JP2007298341A - On-vehicle device, warning method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology capable of warning, even in the case where a pedestrian does not have a transmission device, when a driver has a dead angle. <P>SOLUTION: When determined that a lane for one's own vehicle is congested, and when a lane adjacent to one's own vehicle is also congested, or otherwise, when another object is not positioned within a prescribed distance in front of each object ahead of one's own vehicle, it is determined that the driver has a dead angle, and information for warning is output. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a technique for warning a dangerous situation.

  As a technique for warning a dangerous situation while driving a vehicle, there are techniques described in Patent Document 1 and Patent Document 2. The technique described in Patent Document 1 determines whether or not a vehicle is currently in a position where an accident is likely to occur based on the location and date and gives a warning when it is determined that the vehicle is currently in a position where an accident is likely to occur. is there. The technique described in Patent Document 2 gives a warning or the like when a pedestrian has a transmission device and receives a signal from the transmission device.

Japanese Patent Laid-Open No. 2001-357496 JP 2005-227989 A

  The technique described in Patent Document 1 may warn even in places with good visibility, for example, there is nothing on both sides in order to determine whether it is dangerous based on the place and date and time. Further, the technique described in Patent Document 2 cannot issue a warning or the like when a pedestrian does not have a transmission device.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a technique capable of giving a warning when a driver has a blind spot. Moreover, this invention aims at enabling it to warn even when a pedestrian does not have a transmission device.

  The present invention has been made to achieve the above object, and is characterized by warning when an adjacent lane is congested. Further, the present invention is characterized in that a warning is given when there is nothing more than a predetermined distance ahead of an object in an adjacent lane.

  Further, the present invention is a vehicle-mounted device that is connected to a traffic information transmitting device that transmits traffic information for each lane via a communication network and determines in which lane the host vehicle is located, the traffic information transmitting Receiving means for receiving traffic information for each lane from the device; own vehicle traffic judgment means for judging whether the lane in which the host vehicle is present is jammed from the received traffic information; and the received traffic information From the adjacent lane congestion determination means for determining whether or not the lane adjacent to the own vehicle is congested, the determination determines that the lane of the own vehicle is congested by the determination, and the adjacent lane of the own vehicle is Output means for outputting warning information when it is determined that the traffic is congested.

  A vehicle-mounted device mounted on a vehicle, the radar measuring the position of each object in the adjacent lane of the vehicle and the size of each object in front of the vehicle, and measured by the radar Determination means for determining whether or not another object is located within a predetermined distance from the front end of the object from each of the position and size of the target object, and within the predetermined distance from the front edge of the object by the determination Output means for outputting warning information when it is determined that no other object is located.

  According to the technology of the present invention, it is possible to issue a warning only when there is a traffic jam in the adjacent lane and when it is considered that the driver has a blind spot. As a result, for example, the occurrence of pedestrians, bicycles, motorcycles, etc. may occur, and only when it is considered difficult for the driver to recognize the presence of those pedestrians, bicycles, motorcycles, etc. Can be performed. Further, even when a pedestrian or the like does not have a transmission device, a warning can be made.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  First, a system configuration example will be described with reference to FIG.

  The system of this embodiment includes a warning device 1, a vehicle 2, a camera 3, a radar 4, a server 5, a communication network 6, a GPS (Global Positioning System) satellite 7, and the like. The warning device 1, the camera 3, the radar 4 and the like are connected to each other by wire or wireless. The warning device 1 is connected to the server 5 via the communication network 6.

  The server 5 is, for example, a server of a company that provides a service that provides traffic jam information. The server 5 transmits the traffic jam information for each lane to the warning device 1 directly via the communication network 6 or via a beacon transmitter (not shown). Here, it is assumed that the server 5 transmits traffic jam information via the communication network 6.

  The communication network 6 is, for example, the Internet, a mobile phone network, a public network, or the like.

  The warning device 1, the camera 3, the radar 4, etc. are provided in the vehicle 2. The camera 3 captures at least the front of the vehicle 2 and inputs the captured image data to the warning device 1. The radar 4 emits a radio wave, and the distance from the reflected wave of the radio wave to each target object such as a vehicle in front of the vehicle 2, the distance to the front end / rear end of the target object, the side of the target object. Get edge position, speed, etc. The camera 3, the radar 4 and the like are the same as those in the prior art.

  The warning device 1 determines whether or not the driver has a blind spot from information input from the camera 3, radar 4, GPS satellite 7, server 5, and the like. No. 3 speed control is performed.

  The number of components shown in FIG. 1 is arbitrary and is not limited to that shown in FIG.

  A configuration example of the warning device 1 will be described with reference to FIG.

  The warning device 1 includes a calculation unit 11, a memory 12, a storage device 13, an input device 14, an output device 15, a communication device 16, a GPS receiving device 17, and the like. The arithmetic unit 11, the memory 12, the storage device 13, the input device 14, the output device 15, the communication device 16, the GPS receiver 17 and the like are connected by a bus 18.

  The storage device 13 is, for example, a storage medium such as a CD (Compact Disc) or a DVD (Digital Versatile Disk), a drive device for the storage medium, an HDD (Hard Disk Drive), or the like. The storage device 13 stores map information 131, a facility point table 132, a near miss point table 133, a jump point table 134, and the like.

  The input device 14 is, for example, a button, a dial, a touch panel, a remote control, a remote control reception unit, or the like. The output device 15 is a display, a speaker, or the like, for example. The communication device 16 is, for example, a mobile phone. The warning device 1 is connected to the communication network 6 via the communication device 16. The GPS receiver 17 receives radio waves from the GPS satellite 7.

