JP2005313658A - Vehicle accident prevention system and vehicle accident prevention method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the occurrence of an accident by urging caution to a driver in advance when a vehicle passes through an accident occurrence point even on a road where the vehicle firstly passes. <P>SOLUTION: Accident assessment information is inputted from an accident assessment information input part 321, the status of the accident is analyzed at an accident information analysis part 323 and the analysis result including an advancement direction of the vehicle at the accident is put as a data-base in an accident data base 324. To which accident occurrence point the vehicle is approaching is detected from the present location of the vehicle and the advancement direction and an accident generation history by a similar vehicle having the same advancement direction at the corresponding accident occurrence point is retrieved. When the corresponding accident exists, an alarm for urging caution to the driver is emitted based on it and precautions met to the actual road condition are given to the driver, thereby, occurrence of accident is previously prevented. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle accident prevention system and a vehicle accident prevention method for alerting a driver of a vehicle approaching an accident occurrence point to prevent the occurrence of an accident.

  Conventionally, by providing automobile insurance for automobiles, even if a huge amount of compensation is generated in an automobile accident, the insurance company compensates for this, thereby fulfilling the function of protecting the lives of the parties concerned. In addition to paying such insurance money as a policyholder service, insurance companies also conduct social activities such as traffic safety education to prevent traffic accidents from occurring. This leads to a reduction in risk burden.

  In addition, using vehicle navigation devices that have become very popular in recent years, if the current location of the vehicle is in or near a dangerous area that requires attention when the vehicle is traveling specified in map data, There is one that prevents an accident in advance by issuing a warning based on each data such as a certain time, time, temperature, and weather and alerting the driver (see Patent Document 1).

  In addition, some navigation devices use a navigation device to search for and guide appropriate guidance routes so that it is not necessary to pass through dangerous areas where traffic of vehicles, ships, etc. is dangerous due to weather conditions such as heavy rain, heavy snow, or strong winds. (See Patent Document 2).

  In addition, a password for starting the engine of the car at the time of the insurance contract is generated, and the password is installed in the in-vehicle device after the insurance contract, and the insurance fee per driving is calculated based on the risk factor parameters according to the driving situation of the car. There was something to be determined (see Patent Document 3).

JP 2001-099665 A Japanese Patent Laid-Open No. 10-307042 JP 2002-230303 A

  However, in such background art, for example, when a navigation device is used as in Patent Document 1 or Patent Document 2 described above, the current position of the automobile is in or near a dangerous area that requires attention when the vehicle travels. In addition, it determines the danger level based on each data such as time, time, temperature, weather, etc., issues a warning, and searches the guidance route so that it does not have to go through the dangerous area where traffic is dangerous. There was a thing. In this way, by alerting the driver, accidents can be prevented in advance. The dangerous area in Patent Document 1 is an area where the driving environment of the vehicle deteriorates due to time, time, temperature, weather, etc. That is, it did not issue warnings for general accident-prone areas such as collisions between vehicles. For this reason, even if the vehicle is approaching an intersection where many accidents occur, it must be driven with the same caution as a normal intersection.

  Further, in the above-mentioned Patent Document 3, safety is determined by deciding the insurance premium per driving based on the risk factor parameter according to the driving situation of the automobile, or by making an announcement before passing the accident frequent occurrence point. Aroused driving. However, the motivation that insurance premiums will be cheaper if safe driving standards are observed is effective, but the evaluation criteria are objective and general, and are based on the actual traffic conditions of the actual road. Therefore, it is possible to think that it is safe driving and to reduce the speed, it may interfere with the flow of the car and cause an accident.

  In addition, announcing the fact before passing through the accident-prone point may give vague attention to the driver, but what should be actually driven with care? There was a problem of not knowing.

  This is because accident rates are relatively high at actual road intersections, but the accident details that occur at each intersection differ, and even at the same intersection, the accident details vary depending on the time of day (nighttime / daytime / early morning / evening). Since there may be differences, there was a problem that the driver could not cope properly just by announcing general accident details.

