JP2006079504A - Travel history collection system and onboard device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a travel history collection system that can accurately determine a travel history to be transmitted and efficiently transmit it within a limited period. <P>SOLUTION: The travel history collection system comprises a travel history DB 13 for recording a travel history of a vehicle generated from travel data from a vehicle sensor 2, a transmission section determination part 14 for determining a transmission section from the recorded travel history, and a travel history transmission part 15 for transmitting the travel history in the determined transmission section to a center 7. The transmission section determination means 15 determines the transmission section by setting the point where the travel speed falls to a threshold first as a start point of transmission section determination and setting the point where the travel speed reaches the threshold later as an end point of transmission section determination if the state reaching the threshold lasts over a predetermined period. Even when the travel speed reaches the threshold, it does not determine the end point of transmission section determination unless the predetermined period is exceeded, so that the determination is accurate and the transmission frequency is low to enable efficient transmission. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a travel history collection system that collects a travel history of a vehicle and transmits the travel history to a center device using wireless communication means, and an in-vehicle device used therefor.

  Collecting and accumulating the vehicle travel history with a terminal device mounted on the vehicle, and storing it in a narrow area wireless communication means between the roadside device and the terminal device or a wide area wireless communication means such as a mobile phone A technique is known in which any one of them is transmitted to a center apparatus to determine a traffic congestion state of a road traffic network.

  However, in the past, when the travel history of the vehicle is transmitted using the narrow area wireless communication, the travel history cannot be transmitted unless the vehicle travels to a position where the roadside device is located, and the travel collected by the center device. There is a problem that the collection time is delayed in the history, and when the vehicle travel history is transmitted using wide area wireless communication, the collection time delay is eliminated and the vehicle travel history can be transmitted immediately. However, if the number of vehicles that transmit travel history is increased in order to collect the traffic situation of the entire road network, a large burden is placed on the wide area wireless communication network. In the worst case, the wide area wireless communication network is punctured. There is a problem that the wide area wireless communication means cannot be used.

  Therefore, conventionally, when dealing with such problems and transmitting the travel history from the terminal device to the center device, the transmission frequency and the amount of transmission data are reduced by the following methods, respectively, and the wide area wireless communication means is effective. It is considered to be used.

  That is, in the first method, the traveling speed is constantly monitored, and when the traveling speed changes greatly, it is determined that the traveling speed ends before and after that, and the traveling speed of the section from the beginning to the end is fixed. And transmitting it as the traveling speed of that section, or averaging and transmitting the value as the traveling speed of that section (for example, see Patent Document 1).

  According to this method, when the travel speed changes greatly, the predetermined characteristics regarding the travel speed are transmitted and the travel speed is not transmitted while the travel speed does not change greatly. The transmission frequency of the traveling speed is less than before, and the amount of data is fixed or averaged in the predetermined section, so it is reduced, and it can be used effectively even when using wide area wireless communication be able to.

  In the second method, when the traveling speed, traveling direction, and other information are transmitted to the center device, the transmission interval and data amount are being transmitted by the traffic condition of the vehicle and other terminal devices having the same role. It is a method of making it differ according to whether it is different (for example, refer patent document 2).

  According to this method, during a traffic jam, the transmission interval for transmitting the traveling speed and other information is wider than in a normal traveling state, and when another terminal device is transmitting, the other terminal device Information that has already been transmitted is not transmitted, and only information that has not been transmitted by other terminal devices can be transmitted. Therefore, the frequency of transmission from the terminal device to the center device and the amount of data are smaller than in the past. As with the first method, it is possible to effectively utilize wide area wireless communication.

  The third method obtains traffic information (congestion information) of the road network from the center device, predicts the road condition of the road section to travel, and then from the travel history obtained by actually traveling. This is a method in which the road condition is determined and compared with the prediction result, and the actual travel history of the corresponding road section is transmitted to the center device only when the predicted value and the actually measured value are different from each other as a result of the comparison (for example, patent Reference 3).

  According to this method, only when the traffic information acquired from the center device and the traffic information actually obtained by traveling are different from each other, the traffic information obtained by actually traveling is transmitted to the center device. Therefore, it is not necessary to transmit at other times, and it is only necessary to transmit a different part (data) when transmitting, even if using wide area wireless communication as in the first and second methods, It can be used effectively.

In this way, using the three methods that have been considered in the past, the transmission frequency and the amount of data can be reduced respectively, and even if a wide area wireless communication network is used, it can be used effectively without being punctured. There is a possibility.
JP 2000-504859 gazette JP 2000-90396 A Special Table 2000-507732

  However, the above three conventional methods have the following problems.

  First, the method described in Patent Document 1 employs a method of transmitting a travel history of a travel section in which the speed data acquired in the terminal device is equal to or less than a threshold value for transmission determination to the center device. When the speed data changes in the vicinity, there may be a continuous transmission interval to the center device and a non-transmission interval, which may greatly increase the load due to the transmission processing to the center in the terminal device. In addition, when taking an average of the traveling speed in a certain section, depending on the traveling state, the average value may not match the actual road condition. There is a problem in that the travel section to be transmitted to the device may not be determined accurately.

  Next, in the method described in Patent Document 2, in the method of characterizing the speed data recorded by the terminal device, for example, averaging or leveling with the value of the speed data, the same characteristic section If the vehicle continues for a very long time or if the vehicle cannot move due to traffic jams, it may take time before the travel history is transmitted from the terminal device to the center, and may not be used at the center as information is required. There is. Similarly, there is a similar problem in the transmission method when the accumulated data size of the travel history is accumulated at a certain size.

  Moreover, in what was described in patent document 3, in the terminal device mounted in the motor vehicle which collects driving | running | working histories, the latest road condition information is acquired from a center apparatus, the change of road condition is estimated, and it is driving now When it is determined that the road traffic situation has changed as a result of comparison with the driving history of the road section, the road section where the latest road situation is always gathered at the center in the method of transmitting the driving history of the corresponding road section from the terminal device to the center For road sections that are not so, there is a problem that it is not possible to correctly judge changes in road conditions because comparison with road conditions predicted by the center is not possible, or comparison is not possible because the road conditions are unknown .