  The calculation unit 11 is, for example, an MPU (Micro Processing Unit) or a CPU (Central Processing Unit). The calculation unit 11 executes a program (not shown) to thereby obtain a current position calculation unit 111, a blind spot determination unit 112, a danger possibility determination unit 113, a facility point addition unit 114, a near miss point addition unit 115, and a jump point addition unit 116. The functions of the determination unit 117 and the like are realized. The current position calculation unit 111 calculates the current position of the vehicle 2, the traveling direction of the vehicle 2, and the lane in which the vehicle 2 is located. Here, the operation of calculating the current position by the current position calculation unit 111 is the same as that of the prior art. For example, the current position is calculated by map matching or the like from the signal received by the GPS receiver 17 and the map information 131. Also good. Further, the operation of calculating the traveling direction by the current position calculation unit 111 is the same as that of the conventional technique. For example, the traveling direction of the vehicle 2 is calculated from the current position calculated last time and the current position calculated this time. An example of the operation in which the current position calculation unit 111 calculates the lane in which the vehicle 2 is located is the same as in the prior art. For example, the own lane may be determined based on information transmitted from a beacon transmitter installed for each lane. Alternatively, the own lane may be detected by performing image processing or the like on the image data acquired by the camera 3 to detect a line that divides the lane. The blind spot determination unit 112 determines the presence or absence of the driver's blind spot. An example of this operation will be described later. The danger possibility determination unit 113 determines whether or not a pedestrian or the like has jumped out based on a traffic jam in a lane adjacent to the sidewalk or the presence or absence of a parked vehicle. The facility point addition unit 114 adds points indicating danger according to the conditions in the map information 131 and the facility point table 132. The near-miss point addition unit 115 adds points indicating danger according to the conditions in the near-miss point table 133. The jump point addition unit 116 adds points indicating danger according to the conditions in the jump point table 134. The determination unit 117 outputs information including a warning depending on whether or not the added point is equal to or greater than a predetermined threshold.

  Next, information in the storage device 13 will be described.

  First, the map information 131 will be described.

  In the present embodiment, the position on the map is indicated by latitude and longitude. As described above, the map information 131 includes road information. In the map information 131, the road is indicated by an approximate line segment, and the position of the road is indicated by the latitude and longitude of the end point of the line segment. An example of road information included in the map information 131 is shown in FIG. In FIG. 3, the map information 131 has a plurality of road information tables 301. One road information table 301 includes information about roads indicated by one line segment. Assume that the map information 131 has as many road information tables 301 as the number of roads indicated by one line segment.

  Each road information table 301 includes items 311 and contents 312. Items 311 and contents 312 are associated with each other. The item 311 is an item of road information, and the content 312 is the value of the corresponding item 311. For example, in FIG. 3, an item 311 “road ID” is road identification information. The item 311 “position” is the latitude and longitude of the end point of the road approximated by a line segment.

  In addition to the road information shown as an example in the road information table 301 described above, the map information 131 includes facility information in which a facility is associated with a position where the facility is located. This facility is, for example, a kindergarten, an elementary school, a junior high school, a high school, an event venue, a hospital, a store, a park, a station, a bus stop, a school zone, a learning school, an athletic park, and the like. In addition, the position corresponding to this facility is assumed to be latitude and longitude here.

  Next, the facility point table 132 will be described.

  An example of the facility point table 132 is shown in FIG. In FIG. 4, the facility point table 132 includes a facility 401, a time zone requiring attention 402, a point 403, and the like. The facility 401, the required time zone 402, the point 403, and the like are associated with each other. The facility 401 and the caution time zone 402 are points that are added when there is a facility 401 corresponding to a predetermined range from the current position of the vehicle 2 and the current time is the caution time zone 402 corresponding to the current time. is there. A point 403 is a point to be added when the conditions of the corresponding facility 401 and the caution time zone 402 are satisfied. In the example of FIG. 4, for example, a caution time zone 402 “2 hours before and after the event holding time” corresponding to the facility 401 “event venue” and a caution time zone 402 “bus stop operation” corresponding to the facility 401 “bus stop”. "Time", caution time zone 402 "train operation time" corresponding to facility 401 "station", caution time zone 402 "school commuting time" corresponding to facility 401 "school zone", etc. It is assumed that those time periods requiring attention are transmitted by the server 5 for those for which the time for traffic is not fixed.

  Next, an example of the near miss point table 133 will be described with reference to FIG. Note that, here, one near-miss point table 133 includes information on the occurrence condition of one near-miss. The near-miss here means a dangerous situation in which, for example, the curve cannot be bent completely, an objective accident has occurred, or a personal injury is likely to occur due to a jump or the like. Therefore, it is assumed that the number of near miss points tables 133 stored in the storage device 13 is equal to the number of near misses. Here, it is assumed that the table for storing the information on the occurrence position of the near-miss and the information on the number of occurrences of the near-miss are stored in different tables. Hereinafter, in order to distinguish each table, for example, a description will be given with reference numerals such as “near hat point table 133a”.