  Also, as the relationship between a vehicle crossing an intersection and a straight-ahead vehicle, even if vehicles passing the same intersection, the points to be careful about driving are completely different if the direction of travel is different. On the contrary, there is a risk that doing so would be harmful.

  Therefore, when there are a plurality of causes of accidents occurring at one intersection, it is also possible to announce (screen display) all of them. However, an announcement is made every time you pass through the accident-prone area, so it is very difficult to hear (see), and if you don't know which of your vehicles corresponds to it, you will almost expect a stimulating effect on safe driving I cannot help saying that I can't.

  In addition, when a non-life insurance company insures an automobile insurance contract, an adjuster who is responsible for assessing the loss is responsible for investigating the cause of the accident and assessing the degree of damage. The scope of the survey extends throughout Japan. For this reason, it is divided into places where accidents are likely to occur, and places where accidents are unlikely to occur. It can be clarified. In this way, non-life insurance companies are in a position to make effective use of vast and detailed accident assessment information.

  The present invention has been made in view of the above, and before the vehicle passes through each accident occurrence point, the driver of the vehicle is urged to warn the driver about the contents to be driven by warning. An object of the present invention is to provide a vehicle accident prevention system and a vehicle accident prevention method capable of preventing the occurrence of an accident because it is possible to drive while being aware of caution points based on the accident history.

  In order to solve the above-mentioned problems and achieve the object, the invention according to claim 1 analyzes the accident situation at each accident occurrence point based on the accident assessment information of the vehicle, and determines the traveling direction of the vehicle at the time of the accident. Accident database means for retrievably storing at least the analysis result including the vehicle, a vehicle position / direction detection means for detecting the current position and the traveling direction of the accident prevention vehicle for preventing the occurrence of the accident, and the vehicle position / direction detection means The vehicle position and traveling direction are compared with accident occurrence point information stored in the accident database means, and the vehicle is approaching any accident occurrence point saved in the accident database means At an accident occurrence point where the passage of the vehicle detected by the approach detection means is predicted, Similar accident situation search means for searching for similar past vehicle accident situations based on the analysis result stored in the source means and at least the traveling direction information of the vehicle by the vehicle position direction detection means, and the similar accident situation And alarm means for alerting the driver based on similar accident situations searched by the search means.

  According to a second aspect of the present invention, in the vehicle accident prevention system according to the first aspect, when the accident database information is updated, the accident database means performs a reanalysis on at least the accident situation at the updated location. The latest analysis result can be always taken out.

  The invention according to claim 3 is the vehicle accident prevention system according to claim 1 or 2, wherein the accident database means further includes the date and time of occurrence of an accident occurring at each accident occurrence point, the cause of occurrence, the occurrence frequency, and One or more analysis results of the vehicle type of the accident vehicle are stored.

  According to a fourth aspect of the present invention, in the vehicle accident prevention system according to the first aspect, the vehicle position / direction detecting means receives radio waves from a plurality of satellites to determine the current position and the traveling direction of the vehicle. It is characterized by detecting.

  According to a fifth aspect of the present invention, in the vehicle accident prevention system according to the first aspect, the vehicle position / direction detecting means searches for a travel route to the destination by setting the destination, and provides route guidance. It is a navigation system for performing.

  According to a sixth aspect of the present invention, in the vehicle accident prevention system according to the fifth aspect, when a navigation system is used as the vehicle position / direction detecting means and a travel route to the destination is searched, the approach detecting means By comparing the travel route and traveling direction of the vehicle with the accident occurrence point information stored in the accident database means, and detecting before the vehicle approaches each accident occurrence point, the similar accident situation search means Past vehicle accident situations similar to each accident occurrence point based on the analysis result stored in the accident database means at each accident occurrence point where the vehicle is expected to pass and the vehicle traveling direction by the vehicle position direction detection And a transfer means for transferring the accident status from the accident database means to the vehicle, Storage means for storing on the vehicle side the vehicle accident situation during the vehicle, and before the vehicle passes through each accident occurrence point during the travel of the predicted travel route, for each accident occurrence point from the storage means The vehicle accident situation is sequentially read out and the driver is alerted by the warning means.