  The present invention has been made in response to these problems, and provides a travel history collection / transmission device capable of accurately determining a travel history to be transmitted and efficiently transmitting it at a limited time. .

  A travel history collection system according to the present invention includes a vehicle sensor that detects travel data of a vehicle, a recording unit that generates and records a travel history of the vehicle based on travel data from the vehicle sensor, and a transmission section based on the recorded travel history. A transmission section determining means for performing the determination, and a travel history transmitting means for transmitting the travel history of the determined transmission section to the center, wherein the transmission section determining means first causes the travel speed included in the travel history to be below a threshold value. The point where the speed data is equal to or higher than the threshold when the speed data is equal to or higher than the threshold and the state equal to or higher than the threshold is continued for a predetermined period. The transmission section is determined as the end point of the transmission section determination.

  With this configuration, when the traveling speed first falls below the threshold value, that point is set as the starting point for transmission section determination. As long as it does not exceed, it is not determined as the end point of transmission section determination, so until that time it will be determined as a so-called traffic jam, accident etc. section below the threshold, accurately determine the section such as traffic jam, accident etc. Can be sent.

  In the travel history collection system of the present invention, the predetermined specified period is either a predetermined specified travel distance or a predetermined specified travel time after the travel speed becomes equal to or higher than a threshold, or , Having a configuration that is both.

  With this configuration, there is an effect that a predetermined specified period can be arbitrarily set by distance or time.

  The travel history collection system of the present invention has a configuration in which the travel history includes a history representing road conditions such as traffic jams and accidents.

  With this configuration, it is possible to easily transmit a situation such as a vehicle traffic jam or an accident.

  In addition, the travel history collection system of the present invention has a configuration in which the transmission section determination means does not determine the transmission section determination end point when the predetermined speed does not continue even after the traveling speed becomes equal to or higher than the threshold. .

  With this configuration, even if a traveling speed that is equal to or higher than the threshold value is detected within a specified period, it is not detected as a traffic jam, accident, etc., and the opportunity for transmission is reduced accordingly, and traffic can be reduced.

  In the travel history collection system of the present invention, when the transmission section determination means determines the end point of the transmission section determination in the travel history transmission means, the travel history of the transmission section from the determination start point to the end point is centered. It has the structure which transmits to.

  With this configuration, when the end point of the transmission section determination is determined, the travel history so far is transmitted at once, compared with the case where the travel history is always transmitted, and transmitted even though there is no traffic jam. The transmission traffic can be reduced as compared with the case where the transmission is performed.

  In the travel history collection system of the present invention, when the transmission section exceeds a predetermined determination section minimum allowable value in the travel history transmission means, the travel history of the transmission section is transmitted to the wide area wireless communication means or the narrow area wireless communication. The information is transmitted to the center using the means, and when it does not exceed, it is transmitted through the narrow area wireless communication means.

  With this configuration, even if the travel speed once falls below the threshold and then rises above the threshold, it does not go beyond the threshold for the specified period, and even if the transmission section becomes extremely long, the transmission section is the minimum allowable judgment section. When the value is exceeded, the travel history of the transmission section is transmitted by the wide area wireless communication means or the narrow area wireless communication means, and if there is a traffic jam, an accident, etc., the travel history can be transmitted appropriately. It has the action.

  The travel history collection system of the present invention has a configuration in which the determination section minimum allowable value is one or both of a predetermined determination section minimum allowable distance and a predetermined determination section minimum allowable time. .

  With this configuration, it is possible to arbitrarily set a minimum allowable value in time and / or distance, or both, and transmit a travel history when the minimum allowable value is exceeded.

  Further, the travel history collection system according to the present invention provides a total of these non-continuous periods when the travel history transmitting means has a state that does not continue beyond a predetermined specified period even when the travel speed becomes a threshold value or more. And at least one of the total periods in other states, and based on the ratio between the calculated one period and the transmission section, the traveling history of the transmission section is transmitted by the wide area wireless communication means, or the narrow area wireless communication means It has the structure which selects whether it transmits with a communication means.

  With this configuration, even if there is a traffic jam, accident, etc., if it is not so severe, it can be transmitted using narrow area wireless communication means, and if it is severe, it can be transmitted immediately using wide area wireless communication means. Wide area wireless communication means and narrow area wireless communication means can be used efficiently.

  Further, the travel history collection system of the present invention uses the wide area wireless communication means when the ratio between the calculated one period and the transmission section is larger than the predetermined transmission judgment reference value, and the narrow area wireless communication means when the ratio is small. It has a configuration to transmit.

  With this configuration, as described above, the wide-area wireless communication means and the narrow-area wireless communication means can be used properly according to whether the traffic jam is severe or not.

  In the travel history collection system of the present invention, even when the travel history transmission means does not determine the end point of the transmission section, when the transmission delay allowable value is reached from the determination start point of the transmission section, A transmission history transmission operation is started.

  With this configuration, even when the end point of the transmission section is not determined, when the transmission delay allowable value is reached from the determination start point of the transmission section, the transmission operation of the transmission history up to that time is started. Delays can be prevented in advance.

  In addition, the traveling history collection system of the present invention has a configuration in which the transmission delay allowable value is either a predetermined distance or a predetermined time from the determination start point of the transmission section, or both.

  With this configuration, the transmission delay allowable value can be arbitrarily set in time, distance, or both.

  Further, the travel history collection system of the present invention, when the transmission history transmission operation, when the section up to the transmission delay allowable value exceeds a predetermined determination section minimum allowable value, the travel history of the section up to the transmission delay allowable value is displayed. When the transmission is performed using the wide area wireless communication means and the predetermined determination section minimum allowable value is not exceeded, the transmission is performed using the narrow area wireless communication means.

  With this configuration, when the section up to the transmission delay allowable value exceeds the predetermined determination section minimum allowable value, the travel history of the section up to the transmission delay allowable value is transmitted using the wide area wireless communication means, When the determination section minimum allowable value is not exceeded, transmission can be performed using the narrow area wireless communication means, and the wide area wireless communication means and the narrow area wireless communication means can be used efficiently.