  In FIG. 5A, the near-miss point table 133a stores information on the occurrence position of the near-miss. The near-miss point table 133a has a near-miss ID 501 and a position 502. The near-miss ID 501 and the position 502 are associated with each other. The near-miss ID 501 is near-miss identification information. The position 502 includes coordinates 511, road type 512, width 513, number of lanes 514, lane position 515, direction 516, and the like. A coordinate 511 is a position where the corresponding near-miss of the near-miss ID 501 has occurred. The road type 512 is the road type of the road where the corresponding near-miss incident 501 occurred. The width 513 is the road width at the position where the corresponding near-miss of the near-miss ID 501 occurred. The number of lanes 514 is the number of lanes at the position where the near-miss of the corresponding near-miss ID 501 has occurred. The lane position 515 is a lane position at a position where the corresponding near-miss of the near-miss ID 501 has occurred. A direction 516 is a traveling direction when a near-miss of the corresponding near-miss ID 501 occurs.

  In FIG. 5B, the near-miss point table 133b stores information on the number of near-miss incidents. The near-miss point table 133b has a near-miss area ID 521, contents 522, number of cases 523, and the like. The near-miss area ID 521, the content 522, the number of cases 523, and the like are associated with each other. The near-miss area ID 521 is identification information of the near-miss, and is the same as the near-miss area ID 501 described above. The content 522 indicates a situation in which a near-miss of the corresponding near-miss ID 521 has occurred. The number of incidents 523 is the number of incidents that occurred in the corresponding contents 522 in the incident near the corresponding incident ID 521.

  The content 522 includes a time zone 531, brightness 532, weather 533, luminance 534, type 535, and the like. The time zone 531 is a time when a near-miss of the corresponding near-miss ID 521 occurred. The brightness 532 is the brightness at which the corresponding near-miss ID 521 near-miss occurred. The weather 533 is the weather in which the near-miss of the corresponding near-miss ID 521 occurred. The brightness 534 is a contrast ratio between a predetermined standard brightness and a brightness when a near-miss occurs, when the corresponding near-hat ID 521 occurs. The type 535 indicates the type of the incident near the corresponding incident near ID 521.

  In the example of FIG. 5, the near-miss type included in the type 535 shows only the person, but is not limited to this, and may include a car, an objective, and the like.

  Next, an example of the jump point table 134 will be described with reference to FIG.

  In FIG. 6, the jumping point table 134 has a situation 601, a point 602, and the like. The situation 601 and the point 602 are associated with each other. A situation 601 is a situation condition in which popping out may occur. A point 602 is a point to be added when the corresponding situation 601 is satisfied.

  Information such as the map information 131, the facility point table 132, the near miss point table 133, and the jump point table 134 is stored in advance. However, the information is not limited to this, and the input device 14 and the communication device 16 are not limited thereto. New registration, addition, change, deletion, or the like may be performed in accordance with information input via the above. In addition, when the warning device 1 has a function for detecting a near-miss, the information in the pop-up point table 134 stores information about the near-miss detected by the function, and performs new registration, addition, change, deletion, etc. May be.

  Next, a configuration example of the server 5 will be described with reference to FIG.

  In FIG. 7, the server 5 includes a calculation unit 71, a memory 72, a storage device 73, an input device 74, an output device 75, a communication interface 76, and the like. The arithmetic unit 71, the memory 72, the storage device 73, the input device 74, the output device 75, the communication interface 76, and the like are connected to each other via a bus 77.

  The calculation unit 71 is, for example, a CPU. The storage device 73 is, for example, a storage medium such as a CD or a DVD, a drive device for the storage medium, an HDD, or the like. The storage device 73 stores a traffic jam information table 731, a time zone information table 732, a user information table 733, and the like.

  The input device 74 is, for example, a keyboard, a mouse, a microphone, or the like. The output device 75 is, for example, a display, a speaker, a printer, or the like. The server 5 is connected to the communication network 6 via the communication interface 76.

  Here, information in the storage device 73 will be described.

  First, an example of the traffic jam information table 731 will be described.

  The traffic jam information table 731 stores traffic jam position, identification information, speed, and the like as traffic jam information. A traffic jam position, identification information, speed, and the like are associated with each other. The traffic jam position is, for example, the latitude and longitude of the location where the traffic jam occurs. The identification information is identification information of the corresponding lane where the traffic jam occurs. The speed is a speed of a vehicle traveling in a corresponding traffic jam position at a corresponding traffic jam position. The information in the traffic jam information table 731 is traffic jam information for each lane acquired from, for example, a next-generation VICS (Vehicle Information and Communication System) center server. This traffic jam information is, for example, an average speed during traveling in a predetermined section. The traffic information for each lane is acquired by, for example, a roadside device that acquires traffic information provided for each lane, and is acquired by the server 5 via a center server of the next-generation VICS.

  Next, an example of the time zone information table 732 will be described.

  The time zone information table 732 stores a facility, the location of the facility, a time zone, and the like. Facilities, facility positions, time zones, and the like are associated with each other. Facilities are, for example, event venues, bus stops, stations, and the like. The facilities in the time zone information table 732 are, for example, places where the traffic of people changes depending on the season, place, month and day. The facility position is, for example, the latitude and longitude that are the positions of the corresponding facilities. The time zone is a time zone requiring attention, etc. where traffic is intense in the vicinity of the corresponding facility.

  An example of the user information table 733 will be described.

  The user information table 733 includes user names, connection information, and the like. User names, connection information, and the like are associated with each other. The user name is the name of a user who has contracted for information provision from the server 5. The connection information is information for connecting to the corresponding user warning device 1.