  According to a seventh aspect of the present invention, in the vehicle accident prevention system according to the third aspect, the approach detection means includes an accident occurrence point information stored in the accident database means as an accident occurrence frequency information. It is characterized in that it is detected only when the vehicle approaches the point where it occurs.

  Further, the invention according to claim 8 creates an accident database in which the accident situation at each accident occurrence point is analyzed based on the vehicle accident assessment information, and the analysis result including at least the traveling direction of the vehicle at the time of the accident can be extracted. An accident database creating step, a vehicle position direction detecting step for detecting a current position and a traveling direction of the accident preventing vehicle for preventing the occurrence of an accident, a vehicle position and a traveling direction detected in the vehicle position direction detecting step, An approach detection step for collating with accident occurrence point information stored in the accident database and detecting in advance that the vehicle is approaching any accident occurrence point stored in the accident database; At the accident occurrence point where the vehicle is expected to be detected detected by the approach detection step, the accident database is stored. A similar accident situation search step for searching for similar past vehicle accident situations based on at least the traveling direction information of the vehicle in the vehicle position / direction detection step, and the similar accident situation search step. An alarm step for alerting the driver based on the searched similar accident situation.

  The vehicle accident prevention system according to claim 1 is capable of analyzing the accident situation at each accident occurrence point based on the vehicle accident assessment information and extracting the analysis result including at least the traveling direction of the vehicle at the time of the accident by the accident database means. The vehicle position and traveling direction detected by the vehicle position / direction detecting means by the approach detecting means and the accident position database detected by the vehicle position / direction detecting means for detecting the current position and the traveling direction of the accident-preventing vehicle. The accident occurrence point information stored in the means is collated, and it is detected in advance that the vehicle is approaching any accident occurrence point saved in the accident database means. At the accident occurrence point where the vehicle is expected to pass detected by the approach detection means, the analysis result stored in the accident database means by the similar accident situation search means, and at least the traveling direction information of the vehicle by the vehicle position direction detection means Based on the above, similar past vehicle accident situations are retrieved, and the warning means alerts the driver based on the similar accident situations retrieved by the similar accident situation retrieval means. For this reason, before the vehicle passes through each accident occurrence point, the driver of the vehicle is cautioned to urge the driver to be aware of the points to be driven based on the past accident history even on the first road. This makes it possible to drive while preventing accidents from occurring.

  In the vehicle accident prevention system according to claim 2, when the accident assessment information of the vehicle is updated, the accident database means reanalyzes at least the accident situation of the updated part so that the latest analysis result can be always taken out. The alert content to the person is always based on the new accident assessment information, and it is possible to respond more accurately.

  In the vehicle accident prevention system according to claim 3, the accident database means further includes at least one analysis result among the occurrence date and time, the cause of occurrence, the occurrence frequency, and the vehicle type of the accident vehicle at each accident occurrence point. Since they are stored, more specific warnings can be issued individually using the analysis results, and the occurrence of an accident can be prevented more reliably.

  The vehicle accident prevention system according to claim 4 is configured to receive radio waves from a plurality of satellites such as GPS (Global Positioning System) as vehicle position direction detection means. There is an effect that the traveling direction can be accurately detected.

  The vehicle accident prevention system according to claim 5 employs a navigation system that searches for a travel route to the destination by setting the destination and provides route guidance according to the searched travel route as the vehicle position / direction detection means. In addition, it is possible to determine in advance the vehicle traveling direction and whether to turn right or left, and it is possible to narrow down the details of alarms based on similar causes of accidents and to issue an accurate alarm. .