  In addition, the travel history collection system of the present invention has a state in which the transmission history transmission operation does not continue beyond a predetermined specified section even when the travel speed up to the transmission delay allowable value is equal to or greater than the threshold. Calculating at least one of the total of these non-continuing sections and the total of the other sections, and based on the ratio between the calculated one section and the section up to the transmission delay allowable value, the travel history up to the transmission delay allowable value Has a configuration including an operation of selecting whether to transmit by the wide area wireless communication means or the narrow area wireless communication means.

  With this configuration, based on the ratio between the calculated one section and the section up to the allowable transmission delay value, the travel history up to the allowable transmission delay value is transmitted by the wide area wireless communication means or transmitted by the narrow area wireless communication means. Can be selected, and wide-area wireless communication means and narrow-area wireless communication means can be used efficiently.

  The travel history collection system according to the present invention transmits the transmission history every time the predetermined transmission delay allowable value is reached even after the predetermined transmission delay allowable value is reached from the determination start point of the transmission section. Each of the travel histories between the allowable delay values is transmitted.

  With this configuration, if there is a transmission delay, an operation of automatically transmitting the travel history up to that time is started every time the transmission delay allowable value is reached, and transmission delay can be prevented in advance.

  In the travel history collection system of the present invention, when the travel history transmitting means determines the transmission section determination end point after reaching the predetermined transmission delay allowable value, the transmission history determination is performed from the point where the transmission delay allowable value is reached. The travel history of the section up to the end point is transmitted by either the wide area wireless communication means or the narrow area wireless communication means according to the transmission status of the travel history of the section until the transmission delay allowable value is reached.

  With this configuration, when the travel history up to the transmission delay allowable value is transmitted, when the subsequent travel history is transmitted, the wide area wireless communication means and the narrow area wireless communication means according to the transmission status of the travel history up to the transmission delay allowable value Respectively, and the wide area wireless communication means and the narrow area wireless communication means can be utilized more efficiently.

  In the travel history collection system of the present invention, the travel section determination means includes a detection means for detecting a right / left turn point existing between a determination start point and a determination end point of the transmission section, and a right / left turn point by the detection means. When detected, the vehicle has a configuration including a right / left turn point as a temporary end point of the determination section, and means for detecting a travel history up to the determination end point.

  With this configuration, if there is a right turn or a left turn in the travel history, it can also be transmitted as the travel history.

  Further, the travel history collection system of the present invention has different conditions and constants for determining the transmission section determined by the transmission section determination means and the wireless communication means selected by the travel history transmission means, depending on the type of road being traveled. It has a configuration that can be set.

  With this configuration, by setting conditions and constants as appropriate, optimal conditions and constants can be set according to the type of road, for example, general roads such as highways, roads dedicated to automobiles, and prefectural roads. It is possible to accurately transmit traffic information on each road.

  In addition, the travel history collection system of the present invention includes, as constants, threshold values for determining the transmission section determination process start point and end point, end determination travel section length, travel time, determination section minimum allowable distance, and determination section minimum. It has a configuration including at least one of a permissible time, a transmission determination reference value, a permissible transmission delay, a permissible transmission delay, a permissible distance for narrow-area wireless communication, and a permissible distance for narrow-area wireless communication.

  With this configuration, these constants can be set appropriately, and the constants can be optimally selected.

  Further, the travel history collection system of the present invention is configured such that when the travel history transmission means selects the narrow area wireless communication means and transmits the travel history using the narrow area wireless communication means, the roadside capable of communicating with the narrow area wireless communication means The vehicle travels to a position close to the aircraft and waits for transmission of a travel history until it can communicate with the roadside device.

  With this configuration, when the narrow-area wireless communication means is selected, transmission is waited until communication with the roadside machine becomes possible, and when the communication with the roadside machine becomes possible, the travel history to be transmitted is stored. Will be sent.

  The travel history collection system of the present invention uses the wide area wireless communication means when the state of waiting for transmission exceeds one or both of the predetermined narrow area wireless communication communication waiting allowable distance and the waiting allowable time. And transmitting a travel history.

  With this configuration, when waiting for a long time to become communicable with the roadside device, and when the state exceeds one or both of the predetermined narrow area wireless communication waiting distance, waiting time, and both Automatically transmits the travel history to be traveled using the wide-area wireless communication means instead of the narrow-area wireless communication means, thereby efficiently using the wide-area wireless communication means and the narrow-area wireless communication means. A travel history can be transmitted.

The present invention includes a vehicle sensor that detects vehicle travel data, a recording unit that generates and records a vehicle travel history based on the travel data from the vehicle sensor, and a transmission section that determines a transmission section from the recorded travel history. A determination means and a travel history transmission means for transmitting the travel history of the determined transmission section to the center. When the travel speed included in the travel history first falls below a threshold, the transmission section determination means Is set as the transmission point determination start point, and then the point where the speed data is equal to or greater than the threshold is determined when the speed data is equal to or greater than the threshold and the state equal to or greater than the threshold is continued for a predetermined period. The transmission section is determined as the end point, and when the traveling speed first falls below the threshold value, that point is set as the transmission section determination start point, and then the speed data is the threshold value. Even if it becomes above, it will not be determined as the end point of transmission section determination unless the state above the threshold exceeds a predetermined specified period. , It can be transmitted to the center, not only can the transmission frequency be reduced, but also has an effect that the traffic jam section can be determined more efficiently.

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

  FIG. 1 is a schematic block diagram showing a travel history collection system according to an embodiment of the present invention.

  In the travel history collection system according to the embodiment of the present invention, a vehicle for which travel history is collected includes a terminal device 1 for traveling history collection, a vehicle sensor 2, a narrow area wireless communication means 3, a wide area The wireless communication means 4 is mounted.

  The terminal device 1 for collecting the travel history generates a travel history from the vehicle information collecting unit 11 that acquires the operation information of the vehicle detected by the vehicle sensor 2 and the vehicle information acquired by the vehicle information collecting unit 11, and travel history database A travel history recording unit 12 that records in a travel history DB 13 (hereinafter referred to as a travel history DB), a travel history DB 13 that accumulates the travel history, and a transmission section determination unit 14 that detects a transmission section from the travel history are provided.