  The information in the traffic jam information table 731, the time zone information table 732, and the user information table 733 is assumed to be stored in advance, but newly added according to the information input via the input device 74, the communication interface 76, and the like. May be modified, deleted, etc.

  The calculation unit 71 implements a traffic jam information transmission unit 711, a time zone information transmission unit 712, and the like by executing a program (not shown). The traffic jam information transmission unit 711 transmits the traffic jam position, speed, identification information, and the like read from the traffic jam information table 731 when a request from the warning device 1 is received or every predetermined time. Information transmitted by the server 5 may be transmitted directly through the communication network 6 or the like, or may be transmitted through a beacon transmitter (not shown). It is assumed that traffic jam information is transmitted via The time zone information transmission unit 712 transmits the facility read from the time zone information table 732, the facility position of the facility, the time zone, and the like when a request from the warning device 1 is received or every predetermined time.

  Since the operation example of these servers 5 is the same as that of the prior art, the details are omitted.

  Next, an operation example of the warning device 1 will be described.

  When the warning device 1 is activated, the warning device 1 communicates with the server 5, receives the traffic jam position, speed, identification information, and the like and stores them in the memory 12 or the like. Thereafter, the warning device 1 communicates with the server 5 every time the vehicle 2 travels a predetermined distance, every predetermined time, etc., receives the congestion position, speed, identification information, etc., and stores them in the memory 12 or the like. Here, if the warning device 1 has a navigation system function, for example, the received traffic jam position, speed, identification information, and the like may be used for processing such as route search. Since this operation example is the same as that of the prior art, it is omitted here.

  When the warning device 1 is activated, the warning device 1 communicates with the server 5, receives a combination of a facility, a facility position of the facility, a time zone, and the like, and stores the combination in the facility point table 132 or the like. Specifically, for example, among the combinations of the received facility, the facility position of the facility, and the time zone, the facility, the time zone, and the like are stored in the facility 401 and the caution time zone 402 of the facility point table 132. Here, the time zone information transmission unit 712 of the server 5 may transmit a facility within a predetermined range from the current position of the vehicle 2, a facility position of the facility, a time zone, and the like. In this case, the warning device 1 may transmit the current position of the vehicle 2 calculated by the current position calculation unit 111 to the server 5.

  First, an operation example for determining whether there is a blind spot from the driver will be described. In this operation example, for example, the warning device 1 is activated every predetermined time or every predetermined distance.

  Here, the presence / absence of the blind spot is determined based on the current position, the map information 131, traffic jam information transmitted from the server 5, and the like, and the case where it is determined based on the information acquired by the camera 3 and the radar 4. It shall be. The warning device 1 may perform both of these, or may perform either one.

  First, an example in which the presence / absence of a blind spot is determined from the current position, the map information 131, the congestion position, speed, and identification information transmitted from the server 5 will be described.

  In addition, the operation example which determines the presence or absence of a blind spot from the current position, the map information 131, the traffic congestion position, speed, and identification information transmitted from the server 5 described below is based on the following concept. That is, when a vehicle or the like is traveling or parked in an adjacent lane, it is considered that a blind spot is generated by the vehicle or the like. Here, pedestrians, bicycles, motorcycles, and the like may cross the front and rear of the vehicle when the vehicle is stopped or below a certain speed, and the speed of the vehicle is sufficiently high. In such a case, it is considered that the possibility of crossing the vehicle or the like is low. The operation example described below is a blind spot where a pedestrian, a bicycle, a motorcycle, etc. may occur depending on whether the own lane is congested and the adjacent lane is congested or parked. The presence or absence is determined.

  A specific operation example of the determination will be described with reference to FIG.

  In FIG. 8, the blind spot determination unit 112 first acquires the current position, lane, traveling direction, and the like (S801). Therefore, the blind spot determination unit 112 acquires the current position, lane, traveling direction, and the like calculated by the current position calculation unit 111. Here, the current position calculation unit 111 may calculate the current position, lane, traveling direction, etc. every predetermined time or every predetermined distance and store it in the memory 12 or the like, or from the blind spot determination unit 112 or the like. When a request is received, the current position, lane, traveling direction, etc. may be calculated and stored in the memory 12 or the like. The operation example in which the current position calculation unit 111 calculates the current position, the lane, the traveling direction, and the like is the same as that in the related art as described above.

  Next, the blind spot determination unit 112 determines whether or not the current position of the vehicle 2 is an automobile-only road from the current position acquired in S801 and the map information 131 read from the storage device 13 (S802). Therefore, the blind spot determination unit 112 determines whether or not the latitude and longitude of the current position acquired in S801 are located on the line segment indicated by the content 312 corresponding to the item 311 “position” of each road information table 301. . This determination is made, for example, when the road segment indicated by the content 312 corresponding to the item 311 “position” of each road information table 301 completely matches the latitude and longitude of the current position acquired in S801. It may be determined that the current position is located on the indicated line segment, and the current position acquired in S801 within a predetermined range from the line segment indicated in the content 312 corresponding to the item 311 “position” of each road information table 301 It may be determined that the current position is located on a line segment indicating a road when the latitude and longitude are located. The blind spot determination unit 112 selects the road information table 301 determined to have the current position on the line segment indicating the road by this determination, and the content corresponding to the item 311 “automobile road” of the selected road information table 301 It is determined whether or not 312 is “x”. As a result of this determination, when the content 312 corresponding to the item 311 “automobile road” is “x”, the blind spot determination unit 112 determines that the current position of the vehicle 2 is not the automobile exclusive road.