  A vehicle accident prevention system according to claim 6 uses a navigation system as a vehicle position / direction detection means to search a travel route to a destination, and uses an approach detection means to detect the travel route and traveling direction of the vehicle, and an accident database means. Is detected before the vehicle approaches each accident occurrence point. Based on the analysis result stored in the accident database means at each accident occurrence point where the passage of the vehicle is expected by the similar accident situation search means and the vehicle traveling direction by the vehicle position direction detection, for each accident occurrence point Search for similar past vehicle accident situations, transfer those accident situations from the accident database means to the vehicle by transfer means, save the transferred vehicle accident situation in the traveling route in the storage means on the vehicle side, Before passing through each accident occurrence point while traveling on the predicted travel route, the vehicle accident situation for each accident occurrence point is sequentially read from the storage means, and the warning means is used to alert the driver. For this reason, while the vehicle travels the route to the destination, there is an effect that it is possible to appropriately alert the driver by the warning means without reading out information on each accident occurrence point passing through the accident database.

  The vehicle accident prevention system according to claim 7 is provided only when the approach detection means, as the accident occurrence point information stored in the accident database means, approaches a point where an accident with a certain frequency or more has occurred. Since the detection has been made, it is possible to call attention only when the accident occurrence point that alerts the driver with warning means is not at all accident occurrence points but at a point where the frequency of accident occurrence is high. The effect that an alarm can be issued automatically is produced.

  The vehicle accident prevention method according to claim 8 is capable of analyzing the accident situation at each accident occurrence point based on the vehicle accident assessment information and extracting the analysis result including at least the traveling direction of the vehicle at the time of the accident by the accident database creation step. And detecting the current position and the traveling direction of the accident prevention vehicle that prevents the occurrence of an accident by the vehicle position direction detection step, the vehicle position and the traveling direction detected by the vehicle position direction detection step by the approach detection step, and the accident database The accident occurrence point information stored in the database is collated, and it is detected in advance that the vehicle is approaching any accident occurrence point stored in the accident database. Then, at the accident occurrence point where the vehicle detected by the approach detection step is expected to pass, the analysis result stored in the accident database by the similar accident situation search step and at least the traveling direction information of the vehicle by the vehicle position direction detection step Based on the above, similar past vehicle accident situations are retrieved, and a warning step is urged to alert the driver based on the similar accident situations retrieved in the similar accident situation retrieval step. For this reason, before the vehicle passes through each accident occurrence point, it is possible to prompt the driver of the vehicle to be careful and drive by warning, and the points to be noted based on the past accident history can be obtained even on the first road. It becomes possible to drive while being aware of it, and it is possible to prevent accidents from occurring.

  Embodiments of a vehicle accident prevention system and a vehicle accident prevention method according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

  FIG. 1 is a conceptual diagram illustrating a schematic configuration of a vehicle accident prevention system according to the present invention, and FIG. 2 is a block diagram illustrating a detailed configuration of each unit in FIG. In FIG. 1, for ease of explanation, it is assumed that a plurality of vehicles traveling on public roads all employ the vehicle accident prevention system of the present invention.

  In the vehicle accident prevention system in FIG. 1, as an accident occurrence point, an intersection 10 having a relatively high accident occurrence frequency, or a slope 11 on which a speed is easily generated due to a straight line on a downhill is taken as an example. And the vehicles 12a-12d which come and go on those public roads can determine the present position (latitude / longitude) by receiving the radio wave from the GPS satellite 20.

  Further, the vehicles 12 a to 12 d can access the network 31 by performing mobile communication with the base station 30. Connected to the network 31 is a server 32 that inputs accident assessment information that is inspected and accumulated by the insurance company itself, which is necessary for the vehicle accident prevention system of the present invention, and analyzes the contents to create a database. . In addition, in order to explain the direction of the road in FIG. 1 in an easy-to-understand manner, it is assumed that the road faces E (east), W (west), S (south), and N (north), respectively.

  Further, FIG. 2 shows internal configuration blocks of the vehicle 12 and the server 32 shown in FIG. For example, the vehicle (automobile) 12 includes a GPS antenna 121, a vehicle position / direction detection unit 122 as vehicle position / direction detection means, an antenna 123 for mobile communication, a transmission / reception unit 124, a memory 125 as storage means, an input unit 126, An alarm unit 127 as an alarm unit, a navigation system 128 as a vehicle position / direction detection unit, a control unit 129 having functions as a control of these and an approach detection unit are provided.