  Further, when the terminal device 1 has a transmission section in the travel history, the terminal device 1 transmits the travel data created based on the travel history to the travel history collection center device 7 through the narrow area wireless communication means 3 and the roadside device 5. Alternatively, a selection function for selecting whether to transmit to the traveling history collection center device 7 through the wide area wireless communication means 4 and the wide area wireless communication antenna 6 and transmission data to be transmitted from the traveling history to the traveling history collection center device 7 A travel history transmitting unit 15 having a function to be created and a control function for controlling the narrow area wireless communication unit 3 and the wide area wireless communication unit 4 is provided.

  The vehicle sensor 2 includes a GPS device 21 that measures the position using a satellite, an angular velocity sensor 22 that detects the degree of turning of the vehicle, a vehicle speed sensor 23 that detects the speed of the vehicle, and the like. It has a function to detect the running speed.

  The narrow area wireless communication means 3 has a function of performing data communication with a so-called roadside device 5 that is installed on a road such as an optical beacon, a radio wave beacon, or a DSRC, by narrow area wireless communication.

  The wide area wireless communication means 4 has a function of performing data communication by wireless communication with a wide area wireless communication infrastructure such as a mobile phone or a digital MCA.

  The center side that collects the travel history includes a roadside device 5, an antenna 6 for wide area wireless communication, and a travel history collection center device 7.

  Here, the roadside device 5 has a function of performing data communication with the narrow area wireless communication means 4 with the narrow area wireless communication means 3 mounted on the vehicle. The antenna 6 for wide area wireless communication has a function of performing data communication by wireless communication with a wide area wireless communication means 4 such as a mobile phone or a digital MCA mounted on a vehicle.

  The travel history collection center device 7 includes a plurality of travel history collection terminal devices 1 through a narrow-range wireless communication means 3 and a wide-area wireless communication means 4 via a roadside device 5 and a wide-area wireless communication antenna 6, respectively. And the road conditions such as the time required for traveling between traffic points and traffic conditions based on information such as position information, speed information, and driving direction included in the received vehicle travel history. And a function of accumulating road information such as the calculated required time and traffic congestion for each time zone in which the terminal section 1 detects the corresponding road section and travel history.

  Next, the operation of the travel history collection system in one embodiment of the present invention will be described.

  When the vehicle sensor 2 detects a position, a traveling speed, and a traveling direction, it is collected by the vehicle information collecting unit 11 of the terminal device 1 and recorded in the traveling history DB 13 via the traveling history recording unit 12 as a traveling history. The travel history recorded in the travel history DB 13 is supplied to the transmission section determination unit 14 to determine whether there is a transmission section in the travel history. If there is a transmission section, the traveling history up to that time is sent to the traveling history transmitting unit 15 and transmitted to the center side using either the narrow area wireless communication means 3 or the wide area wireless communication means 4. The travel history is received via the wide-area wireless communication antenna 6 or the roadside device 5 and collected and integrated in the travel history collection center device 7 to generate traffic information such as traffic jam information.

  Here, how to determine the transmission section and whether the travel history is transmitted via the narrow-area wireless communication means 3 or the wide-area wireless communication means 4 is schematically shown. FIG. 2 to FIG.

  Hereinafter, using FIG. 2 to FIG. 5, how to determine the transmission section, and how the traveling history transmission unit 15 selects the narrow area wireless communication means 3 or the wide area wireless communication means 4 at the time of transmission. Will be explained.

  First, as shown in FIGS. 2 (A) and 2 (B), the travel speed data in the travel history detected by the vehicle sensor 2 and recorded in the travel history DB 13 is transmitted by a transmission section determination unit 14 in advance. It is compared with the determination threshold value Vtraf. If the travel speed data is equal to or less than the transmission section determination threshold Vtraf and the transmission section determination process is not executed at that time, the transmission section determination process is started at a point where the travel speed data is equal to or less than the transmission section determination threshold Vtraf. The point Ta is set, and thereafter, transmission segment determination processing is executed.

  The running speed data in the running history is monitored while the transmission section determination process is being executed, and if the running speed data is equal to or higher than the transmission section determination threshold Vtraf, the end of the transmission section determination process is determined at that time Tb. Migrate to

  When the process proceeds to the end determination of the transmission section determination process, it is then determined whether or not both a predetermined specified travel distance Lend and a predetermined specified travel time Tend have elapsed.

  As indicated by Tc in FIG. 2B, the travel speed data is equal to or less than the transmission section determination threshold Vtraf before one or both of the predetermined travel distance Lend and the predetermined travel time Tend are predetermined. When it becomes, the end determination of the transmission section determination process is ended, and the transmission section determination process is continued as it is.

  As shown in Td of FIGS. 2A and 2B, in a state where the process has shifted to the end determination of the transmission section determination process, both a predetermined specified travel distance Lend and a predetermined specified travel time Tend, or In the case where the traveling speed data is equal to or higher than the transmission section determination threshold Vtraf until one of the two passes, the end determination of the transmission section determination process is ended, and the transmission section determination process is ended, A point where the speed data is equal to or higher than the transmission section determination threshold Vtraf is set as the end point Tb of the transmission section determination process.

  When the transmission section determination process is completed, a determination section length Ljudge from the start point Ta of the transmission section determination process to the end point Tb of the transmission section determination process and a determination travel time Tjudge are calculated. The data is transmitted to the center side via the communication means 4 or the narrow area wireless communication means 5.

  Here, in this Embodiment, it is comprised so that the transmission area determination part 14 can detect the change of a driving direction also during transmission area determination processing. When a change in the travel direction is detected, it is determined that the vehicle equipped with the terminal device 1 has turned right or left at the travel direction change point, and this point is set as a temporary transmission section determination end point. Then, the transmission section determination process is continued as it is, and it is determined that the traveling history during the transmission section determination process includes a right turn or left turn traveling state, and is transmitted together as a part of the traveling history when the traveling history is transmitted.

  Next, how to select the narrow area wireless communication means 3 and the wide area wireless communication means 4 will be described.