  If the current position of the vehicle 2 is not an automobile-only road as a result of the determination in S802, the blind spot determination unit 112 determines whether the lane in which the vehicle 2 is currently traveling is not congested (S803). For this determination, the speed of the vehicle 2 may be used, or may be determined based on the vehicle average speed for each lane included in the traffic congestion information for each lane transmitted from the server 5.

  An example in the case of determining from the speed of the vehicle 2 will be described. In this case, the blind spot determination unit 112 calculates the speed of the vehicle 2 and determines whether the calculated speed is equal to or less than a predetermined threshold. For example, the blind spot determination unit 112 acquires acceleration data acquired by an acceleration sensor (not shown), and acquires the current position at that time from the signal received by the GPS receiver 17. The speed of the vehicle 2 is calculated and acquired from the current position calculated this time and the current position calculated last time. Further, the threshold value used in this determination may be a predetermined value, or may be changed according to information input from the input device 14 or the like.

  An example in the case of determining from traffic jam information for each lane will be described. In this case, the blind spot determination unit 112 determines, for example, whether or not the vehicle average speed of the lane in which the vehicle 2 is read out from the memory 12 is equal to or less than a predetermined threshold value. The threshold value used in this determination may be a predetermined value, or may be changed according to information input from the input device 14 or the like.

  As a result of the determination in S803, if the currently running lane is not congested, the blind spot determination unit 112 determines whether the adjacent lane is congested or there is a parking stop in the adjacent lane (S804). As described above, in this embodiment, the server 5 transmits the traffic jam position for each lane. The blind spot determination unit 112 is a combination of information that is identification information of an adjacent lane among the combination of the congestion position, speed, and identification information transmitted from the server 5 and is a congestion position within a predetermined range from the current position. From the information, it is determined whether the adjacent lane is congested or there is a parking stop in the adjacent lane. This traffic jam / parking / stop determination may be made based on, for example, whether or not the average speed as traffic jam information is equal to or less than a predetermined threshold as described above.

  As a result of the determination in S804, if the adjacent lane is congested or there is a parked vehicle in the adjacent lane, the blind spot determination unit 112 determines that there is a blind spot that may be jumped out, and adds a risk point described later. Transition to processing.

  As a result of the determination in S802, when the current position of the vehicle 2 is an automobile-only road, as a result of the determination in S803, when the currently running lane is congested, or as a result of the determination in S804, the adjacent lane is congested. Or when there is no parking stop in an adjacent lane, the blind spot determination part 112 determines that there is no blind spot with a possibility of jumping out, and complete | finishes a process.

  Next, an operation example for determining the presence or absence of a blind spot from information acquired by the camera 3 and the radar 4 will be described.

  First, before describing an operation example, a blind spot determined from information acquired by the camera 3 and the radar 4 will be described with reference to FIG.

  FIG. 9A is an example of a plan view. In FIG. 9A, the vehicle 901 is the vehicle 2. The vehicle 902 is a vehicle in an adjacent lane. In the case of the plan view shown as an example in FIG. 9A, the shaded portion 911 is not reflected on the radar 3 and the camera 4 of the vehicle 901. Therefore, the shaded part 911 is considered to be a blind spot.

  Here, the blind spot area calculated by the apparatus 1 in the case shown in FIG. 9A will be described with reference to FIG.

  For example, a blind spot by the vehicle 921 on a lane adjacent to the lane of the vehicle 901 will be described as an example. A vehicle 922 is located in front of the vehicle 921 with respect to the traveling direction of the vehicle 901. Here, it is assumed that the distance between the vehicle 921 and the vehicle 922 is “l1”. When a vehicle 921 is moving forward, if a pedestrian, a bicycle, a motorcycle, or the like crosses in front of the vehicle 921, the vehicle 921 may cross the front as much as the speed of the vehicle 921 is estimated. Therefore, it is considered that there are no pedestrians, bicycles, motorcycles, or the like within a distance from the front end of the vehicle 921 according to the speed of the vehicle 921. In the example of FIG. 9B, this distance is “12”. A distance “l3”, which is a difference between a distance “l1” between the vehicle 921 and the vehicle 922 and a distance “l2” of a region where a pedestrian, a bicycle, a motorcycle, or the like is considered not to cross, is a pedestrian, a bicycle, a motorcycle, or the like. If there is a sufficient distance for crossing, there is a blind spot that may jump out.

  A specific operation example of the determination will be described with reference to FIG.

  In FIG. 10, the blind spot determination unit 112 acquires the current position of the vehicle 2 (S1001). A specific example of this process is the same as described above, and will not be described. Next, the blind spot determination unit 112 acquires information acquired by the camera 3, the lator 4, etc., and the distance to each object such as a vehicle in front of the vehicle 2, the distance to the front end / rear end of the object. Then, the position, speed, etc. of the lateral end of the object are acquired (S1002). Next, the blind spot determination unit 112 creates a plan view from the image data acquired by the camera 3 (S1003). Specifically, for example, the blind spot determination unit 112 projects a lane or the like included in the image data acquired by photographing by the camera 3 on a plan view. Next, the blind spot determination unit 112 arranges an object that is within a distance of “L” ahead of the position based on the vehicle 2 among the position and size of the object acquired in S1002 in S1003. It arrange | positions in a top view (S1004). Here, the distance “L” is a value calculated by “L = V * s”, for example. This “V” is the speed of the vehicle 2. “S” is, for example, a reaction time from when the driver of the vehicle 2 starts a brake operation until the vehicle 2 stops. The value of “s” may be determined in advance, or may be set according to the input device 14, the communication device 16, the speed of the vehicle 2, traveling conditions such as weather, and the like. The blind spot determination unit 112 adds the distance to each target object, the distance to the front end / rear end of the target object, the target object in front of the vehicle 2 acquired in S1002, and the target object. Image data in which the position of the horizontal end of the image is arranged is created.