  The GPS antenna 121 and the vehicle position / direction detection unit 122 receive radio waves transmitted from at least three GPS satellites 20 and detect the current position information and the traveling direction information when moving by calculating the time difference between them. can do.

  The mobile communication antenna 123 and the transmission / reception unit 124 can always access the server 32 and the like via the network 31 even from the moving vehicle 12 by performing wireless communication via the base station 30.

  The memory 125 may use a disk memory such as a large-capacity HDD (hard disk drive), DVD (digital video disk), and CD (compact disk) in addition to ROM (read only memory) and RAM (random access memory). Is possible.

  The input unit 126 can extract accident information peculiar to the vehicle type by the user making individual settings or inputting the vehicle type information of the own vehicle as will be described later.

  The alarm unit 127 may be anything that can output in the form of an alarm what should be noted to the driver when the vehicle passes through the accident occurrence point. In that case, a speaker or the like can be used. This alarm content is created based on the accident cause extracted as described later, and is converted into voice data or character data. This conversion processing is performed by the control unit 129 here. This conversion process can also be configured so that the alarm contents are patterned in advance and stored in a table, and the corresponding alarm contents are output according to the extracted cause of the accident.

  Although the navigation system 128 is not an essential requirement of the present invention, it is possible to search for a route to the destination only by setting the destination using the navigation system 128, and by using the route information, an accident occurrence point that passes along the way. Since the traveling direction of the vehicle in the vehicle is known in advance, if the information necessary for the alarm is sent collectively from the server and stored in the memory 125, the number of accesses between the servers can be reduced.

  The control unit 129 controls each part of the vehicle 12 and collates the current position and traveling direction information from the vehicle position / direction detection unit 122 with each accident occurrence point information, so that the vehicle 12 can detect any accident. When approaching the point of occurrence, it can be detected in advance. This approach detection can also be performed by the control unit 322 on the server 32 side.

  Subsequently, the server 32 in FIG. 2 includes an accident assessment information input unit 321, an approach detection unit and a similar accident situation search unit, or a control unit 322 as a transfer unit, an accident information analysis unit 323, and an accident database as an accident database unit. 324, a network interface (I / F) 325, and the like.

  The accident assessment information input unit 321 inputs accident assessment information uniquely performed by the insurance company. When a new accident assessment is performed, the accident assessment information is input as new accident assessment information.

  The control unit 322 performs approach detection as described above, searches for a similar past vehicle accident situation from the accident database 324 based on at least the traveling direction information of the vehicle (similar accident situation search), or When the travel route is found by using the navigation system 128, the vehicle accident situation at the accident occurrence point on the way is transferred to the vehicle 12 side.

  The accident information analysis unit 323 is arranged in the control unit 322 here, but may be provided separately from the control unit 322. This analysis of accident information is to divide into necessary information for each analysis item. In this Example 1, the accident assessment information is divided into accident occurrence point, accident occurrence date, accident occurrence status, accident occurrence cause, etc. In addition, by analyzing the accident occurrence state with respect to the traveling direction of the accident vehicle, the vehicle type of the accident vehicle, and the like, it becomes possible to narrow down to more detailed and specific information.

  The accident database 324 stores the analysis results obtained by analyzing the accident assessment information so that they can be taken out. FIG. 3 is a diagram showing an example of this accident database, and FIG. 4 is a diagram showing an example in which the accident occurrence situation of FIG. 3 is analyzed in more detail. For example, as shown in Fig. 3, multiple accidents with different occurrences occur even at the same accident occurrence point, and this difference depends on the direction of travel of the vehicle (direction and straight, right turn, left turn, etc.) (Small, medium, large, passenger cars, commercial vehicles, trucks). In this way, even at the same accident occurrence point, the situation of the accident is different, so if you narrow down the cause of the accident based on the traveling direction and type of vehicle and issue an alarm on it , The alarm with the most appropriate content for the driver can be issued. In FIG. 2, the accident database 324 is arranged in the server 32 of an insurance company or the like, but it is of course possible to provide the memory 125 in the vehicle 12 with the same function as the accident database. In that case, it can be realized by loading an HDD, DVD, CD or the like in which the same data content as the accident database 324 is written. However, when the contents of the accident database are updated, it is necessary to periodically replace the data contents.