  As shown in FIG. 3, during the determination section length Ljudge or the determination travel time Tjudge, the travel speed data includes both a predetermined specified travel distance Lend and a predetermined specified travel time Tend, or one of them. May often be less than or equal to the transmission interval determination threshold Vtraf before elapses. In such a case, it is conceivable that the determination section length Ljudge or the determination travel time Tjudge becomes very long. Therefore, the minimum allowable distance Llow and the minimum allowable time Tlow are set in advance, and the determination section length Ljudge and the determination travel time Tjudge are compared with the minimum allowable distance Llow and the minimum allowable time Tlow, respectively. If either one or both are equal to or greater than the minimum allowable value, it is determined that the condition of the travel history subject to transmission determination is satisfied, and if the condition is not satisfied, the travel history that is not subject to transmission determination judge.

  When the conditions of the travel history subject to transmission determination are satisfied, the travel distance Ll and travel time Tl of the travel section below the transmission determination threshold Ttraf and the travel distance of the travel section above the transmission determination threshold Ttraf regarding the travel history Lh and travel time Th are calculated respectively. Then, the travel distance Ll of the travel section below the transmission determination threshold value Ttraf and the determination section length Liudge, and the ratio of the travel time Tl and the determination travel time Tjudge (Ll / Ljudge, Tl / Tjudge) are respectively calculated. If either ratio is greater than or equal to a predetermined transmission criterion Rjudge, it is determined that the corresponding travel history is transmitted to the center using the wide area wireless communication means 4, and if the condition is not satisfied, It is determined that the corresponding travel history is transmitted to the center side using the narrow area wireless communication means 3. If it is determined to transmit to the center side using the narrow-area wireless communication means, transmission is not possible unless the vehicle is traveling to a place where the roadside machine 5 is located, so that transmission is waited until then.

  Further, as shown in FIG. 4, in order to prevent the determination section length Ljudge or the determination travel time Tjudge from becoming extremely long and the transmission of the travel history from being delayed, a transmission delay allowance process is performed in advance as a transmission delay allowance value. A value Lmax and a transmission delay allowable time value Tmax are set in advance. While the transmission section determination unit 14 continues the transmission section determination process, the continuous travel distance and the continuous travel time of the transmission section determination process are compared with the transmission delay allowable values (Lmax, Tmax), respectively. When both or one of the transmission delay allowable values (Lmax, Tmax) is greater than or equal to the transmission delay determination start point Ta, the traveling from the start point Ta of the transmission section determination process to the point Te where either or one of the transmission delay allowable values is greater than or equal to The history is transmitted from the terminal device 1 to the center side using the narrow area communication means 3 or the wide area wireless communication means 4 by the method described with reference to FIG.

  In this case as well, when transmission is performed using the wide area wireless communication means 4, transmission is possible immediately, but when transmission is performed using the narrow area wireless communication means 3, transmission is not possible unless the roadside device 5 is located. So, until then, it will be in the state of waiting for transmission.

  In this way, when the travel history up to the transmission delay allowable values (Lmax, Tmax) is transmitted using the wide area wireless communication means 4 or waiting for transmission to be transmitted using the narrow area wireless communication means 3 Thereafter, the transmission section determination process is continuously performed by the transmission section determination unit 14 for the subsequent travel history. Then, the end point Tb of the transmission section determination process is determined by the method described with reference to FIG. 2, and the travel history up to the end point Tb is transmitted to the center side as follows.

  That is, in the determination process in FIG. 4, if it is determined that transmission is performed using the wide area wireless communication means 4, the travel distance or travel time from the start point Ta of the transmission section determination process as shown in FIG. When the travel history from the point Te at which either or both of the transmission delay allowable values (Lmax, Tmax) are equal to or greater than the end point Tb of the transmission section determination process is transmitted using the wide area wireless communication unit 4 judge.

  In the determination process in FIG. 4, when it is not determined to transmit using the wide area wireless communication means 4, either the travel distance after the start point Ta of the transmission section determination process, or the travel time, or By using the method described with reference to FIG. 3, the narrow area wireless communication means 3, the wide area communication history, and the travel history from the point Te where both of the transmission delay allowable values (Lmax, Tmax) are equal to or greater than the transmission point determination processing end point Tb It is determined which of the wireless communication means 4 is used for transmission.

  In this case as well, if it is determined that the transmission is performed using the narrow-area wireless communication means, a transmission waiting state is set to a place where the roadside device 5 is located.

  4 and 5, the transmission section determination process is continued by the transmission section determination unit 14 for the travel history from the point Te that has become the transmission delay allowable value (Lmax, Tmax) or more, and the transmission section determination process is continued. When the travel distance and the continuous travel time further exceed the transmission delay allowable values Lmax and Tmax, the corresponding travel history is further transmitted using the wide area wireless communication means 4 by the method described in FIG. Judge whether to do.

  The travel history transmitted by the wide area wireless communication means 4 using the two determination methods in combination is then transmitted by either the narrow area wireless communication means 3 or the wide area wireless communication means 4. In that case, it is possible to use a method such as deleting from the travel history recording unit 13 or adding a tag such as a flag indicating that transmission has been completed so as not to transmit the transmission history that has already been transmitted. desirable.

  Next, the operation of the travel history collection system in one embodiment of the present invention will be described in more detail.

  6 to 9 are flowcharts showing the operation of each part of the travel history collection system according to the embodiment of the present invention.

  As illustrated in FIG. 6, the travel history collection terminal device 1 acquires vehicle information such as the vehicle position, travel speed, and travel direction from the vehicle sensor 2 in the vehicle information collection unit 11 (S601). A travel history is generated from the acquired vehicle information and recorded in the travel history DB 13 via the travel history recording unit 12 (S602). When the travel history is recorded, the transmission section determination unit 14 is notified of the record of the travel history (latest travel history) (S603). When the record of the travel history is notified, based on the travel history recorded in the travel history DB 13, the transmission section determination unit 14 determines the travel history within a certain time or within a certain travel distance from the latest travel history. In step S604, the transmission section is detected based on the section length of the low-speed traveling, the traveling direction, and the like.