  The blind spot determination unit 112 extends each of the front objects arranged in S1004 by a distance “l” in the traveling direction of the vehicle 2 (S1005). For this purpose, for example, the blind spot determination unit 112 sets the value obtained by adding the distance “l” to the front end of each object in the image data acquired in S1004 as the size of the extended object. This distance “l” is a value calculated by “l = v * w”, for example. “V” is the speed of each object, and “w” is the crossing time of a pedestrian, bicycle, motorcycle, or the like. The value of “w” may be determined in advance, or may be changed depending on the input device 14, the communication device 16, the current position of the vehicle 2, and the like. The distance “l” corresponds to “l2” used in the description of FIG.

  The blind spot determination unit 112 determines whether or not the distance between each object stretched in S1005 and another object in front of each object is greater than or equal to a threshold (S1006). Therefore, for example, the blind spot determination unit 112 determines whether or not the distance from the front end of the stretched object acquired in S1005 to the rear end of the object immediately in front of the object is greater than or equal to a threshold value. This threshold is a distance sufficient for a pedestrian, a bicycle, a motorcycle, or the like to cross, for example, 30 cm. This distance corresponds to “l3” used in the description of FIG.

  As a result of the determination in S1006, if the distance is greater than or equal to the threshold value, the blind spot determination unit 112 determines that there is a blind spot that may be popped out, and proceeds to risk point addition processing described later. That is, as a result of the determination in S1006, if the distance is greater than or equal to the threshold value, as described in the above-described example of FIG. 9, “If“ l3 ”is a sufficient distance to cross a pedestrian, bicycle, motorcycle, etc.” It corresponds to.

  If the distance is not greater than or equal to the threshold value as a result of the determination in S1006, the blind spot determination unit 112 determines that there is no blind spot and ends the process.

  Next, an example of the risk point addition process that is started after the process of FIG. 8 or FIG. 10 described above will be described with reference to FIG.

  In FIG. 11, first, the danger possibility determination unit 113 determines whether or not the lane facing the sidewalk is congested (S1101). Therefore, for example, the danger possibility determination unit 113 faces the sidewalk among the combinations of the congestion position, the speed, and the identification information transmitted from the server 5 and the congestion position is within a predetermined range from the current position. A combination that is lane identification information is selected, and it is determined whether or not the speed information of the combination is greater than or equal to a predetermined value.

  As a result of the determination in S1101, when the lane facing the sidewalk is congested, the danger possibility determination unit 113 ends the process.

  Here, it is considered that a pedestrian, a bicycle, a motorcycle, or the like does not cross the front of the vehicle when the speed of the vehicle traveling in the immediate lane to be crossed is high. This determination is for determining such a case, and it is possible to further prevent unnecessary warnings.

  As a result of the determination in S1101, if the lane facing the sidewalk is not congested, the facility point adding unit 114 calculates the danger zone point “P1” (S1102). Therefore, the facility point adding unit 114 refers to the map information 131 and acquires a facility that is within a predetermined range from the current position of the vehicle 2. Next, the facility point adding unit 114 acquires the current time, and selects from the facility point table 132 a facility that has the acquired facility and the acquired current time condition that matches the facility 401 and the attention time zone 402, The points 403 corresponding to the equipment 401 and the caution time zone 402 are read, and these points are added to the variable “P1”.

  The near-miss point adding unit 115 calculates a near-miss point “P2” (S1103). Therefore, the near-miss point addition unit 115 refers to each near-miss point table 133a, includes a position 511 located within a predetermined range from the current position of the vehicle 2, and a lane position 515 that matches the lane position of the vehicle 2 And a near-miss point table 133a that includes a direction 516 that coincides with the traveling direction of the vehicle 2 is selected, and the near-hat area ID 501 is read from the near-miss point table 133a. Next, the near-miss point addition unit 115 selects the near-miss point table 133b having the near-miss district ID 521 that matches the read near-miss district ID 501. Next, the near-miss point adding unit 115 selects a time zone 531, brightness 532, weather 533, brightness 534, etc. of the selected near-miss point table 133 b, and applies the selected time zone. The number 523 corresponding to each of 531, brightness 532, weather 533, luminance 534, etc. is read. The near-miss point addition unit 115 adds the near-miss point to the variable “P2” according to the number 523 of these cases. The addition of near miss points is arbitrary. For example, when the total number of selected time zones 531, brightness 532, weather 533, luminance 534, etc. is equal to or greater than a predetermined value, depending on the constant value or the total number The increasing value may be added as a near miss point. Further, for example, depending on whether or not the number of selected time periods 531, brightness 532, weather 533, brightness 534, etc. is greater than or equal to a threshold value, it may be added as a near miss point.

  Here, the technique for acquiring brightness, weather, luminance, and the like is the same as that of the prior art, and is not particularly limited. For example, it is determined whether the brightness is dark, bright, or slightly dark depending on whether a value acquired by a sensor (not shown) or the like is equal to or greater than a predetermined value. Further, the weather transmitted from the server 5 together with the traffic jam information or the like may be used. As described above, the “brightness” may be a contrast ratio calculated from a value acquired by a sensor (not shown) or the like and a predetermined standard luminance.