  The network I / F 325 serves as an interface when the server 32 is connected to the network 31, and various types of accident information are exchanged between the vehicle 12 and the accident database.

  The vehicle accident prevention system according to the first embodiment is configured as described above, and the operation will be described below with reference to FIGS. 5 and 6. FIG. 5 is a flowchart for explaining the operation until the accident database is created and a warning is issued to the driver before the traveling vehicle passes the accident occurrence point. FIG. This is a subroutine for database creation processing.

  The vehicle accident prevention system according to the present invention is premised on the use of an accident database obtained by analyzing accident assessment information collected by an insurance company for each accident occurrence point. Therefore, in the flowchart of FIG. 5, it is first determined whether or not the accident database has been completed (step S1). If it has not been completed, the process proceeds to step S2 to perform an accident database creation process.

  As shown in FIG. 6, it is necessary to input accident assessment information when creating an accident database. For this reason, it waits in step S21 until the accident assessment information is input, and when the accident assessment information is input, the accident information analysis process is started in step S22. The analysis of the accident information is divided into necessary information for each analysis item, and the necessary information can be taken out at any time by organizing and storing it at each address position in the database (step S23). While the assessment information is being input, the database creation process is continued, and the input of the assessment information is completed (step S24), thereby completing the accident database 324 (step S25).

  Returning to the flowchart of FIG. 5 again, whether or not to use the vehicle accident prevention system of the present invention should be determined by the user, and the process proceeds to step S4 only when the vehicle accident prevention system is used in step S3. To do. In step S4, as shown in FIG. 2, the radio wave from the GPS satellite 20 is received by the GPS antenna 121, and the vehicle position / direction detection unit 122 acquires the current position information and the traveling direction information of the vehicle.

  Subsequently, the control unit 129 collates the current position and traveling direction of the vehicle acquired by the vehicle position / direction detection unit 122 with each accident occurrence point stored in the accident database 324. The current position information and the traveling direction information are transmitted to the base station 30 via the transmission / reception unit 124, sent to the control unit 322 in the server 32 via the network 31, and each accident occurrence stored in the accident database 324 occurs. A point is collated (step S5).

  Then, as a result of the collation, if it is in the state where the accident occurred (here, the circle A surrounded by the one-dot chain line in FIG. 1) or is approaching it (step S6), the accident database 324 at the accident occurrence point is stored. The cause of the accident occurrence of the accident vehicle in the same traveling direction is extracted from the inside (step S7).

  The control unit 322 of the server 32 transmits the cause of the accident relating to the extracted vehicle to the vehicle 12 side via the network 31. Receiving this, the control unit 129 on the vehicle 12 side creates alarm data based on the cause of the accident. Looking at the accident database examples in FIG. 3 and FIG. 4, the vehicle traveling in the same direction as the vehicle traveling north (N) shown by the vehicle 12 b in FIG. 1 travels south and turns right (S → W). A warning is given that a vehicle such as the vehicle 12a should be watched (step S8). For example, it is possible to provide specific and accurate guidance based on past accident information, such as “Be sure to slow down and pay attention to the right turn at the intersection ahead”.

  If the vehicle accident prevention system is not turned off in step S9, the process returns to step S4, and the above-described processing for issuing an alarm in front of the accident occurrence point based on the accident database 324 is continuously performed.

  As described above, according to the first embodiment, when a vehicle passes through the accident occurrence point, it is a road that passes through for the first time by warning the driver of the vehicle to drive carefully. However, since it is possible to drive while being aware of specific points of caution based on past accident histories, accidents can be prevented from occurring.