  If the transmission section determination unit 14 determines that there is a transmission section (Yes in S604), the travel history corresponding to the transmission section is acquired from the travel history DB 13 (S605), and the travel history corresponding to the transmission section is acquired as the travel history. The data is transferred to the transmission unit 15 (S606). After the transfer is completed, the vehicle information collection unit 11 again acquires the latest vehicle information from the vehicle sensor 2.

  If the transmission section determination unit 14 determines that there is no transmission section (No in S604), the vehicle information collection unit 11 continues to acquire the latest vehicle information from the vehicle sensor 2 as it is.

  When the travel history transmission unit 15 acquires a travel history corresponding to the transmission section (travel history of the traffic jam section) from the transmission section determination unit 14 (S701), first, as shown in FIG. It is determined whether it is in a waiting state (S702), and when it is not in a transmission waiting state (No in S702), a traveling history corresponding to the transmission section is acquired from the traveling history DB 13, and data for narrow-area wireless communication transmission is obtained. It is created (S703), the latest position information is recorded as information one point before, the travel distance L and the travel time T from the transmission section determination point are initialized (S704), and the process shifts to a traffic jam information transmission waiting state (S704). S705).

  If it is determined in the transmission waiting state for traffic jam information (S702) that it is in a transmission waiting state (Yes in S702), the travel history corresponding to the new transmission section is acquired from the travel history DB 13, and the previously created transmission Data is newly added to the data (transmission data created in S703) (S706), and the traffic information waiting state for the roadside device is continued (S707).

  As shown in FIG. 8, when the latest location information is acquired from the vehicle information collection unit 11 in the travel history transmission unit 15 (S801), it is then determined whether or not it is in a traffic jam information transmission waiting state ( S802) If the traffic information is not waiting for transmission of traffic information (No in S802), the travel history transmission unit 15 shifts to a waiting state for narrow area wireless communication (S810), and if it is in a traffic information transmission waiting state (Yes in S802). Compares the latest position information with the position information one point before, and calculates a difference Ldif in travel distance and a difference Tdif in travel time (S803).

  Then, the calculated travel distance difference Ldif and travel time difference Tdif are added to the travel distance L and travel time T from the transmission section determination point, respectively, and the latest position information is recorded and updated as the previous position information ( S804).

  For the travel distance L and travel time T from the updated transmission section determination point, it is determined whether or not they are within the predetermined allowable distance Llim and allowable time Tlim (S805), and the travel distance L and travel time are determined. When both T are within the allowable distance Llim and the allowable time Tlim (Yes in S805), the traveling history transmission unit 15 shifts to a narrow area wireless communication waiting state (S811).

  When either one of the travel distance L and the travel time T exceeds the allowable value (Llim, Tlim) (No in S805), the congestion information transmission waiting state is stopped (S806), which corresponds to the transmission section. Transmission data created from the travel history is transmitted to the travel center via the wide area wireless communication means 4 (S807). Then, after the transmission, the travel history of the transmitted transmission section is deleted from the travel history DB 13 (S808), and the travel history transmission unit 15 is shifted to a narrow area wireless communication waiting state (S809).

  Here, if the allowable values (Llim, Tlim) are negative values, the travel history corresponding to the transmission section determined by the transmission section determination unit 14 is immediately transmitted to the wide area wireless communication means 4 in the travel history transmission unit 15. Can be used to perform transmission processing to the travel history collection center device 7. When the allowable values (Llim, Tlim) are positive values, the travel history corresponding to the transmission section determined by the transmission section determination unit 14 may be temporarily set in a transmission waiting state in the travel history transmission unit 15. it can.

  As shown in FIG. 8, in the narrow area communication waiting state (S810, S811), as shown in FIG. 9, the traveling history collection terminal 15 always uses the traveling history collection terminal device 1 by narrow area wireless communication. A determination is made as to whether or not a point where data communication is possible has been reached (S901). Thereafter, it reaches a point where data communication is possible and determines whether narrow area wireless communication is possible (S902). As a result of the determination, when the narrow area wireless communication is impossible (No in S902), the determination as to whether or not the point where the data communication by the narrow area wireless communication is possible is continued (S901). When it reaches a point where narrow-area wireless communication is possible and narrow-area wireless communication is possible (Yes in S902), it determines traffic information transmission waiting information (S903) and is not in a traffic information transmission waiting state. In (No in S903), all the travel histories stored in the travel history DB 13 are acquired (S905), and in the traffic information transmission waiting state (Yes in S903), the traffic information waiting state is terminated ( After that, all the travel histories accumulated in the travel history DB 13 are acquired (S905).

  Then, transmission data to be transmitted by the narrow area wireless communication means is created from the acquired traveling history (S906), and the created transmission data is sent from the narrow area wireless communication means 3 to the traveling history collection center apparatus 7 via the roadside device 5. Transmit (S907). The transmitted travel history is deleted from the travel history DB 13 as before (S908), and again returns to the state (S901) in which it is determined whether or not it has reached a point where data communication by narrow area wireless communication is possible. Repeat the operation.

  10 and 11 show how the travel history transmitting unit 15 actually selects the narrow area wireless communication means 3 and the wide area wireless communication means 4 in the travel history collection system according to the embodiment of the present invention. It is a figure for demonstrating conceptually.

  As shown in FIG. 10A, when the traveling vehicle M passes through the transmission section (congestion section) P and detects the transmission section (congestion section) at the point Q, as shown in FIG. Then, the travel distance L and the travel time T traveled from the detection point Q of the transmission section P are calculated. When the travel distance L and travel time T are calculated, as shown in FIG. 10B, when the roadside device 5 for narrow area wireless communication and the travel vehicle M have not reached a point where they can communicate with each other. Compares the predetermined allowable travel distance Llim and the allowable travel time Tlim for the travel distance L and the travel time T, respectively. As a result of the comparison, when the travel distance L and the travel time T are within the allowable travel distance Llim and the allowable travel time Tlim, respectively, the transmission by the wide area wireless communication means 4 is continued, and either of the allowable travel distance Llim and the allowable travel time is continued. When the time Tlim is exceeded, the traveling history of the transmission section is transmitted from the traveling vehicle M to the traveling history collection center device 7 using the wide area wireless communication means 4.

