-vehicle information terminal that places the device at a corresponding position on the segmented map,
Information sharing system provided. The area information includes exhaust gas abundance and traffic volume of pedestrians and other people,
The in-vehicle information terminal acquires an abundance of a vehicle or an abundance of a person, a vehicle, and an exhaust gas based on the area information acquired by the area information acquisition device, and a time function including the acquired abundance The information sharing system according to claim 17, wherein a time function abundance is calculated according to. An in-vehicle information terminal mounted on the vehicle for transmitting vehicle information relating to the own vehicle;
An area information acquisition device that receives the vehicle information transmitted by the in-vehicle information terminal, and acquires area information that is information on a traffic volume of the vehicle and traffic around the road;
Based on at least one or more of the vehicle information and the region information received from the region information acquisition device, a vehicle presence amount is acquired, and a time function presence amount by a time function including the acquired presence amount Calculating a time function transfer amount transmitted from an adjacent region as time elapses according to a predetermined time function, and calculating the time function existence amount, the time function transfer amount, and previously arranged An information sharing server that arranges the remaining amount of time function remaining at the present time at a corresponding position on the subdivided map, and transmits map information of the arranged map to the in-vehicle information terminal,
Information sharing system provided. The area information includes exhaust gas abundance and traffic volume of pedestrians and other people,
The information sharing server acquires an abundance of a vehicle or an abundance of a person, a vehicle, and exhaust gas based on at least one of the vehicle information and the area information received from the area information acquisition device. The information sharing system according to claim 19, wherein a time function abundance based on a time function including the obtained abundance is calculated. An in-vehicle information terminal mounted on the vehicle for transmitting vehicle information relating to the own vehicle;
The vehicle information transmitted by the in-vehicle information terminal is received, area information that is information on a traffic volume of the vehicle and traffic around the road is acquired, and at least one of the vehicle information and the area information is acquired. Based on the information of the vehicle, the vehicle abundance is acquired, a time function abundance is calculated based on the time function including the acquired abundance, and is transmitted from an adjacent region as time passes by a predetermined time function. The time function transfer amount is calculated, and the calculated time function existence amount, the time function transfer amount, and the time function remaining amount that has been arranged and remains at the present time correspond to the subdivided map. An area information acquisition device arranged at a position and transmitting map information of the arranged map to the in-vehicle information terminal;
Information sharing system provided.   The region information acquisition device receives the vehicle information transmitted by the in-vehicle information terminal, and information on the traffic volume of the vehicle and the traffic volume around the road, the amount of exhaust gas present, and the traffic volume of pedestrians and other people. The region information is obtained, and the vehicle existence amount or the existence amount of the person, the vehicle, and the exhaust gas is obtained based on at least one information of the vehicle information and the region information. The information sharing system according to claim 21, wherein a time function existence amount is calculated based on a time function including the amount. An area information providing terminal that acquires area information that is information on a traffic volume of a vehicle and traffic around the road, and transmits the acquired area information to the outside;
Based on the area information transmitted from the area information providing terminal, the vehicle abundance is acquired, a time function abundance by a time function including the acquired abundance is calculated, and a time function by a predetermined time function is calculated. The time function transfer amount transmitted from the adjacent area as time passes is calculated, the calculated time function existence amount, the time function transfer amount, and the time function remaining amount that has been arranged and remains at the present time An information providing server that transmits the map information of the arranged map to an in-vehicle information terminal mounted on a vehicle traveling on the traveling path,
Information sharing system provided. The area information providing terminal acquires area information, which is information on traffic volume of a vehicle and its surroundings, exhaust gas abundance and traffic volume of pedestrians and other people, and the acquired area information is Send to
The information providing server obtains an abundance of a vehicle or an abundance of a person, a vehicle, and an exhaust gas based on the area information transmitted from the area information provision terminal, and a time function including the obtained abundance 24. The information sharing system according to claim 23, which calculates a time function abundance according to. An in-vehicle information terminal mounted on the vehicle for transmitting vehicle information relating to the own vehicle;
When mounted on another vehicle other than the vehicle and the other vehicle travels in a predetermined area, the vehicle information transmitted from the in-vehicle information terminal is received, and the vehicle abundance is determined based on the vehicle information. Obtaining a time function abundance based on a time function including the obtained abundance, calculating a time function transmission amount transmitted from an adjacent region as time passes by a predetermined time function, and calculating The time function existing amount, the time function transfer amount, and the time function remaining amount that has been previously arranged and remains at the present time are arranged at corresponding positions on the subdivided map, and the map of the arranged map An information providing terminal for transmitting map information to the in-vehicle information terminal;
Information sharing system provided. The information providing terminal is mounted on another vehicle other than the vehicle, and receives the vehicle information transmitted from the in-vehicle information terminal when the separate vehicle travels in a predetermined area, and based on the vehicle information 26. The information sharing system according to claim 25, wherein an abundance of a vehicle or an abundance of a person, a vehicle, and an exhaust gas is acquired, and a time function abundance based on a time function including the acquired abundance is calculated.

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