  In the second embodiment, unless the contents of the created accident database 324 are sequentially updated, an alarm is issued based on old information, and therefore it is necessary to periodically perform update processing. Therefore, in the second embodiment, as shown in FIG. 2, when new accident assessment information performed by an insurance company is input via the accident assessment information input unit 321, the analysis of the new accident assessment information is performed. The accident information analysis unit 323 performs the analysis and the analysis result is newly added to the accident database 324. Here, there is no problem if there is enough capacity in the accident database, but if the capacity is fully used, priorities such as deleting from the oldest accident date and time, or deleting from minor accident information, give priority. In addition, new accident information can always be added.

  Further, the same applies to the case where an HDD, DVD, CD, or the like in which the contents of the vehicle database 324 on the server side are written as the memory 125 on the vehicle 12 side, and the information needs to be updated periodically. In the case of an HDD, it is also possible to have only the data at the update location transmitted via the network and update the contents. If a DVD or CD that cannot be rewritten is used, it should be periodically replaced with a new disk.

  As described above, according to the second embodiment, the contents of the created accident database are always rewritten to the latest, so that an accurate alarm can be issued at the accident occurrence point based on the latest accident information. .

  In the third embodiment, as shown in FIG. 2, a navigation system 128 is mounted on the vehicle 12 side, and a more accurate alarm is issued using the navigation system 128.

  More specifically, the route search function of the navigation system 128 can be used to input a destination and provide route guidance based on the travel route from the searched current location. In this way, once the travel route to the destination is determined, information such as the point and direction of passage in advance and information such as right turn and left turn are also found in advance, so there is no need to access the server 32 each time. If necessary information is acquired from the accident database 324 and stored in the memory 125 or the like on the vehicle 12 side, a series of processing operations can be performed efficiently.

  In addition, since information such as right and left turns can be obtained in advance, it is possible to further narrow down the information to call attention, so that necessary and accurate warnings can be issued to the driver of the vehicle, and accidents can occur in advance. Can be prevented.

  In the fourth embodiment, the accident occurrence date and time in the accident database shown in FIG. 3 can be used to collect similar accident causes at the accident occurrence point and calculate the occurrence frequency of the same kind of accident. In addition to this, when creating an accident database, analysis processing is performed based on accident assessment information. At this time, the frequency of occurrence of similar accidents is allocated as a separate item and stored in the accident database 324. But of course.

  In each of the above-described embodiments, when an accident occurs even once, it becomes an accident occurrence point and becomes a target of a point where an alarm is issued. However, if it is implemented at all points, the vehicle driver becomes troublesome and gets used to the alarm, so the effect of calling attention is considered to be reduced accordingly.

  Therefore, in the fourth embodiment, based on the frequency information obtained as described above, an alarm is not performed at a point where an accident does not occur at a certain frequency or more. As a result, it is more effective to issue warnings at points where driving must be taken care of, to alert the driver, and to stop issuing warnings at accident occurrence points below a certain frequency. An alarm can be issued.

  As described above, the vehicle accident prevention system and the vehicle accident prevention method according to the present invention can analyze the accident situation at each accident occurrence point based on the accident assessment information and extract the analysis result including the traveling direction of the accident vehicle. It is useful for a vehicle accident prevention system and a vehicle accident prevention method for giving a warning to a driver by creating a similar accident database and searching for similar vehicle accident situations based on the traveling direction information of the vehicle from among them, Suitable for vehicle accident prevention system and vehicle accident prevention method to prevent vehicle accidents in advance by using with navigation system etc.

It is a conceptual diagram explaining the schematic structure of the vehicle accident prevention system concerning this invention. It is a block diagram explaining the detailed structure of each part in FIG. It is the figure which showed an example of the accident database. It is the figure which showed the example which analyzed the accident occurrence condition of FIG. 3 in detail. It is a flowchart explaining operation | movement until it produces an accident database and issues a warning with respect to a driver | operator before the vehicle currently drive | working passes an accident occurrence point. It is a subroutine of the accident database creation process in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Crossing 11 Slope 12a-12d Vehicle 20 GPS satellite 30 Base station 31 Network 32 Server 121 GPS antenna 122 Vehicle position direction detection part 123 Antenna 124 Transmission / reception part 125 Memory 126 Input part 127 Alarm part 128 Navigation system 129 Control part