  As shown in FIG. 10C, when the travel distance L and travel time T reach the point R that can be transmitted using the narrow area wireless communication means 3 before the allowable travel distance Llim and the allowable travel time Tlim are exceeded. Transmits all the travel histories accumulated in the traveling vehicle M, including the portion corresponding to the transmission section, from the traveling vehicle M to the traveling history collection center device 7 using the narrow area wireless communication means 3. .

  Here, the allowable travel distance Llim and the allowable travel time Tlim are determined by the narrow-range wireless before the transmission section is detected by the terminal device 1 and transmitted to the travel history collection center device 7 using the wide-area wireless communication means 4. This is an allowable value for determining whether transmission using the communication means 3 is possible.

  As described above, according to the present embodiment, when the traveling speed of the transmission section falls below the predetermined transmission section determination threshold value and then travels continuously for a predetermined time or a predetermined distance exceeding the threshold value. If the travel history cannot be transmitted through the narrow-area wireless communication means after traveling for a predetermined time or a predetermined distance after the detection is completed, the wide-area wireless communication means is The transmission section can be detected more accurately than in the past, and the traveling history can be efficiently transmitted through the wide area wireless communication means and the narrow area wireless communication means. The communication frequency can be reduced, and the communication load of the wide area wireless communication network can be reduced.

  Further, according to the present embodiment, the minimum allowable distance Llow and the minimum allowable time Tlow of the determination section lengths Ljudge and Tjudge, and the transmission delay allowable values Lmax and Tmax are set, respectively. The transmission delay time until transmission can be set within a predetermined range, and there is an effect that a large transmission delay does not occur.

  Note that the threshold Vtraf used for determination of the transmission section, the minimum allowable distance Llow, the minimum allowable time Tlow used for comparison of the determination section lengths Ljudge, Tjudge, the allowable transmission delay values Lmax, Tmax, the allowable travel time Tlim, the allowable travel distance Llim, etc. May be arbitrarily set according to the situation, type, etc. of the road on which the vehicle equipped with the terminal device that collects the travel history actually travels. If it does in this way, it will become possible to select a transmission means from a run history more effectively.

  For example, the road types are classified into three types: highways between cities that run at very high speeds, highways in cities and roads dedicated to automobiles, and general roads such as national roads and prefectural roads. As shown in FIG. 11, the threshold value and the like can be set differently. By setting in this way, according to each road, it can be individually set, such as how much the traveling speed decreases and it is said that the traffic is congested, and how much the transmission is performed, so that it becomes more efficient. Further, FIG. 11 is merely an example, and it can be changed depending on road conditions, seasons, regions, and the like.

  The present invention includes a vehicle sensor that detects vehicle travel data, a recording unit that generates and records a vehicle travel history based on the travel data from the vehicle sensor, and a transmission section that determines a transmission section from the recorded travel history. A determination means and a travel history transmission means for transmitting the travel history of the determined transmission section to the center. When the travel speed included in the travel history first falls below a threshold, the transmission section determination means Is the start point of transmission interval determination, and then, when the speed data exceeds the threshold and the state above the threshold continues for a predetermined period of time, the point where the speed data exceeds the threshold ends The transmission section is determined as a point, and when the traveling speed first falls below the threshold, that point is set as the transmission section determination start point, and then the speed data is the threshold. Even if it is above, since it is not determined as the end point of transmission section determination unless the state above the threshold exceeds a predetermined specified period, even if there is a point above the threshold until then, all thresholds including those are included In the following, it will be determined as a traffic jam section such as a so-called traffic jam or accident, and since it is transmitted to the center, the transmission frequency can be reduced, and the traffic jam section can also be judged more efficiently and traveling. It is useful as a history collection system.

The block diagram which shows schematic structure of the transmission log | history collection system in one embodiment of this invention (A) Schematic explaining the determination when there is no section above the threshold in the transmission section in the transmission history collection system in one embodiment of the present invention. (B) There is a section above the threshold in the transmission section in the same system. Schematic diagram explaining the case determination 1st schematic diagram explaining the transmission method of a travel history in the transmission history collection system in one embodiment of this invention 2nd schematic diagram explaining the transmission method of a travel history in the transmission history collection system in one embodiment of this invention 3rd schematic diagram explaining the transmission method of a travel history in the transmission history collection system in one embodiment of this invention The flowchart which shows operation | movement in the case of determining a transmission area and accumulate | storing driving | running history in the transmission log | history collection system in one embodiment of this invention. The flowchart which shows operation | movement in the case of producing transmission data in the transmission log | history collection system in one embodiment of this invention. The flowchart which shows operation | movement in the case of transmitting transmission data using a wide area radio | wireless communication means in the transmission log | history collection system in one embodiment of this invention. The flowchart which shows operation | movement in the case of transmitting transmission data using a narrow area | region wireless communication means in the transmission log | history collection system in one embodiment of this invention. (A) 1st schematic diagram (B) 2nd schematic diagram (C) which shows operation | movement in the case of transmitting transmission data using a wide area radio | wireless communication means in the transmission log | history collection system in one embodiment of this invention Third schematic diagram The figure which shows the specific example of the threshold value used for determination of a transmission area, transmission time, selection of a transmission means, etc. in the transmission history collection system in one embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Terminal device 2 Vehicle sensor 3 Narrow-area wireless communication means 4 Wide-area wireless communication means 5 Roadside apparatus 6 Wide-area wireless communication antenna 7 Travel history collection center apparatus 11 Vehicle information collection section 12 Travel history recording section 13 Travel history DB
DESCRIPTION OF SYMBOLS 14 Transmission area determination part 15 Traveling history transmission part 21 GPS apparatus 22 Angular speed sensor 23 Vehicle speed sensor

Claims (21)