  The jump point addition unit 116 calculates the jump point “P3” (S1104). Therefore, the jumping point addition unit 116 determines whether or not the current situation applies to each situation 601 in the jumping point table 134. If the situation is applicable to the situation 601, the jump point addition unit 116 adds the point 602 corresponding to the situation 601. .

  Here, a technique for determining whether or not each situation 601 is applicable is not particularly limited, and may be the same as the conventional technique. Specifically, for example, in order to determine the situation 601 “the width is equal to or less than a predetermined value”, “there is no sidewalk”, “there is no partition between the sidewalk and the roadway”, etc., the blind spot determination unit 112 performs S501 or Judgment whether or not the latitude and longitude and the traveling direction of the current position acquired in S801 are located on or within a predetermined range from the line segment indicated in the content 312 corresponding to the item 311 “position” of each road information table 301 Then, the road information table 301 including the corresponding content 312 is selected. Next, the jump point adding unit 116 selects the item 311 “width”, “presence / absence of an uphill trail”, “presence / absence of a downwalk”, “presence / absence of a partition between an uphill trail and a roadway” of the selected road information table 301, From the content 312 corresponding to “the presence or absence of the partition between the descending sidewalk and the roadway”, “the partition of the median strip”, etc., the situation 601 “the width is less than the predetermined value”, “there is no sidewalk”, “between the sidewalk and the roadway It is determined whether or not there is no partition.

  In addition, in order for the jump point addition unit 116 to determine the situation 601 “the opposite lane is congested or parked and there is no partition in the median strip”, the blind spot determination unit 112 performs the same operation as described above. It is determined from the content 312 corresponding to the item 311 “partition of the median strip” or the like in the selected road information table 301 whether “the median strip has no partition” or the like. Further, the jumping point addition unit 116 determines whether there is traffic congestion in the opposite lane and parking in the same operation example as described above.

  Further, the jump point adding unit 116 may determine whether or not the situation 601 is “backlight”, for example, based on whether or not the sun is reflected in a predetermined area of the camera 3. The determination of whether or not the sun is reflected may be performed by performing image processing on the image data acquired by the camera 3.

  The jump point addition unit 116 may use what is transmitted from the server 5 together with traffic jam information or the like in order to determine whether the situation 601 is “rain or snow” or “heavy rain or heavy snow”.

The jump point addition unit 116 determines whether the value acquired by a sensor (not shown) or the like is equal to or less than a predetermined value in order to determine whether the situation 601 is “brightness equal to or lower than a predetermined value and the light is not lit”. It may be determined based on whether or not the light is turned on / off from a device or the like of the vehicle 2. In addition, the determination unit 117 may determine based on the weather, sunrise, sunset time, current time, and the like transmitted from the server 5 and the like, and the light lighting / non-lighting signal acquired from the device of the vehicle 2 or the like. It is determined whether the total value of “P1” calculated in S1102 above, “P2” calculated in S1103 above, and “P3” calculated in S1104 above is equal to or greater than a predetermined threshold (S1105). . This threshold value may be determined in advance or may be changed according to information input from the input device 14 or the communication device 16.

  If the sum of “P1”, “P2”, and “P3” is not equal to or greater than the predetermined threshold as a result of the determination in S1105, the determination unit 117 outputs warning information (S1106). The warning output here may be an image or a sound. An example of a screen that outputs a warning to the output device 15 such as a display is shown in FIG. In FIG. 12, a screen 1201 is an example in which a warning is displayed on an image of a navigation system, for example.

  In FIG. 11, when the sum of “P1”, “P2”, and “P3” is equal to or greater than a predetermined threshold as a result of the determination in S1105, the determination unit 117 outputs warning information and a speed suppression instruction (S1107). The warning information output here is the same as that in S1106 described above. The speed suppression instruction is information for instructing to suppress the speed of the vehicle 2 and is output from a not-shown output interface or the like to a control device or the like of the vehicle 2 not shown.

  By determining the presence or absence of blind spots based on traffic jams, parking conditions, etc., it is possible to perform warnings or speed control in situations where people may jump out, making it easier to avoid accidents. Become. In addition, the number of warnings can be reduced. Further, even if it is not registered in advance as a danger occurrence area, it is possible to warn if there is a possibility of danger such as popping out.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes design changes and the like within a scope not departing from the gist of the present invention.

  For example, in the above-described processing of S1104, if there is a bus or tram in front of the vehicle 2, and there is a bus stop or tram station within a predetermined range from the current position of the vehicle 2, points may be added. Good. The technique for determining whether there is a bus, a streetcar, or the like in front of the vehicle 2 is arbitrary. For example, the image data acquired by the camera 3 may be determined by screen processing.

It is a figure which shows the system configuration example of one Embodiment of this invention. In the embodiment, it is a figure which shows the structural example of a warning device. In the embodiment, it is a figure which shows an example of map information. In the embodiment, it is a figure which shows an example of a facility point table. In the same embodiment, it is a figure which shows an example of a near miss point table. In the same embodiment, it is a figure which shows an example of a jump point table. In the same embodiment, it is a figure which shows the structural example of a server. FIG. 6 is a diagram for explaining an operation example in the embodiment. FIG. 6 is a diagram for explaining an operation example in the embodiment. FIG. 6 is a diagram for explaining an operation example in the embodiment. FIG. 6 is a diagram for explaining an operation example in the embodiment. In the same embodiment, it is an example of a screen.