Claims (8)

Accident database means for analyzing the accident situation at each accident occurrence point based on the vehicle accident assessment information and storing the analysis result including at least the traveling direction of the vehicle at the time of the accident so that it can be taken out and stored,
Vehicle position direction detecting means for detecting the current position and the traveling direction of the accident preventing vehicle for preventing the occurrence of an accident;
Any accident occurrence point stored in the accident database means by collating the vehicle position and traveling direction detected by the vehicle position direction detection means with the accident occurrence point information stored in the accident database means Approach detection means for detecting in advance that the vehicle is approaching the vehicle,
Similarity based on the analysis result stored in the accident database means and at least the traveling direction information of the vehicle by the vehicle position / direction detection means at the accident occurrence point detected by the approach detection means where the vehicle is expected to pass Similar accident situation search means for searching past vehicle accident situations,
Alarm means for alerting the driver based on the similar accident situation searched by the similar accident situation search means;
A vehicle accident prevention system comprising:   2. The accident database means according to claim 1, wherein when the accident assessment information of the vehicle is updated, at least the accident situation of the updated part is reanalyzed and the latest analysis result can be always taken out. Vehicle accident prevention system.   The accident database means further stores one or more analysis results of an accident occurrence date and time, an occurrence cause, an occurrence frequency, and a vehicle type of the accident vehicle at each accident occurrence point. Item 3. A vehicle accident prevention system according to Item 1 or 2.   2. The vehicle accident prevention system according to claim 1, wherein the vehicle position / direction detecting means receives radio waves from a plurality of satellites and detects a current position and a traveling direction of the vehicle.   2. The vehicle accident prevention system according to claim 1, wherein the vehicle position / direction detection means is a navigation system that searches for a travel route to a destination by setting a destination and performs route guidance. When a navigation system is used as the vehicle position / direction detection means and a travel route to the destination is searched, the travel detection route information of the vehicle stored in the accident database means is detected by the approach detection means. Are detected before the vehicle approaches each accident occurrence point,
For each accident occurrence point, based on the analysis result stored in the accident database means at each accident occurrence point where the passage of the vehicle is expected by the similar accident situation search means and the vehicle traveling direction by the vehicle position direction detection means Transfer means for retrieving past vehicle accident situations similar to those and transferring those accident situations from the accident database means to the vehicle;
Storage means for storing on the vehicle side the vehicle accident situation in the transferred travel route;
Before the vehicle passes through each accident occurrence point while traveling on the predicted travel route, sequentially reads out the vehicle accident situation for each accident occurrence point from the storage means, and alerts the driver by the warning means. 6. The vehicle accident prevention system according to claim 5, wherein the vehicle accident prevention system is urged.   The approach detection means is configured to detect only when a vehicle approaches a point where an accident with a certain frequency or more has occurred as accident occurrence point information stored in the accident database means. The vehicle accident prevention system according to claim 3. Accident database creation step of analyzing the accident situation at each accident occurrence point based on the vehicle accident assessment information and creating an accident database from which the analysis result including at least the traveling direction of the vehicle at the time of the accident can be taken,
A vehicle position / direction detection step for detecting a current position and a traveling direction of the accident prevention vehicle for preventing the occurrence of an accident;
The vehicle position and the traveling direction detected in the vehicle position / direction detection step are compared with the accident occurrence point information stored in the accident database, and the accident occurrence point stored in the accident database is set to any of the accident occurrence points. An approach detection step for detecting in advance that the vehicle is approaching;
Similar to the analysis result stored in the accident database and at least the traveling direction information of the vehicle in the vehicle position / direction detection step at the accident occurrence point detected by the approach detection step where the vehicle is expected to pass. Similar accident situation search step for searching past vehicle accident situation,
An alarm step for alerting the driver based on the similar accident situation searched in the similar accident situation search step;
A vehicle accident prevention method comprising:

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