Vehicle detection means for detecting vehicle information including vehicle speed information of the vehicle, recording means for generating and recording a travel history of the vehicle based on the vehicle information from the vehicle detection means, and the travel recorded in the recording means Transmission section determination means for determining the transmission section of the travel history from a history, and travel history transmission means for transmitting the travel history of the determined transmission section to a center means, the transmission section determination means, A point at which the vehicle speed information included in the travel history first falls below a threshold is set as a transmission section determination start point, and the vehicle speed information is equal to or higher than the threshold, and a state above the threshold is determined in advance. A travel history collection system that determines the transmission section when the vehicle speed information is equal to or greater than the threshold when the transmission speed is continued beyond the threshold as an end point of the transmission section determination. The predetermined period is determined by one or both of a predetermined travel distance and a predetermined travel time after the vehicle speed information becomes equal to or greater than the threshold value. The travel history collection system according to claim 1. The travel history collection system according to claim 1, wherein the travel history includes a history representing a traffic jam of the vehicle or a road condition of an accident. The transmission section determination means does not determine the transmission section determination end point when the vehicle speed information does not continue for a predetermined period after the vehicle speed information becomes equal to or greater than the threshold value. The travel history collection system described in any one of them. The travel history transmission means transmits the travel history of the transmission section from the start point to the end point of the determination to the center means when the transmission section determination unit determines the end point of the determination. The travel history collection system according to any one of claims 1 to 4, wherein The travel history transmitting means transmits the travel history of the transmission section to the center means using wide area wireless communication means or narrow area wireless communication means when the transmission section exceeds a predetermined determination section minimum allowable value. 6. The method according to claim 1, further comprising: transmitting to the center means using the narrow area wireless communication means when the predetermined determination section minimum allowable value is not exceeded. The travel history collection system described. The travel history collection system according to claim 6, wherein the determination section minimum allowable value is one or both of a predetermined determination section minimum allowable distance and a predetermined determination section minimum allowable time. The travel history transmission means, when there is a state where the vehicle information does not continue beyond the predetermined period even when the vehicle information becomes equal to or greater than the threshold, Based on the ratio between at least one of the total periods in the state and the transmission section, the transmission history of the transmission section is selected to be transmitted by the wide area wireless communication means or the narrow area wireless communication means The travel history collection system according to claim 1, wherein the travel history collection system according to claim 1 is used. When the ratio between the at least one period and the transmission interval is larger than a predetermined transmission determination reference value, transmission is performed using the wide area wireless communication means, and when the ratio is smaller, transmission is performed using the narrow area wireless communication means. The travel history collection system according to claim 8. Even if the travel history transmission means does not determine the end point of the transmission section, the travel history transmission means transmits the travel history up to that time when a predetermined transmission delay allowable value is reached from the determination start point of the transmission section. The travel history collection system according to any one of claims 1 to 9. The travel history collection system according to claim 10, wherein the transmission delay allowable value is one or both of a predetermined distance and a predetermined time from the determination start point of the transmission section. The travel history transmitting means, when transmitting the travel history, if the section up to the transmission delay allowable value exceeds a predetermined determination section minimum allowable value, the travel history of the section up to the transmission delay allowable value 12. The travel according to claim 10 or 11, wherein the vehicle is transmitted using the wide area wireless communication means, and is transmitted using the narrow area wireless communication means when the predetermined determination section minimum allowable value is not exceeded. History collection system. When the transmission history is transmitted, the travel history transmission means does not continue beyond the predetermined predetermined section even if the speed information up to the transmission delay allowable value is equal to or greater than the threshold. The travel history up to the transmission delay allowable value is calculated based on the ratio of at least one of the total of the non-continuing sections and the total of the other sections to the transmission delay allowable value. The traveling history collection system according to claim 10 or 11, wherein transmission is selected by wireless communication means or transmission by the narrow area wireless communication means. The travel history transmitting means, after reaching the predetermined transmission delay allowable value from the determination start point of the transmission interval, every time the predetermined transmission delay allowable value is reached, The travel history collection system according to any one of claims 10 to 13, wherein the travel history is transmitted respectively. When the travel history transmitting means determines the transmission section determination end point after reaching the predetermined transmission delay allowable value, the travel history transmitting means is configured to determine a section of the section from the point at which the transmission delay allowable value is reached to the transmission section determination end point. The travel history is transmitted by either the wide area wireless communication means or the narrow area wireless communication means in accordance with a transmission situation of the travel history in a section until the transmission delay allowable value is reached. Item 15. The travel history collection system according to any one of Items 10 to 14. The travel section determination means includes detection means for detecting a right / left turn point of the vehicle existing between a determination start point and a determination end point of the travel section, and the recording means is The travel history transmission system according to any one of claims 1 to 15, wherein when a left turn point is detected, a travel history from the right / left turn point to the determination end point is generated. The constant for determining the transmission section determined by the transmission section determination means and the constant for determining the wireless communication means to be selected by the travel history transmission means can be set to different values depending on the type of road on which the vehicle travels. The travel history collection system according to claim 1, wherein the travel history collection system is provided. The constant includes a threshold value for determining the start point and end point of the transmission section determination, the travel section length for the end determination, the travel time, the minimum determination section allowable distance, the determination section minimum allowable time, the transmission determination reference value, and the transmission. 18. The travel history collection system according to claim 17, further comprising at least one of a permissible delay distance, a permissible transmission delay time, a narrow radio communication waiting permissible distance, and a narrow radio communication waiting permissible distance. The travel history transmission unit waits for transmission of the travel history until it can communicate with the center unit when transmitting the travel history using the narrow-area wireless communication unit. The travel history collection system according to any one of claims 6 to 18. When the state of waiting for transmission exceeds either one or both of a predetermined narrow area wireless communication waiting allowable distance and a predetermined narrow area wireless communication waiting allowable time, the wide area wireless communication means is used. The travel history collection system according to claim 19, wherein the travel history is transmitted. Vehicle detection means for detecting vehicle information including vehicle speed information of the vehicle, recording means for generating and recording a travel history of the vehicle based on the vehicle information from the vehicle detection means, and the travel recorded in the recording means Transmission section determination means for determining the transmission section of the travel history from a history, and travel history transmission means for transmitting the travel history of the determined transmission section to a center means, the transmission section determination means, A point at which the vehicle speed information included in the travel history first falls below a threshold is set as a transmission section determination start point, and the vehicle speed information is equal to or higher than the threshold, and a state above the threshold is determined in advance. The vehicle-mounted apparatus characterized by determining the said transmission area by making the point where the said vehicle speed information became more than the said threshold value into the end point of the said transmission area determination when it continues exceeding it.

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