Explanation of symbols

  1: warning device, 2: vehicle, 3: camera, 4: radar, 5: server, 6: communication network, 7: GPS satellite, 11: arithmetic unit, 12: memory, 13: storage device, 14: input device, 15: output device, 16: communication device, 17: GPS receiver, 18: bus, 111: current position calculation unit, 112: blind spot determination unit, 113: danger possibility determination unit, 114: facility point addition unit, 115: Near miss point addition unit 116: Jump point addition unit 117: Determination unit 131: Map information 301: Road information table 132: Facility point table 133: Near miss point table 134: Jump point table 51: Arithmetic unit, 52: memory, 53: storage device, 54: input device, 55: output device, 56: communication interface, 57: bus, 511: Traffic jam information transmission unit 512: Time zone information transmission unit 531: Traffic jam information table 532: Time zone information table 533: User information table

Claims (8)

A vehicle-mounted device that is connected to a traffic information transmitting device that transmits traffic information for each lane via a communication network and determines in which lane the host vehicle exists,
Receiving means for receiving traffic information for each lane from the traffic information transmitting device;
From the received traffic information, own vehicle traffic judgment means for judging whether the lane in which the host vehicle is present is jammed,
From the received traffic jam information, an adjacent lane traffic jam judging means for judging whether or not the lane adjacent to the host vehicle is jammed,
Output means for outputting warning information when it is determined by the determination that the lane of the host vehicle is congested and the adjacent lane of the host vehicle is congested. A vehicle-mounted device as a feature. A vehicle-mounted device mounted on a vehicle,
A radar that measures the position of each object in the adjacent lane of the vehicle and the size of each object in front of the vehicle;
A determination means for determining whether or not another object is located within a predetermined distance from the front end of the object, from each of the position and size of the object measured by the radar;
An output device that outputs information for warning when it is determined by the determination that no other object is located within a predetermined distance from the front end of the object. A vehicle-mounted device that is connected to a traffic information transmitting device that transmits vehicle speed information for each lane via a communication network and determines in which lane the host vehicle exists,
Receiving means for receiving vehicle speed information for each lane from the traffic jam information transmitting device;
From the received speed information for each lane, own vehicle traffic judgment means for judging whether or not the vehicle speed of the lane in which the own vehicle exists is a predetermined value or less,
From the received speed information for each lane, adjacent lane congestion determination means for determining whether the vehicle speed of the lane adjacent to the host vehicle is equal to or less than a predetermined value;
Output means for outputting warning information when the vehicle speed of the lane of the host vehicle is equal to or less than a predetermined value and the vehicle speed of the lane adjacent to the host vehicle is equal to or less than the predetermined value. A vehicle-mounted device characterized by the above. A vehicle-mounted device mounted on a vehicle,
A radar that measures the position of the front and rear ends of each object in the adjacent lane of the vehicle in front of the vehicle, and the speed of each object;
For each object in front of the vehicle, the front end of the measured object is stretched according to the measured speed of the object, and within a predetermined distance from the front edge of the stretched object, Determining means for determining whether there is a rear end of another object;
Output means for outputting warning information when it is determined by the determination that there is no rear end of another object within a predetermined distance from the front end of the extended object. . It is a warning method by a vehicle-mounted device that is connected via a communication network with a traffic information transmission device that transmits traffic information for each lane, and determines in which lane the host vehicle exists,
A reception step of receiving traffic information for each lane from the traffic information transmission device;
From the received traffic information, the own vehicle traffic determination step for determining whether the lane where the host vehicle is present is congested,
From the received traffic jam information, an adjacent lane traffic jam judgment step for judging whether or not the lane adjacent to the host vehicle is jammed,
An output step for outputting warning information when it is determined that the lane of the host vehicle is congested and the adjacent lane of the host vehicle is congested. Warning method characterized. A warning method by a vehicle-mounted device mounted on a vehicle,
A vehicle mounting device having a radar that measures the position of each object in the adjacent lane of the vehicle and the size of each object in front of the vehicle,
A determination step of determining whether or not another object is located within a predetermined distance from the front end of the object from each of the position and size of the object measured by the radar;
A warning output step of outputting warning information to the output means when it is determined by the determination that no other target object is located within a predetermined distance from the front end of the target object. Method. A program that is connected to a traffic information transmitting device that transmits traffic information for each lane via a communication network, and that is executed by a vehicle-mounted device that determines in which lane the host vehicle exists,
A reception step of receiving traffic information for each lane from the traffic information transmission device;
From the received traffic information, the own vehicle traffic determination step for determining whether the lane where the host vehicle is present is congested,
From the received traffic jam information, an adjacent lane traffic jam judgment step for judging whether or not the lane adjacent to the host vehicle is jammed,
An output step of outputting warning information when it is determined by the determination that the lane of the host vehicle is congested and the adjacent lane of the host vehicle is congested. A program characterized by A program to be executed by a vehicle-mounted device mounted on a vehicle,
A vehicle-mounted apparatus having a radar that measures the position of each object in the adjacent lane of the vehicle and the size of each object in front of the vehicle,
A determination step of determining whether or not another object is located within a predetermined distance from the front end of the object from each of the position and size of the object measured by the radar;
A warning output step of outputting warning information to the output means when it is determined by the determination that no other target object is located within a predetermined distance from the front end of the target object. program.

Images