JP2005010936A - Traveling support system, onboard terminal and portable terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To avoid wrong announcement of a collision based on a portable terminal which is a lost article, and to perform collision announcement necessary to an occupant, in a traveling support system by information communication between a vehicle and a pedestrian. <P>SOLUTION: In this traveling support system for a vehicle for performing the information communication between an onboard terminal A loaded on the vehicle and a portable terminal B carried by the pedestrian, the onboard terminal A determines a collision probability with the pedestrian carrying the portable terminal B, and announces the result to the occupant when there is the collision probability. In this case, if the portable terminal B is a lost article, the collision announcement is regulated. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle driving support technology using information communication.
[0002]
[Prior art]
In order to improve driving safety of vehicles such as automobiles, a vehicle driving support system using information communication has been proposed. Typically proposed by AHS (Advanced Cruise-Assist Highway System), which provides various traffic information from the roadside communication device to the in-vehicle terminal of the vehicle, or assists automatic driving of the vehicle by the roadside communication device. (Patent Document 1).
[0003]
However, this AHS has a problem that a large-scale infrastructure is required on the road side. In view of this, there has also been proposed a vehicle running support that more easily performs vehicle-to-vehicle communication in which vehicle-to-vehicle information is communicated between vehicles (Patent Document 1). In this inter-vehicle communication, for example, when there is a possibility that a collision may occur between vehicles by exchanging position information between vehicles, it is possible to perform driving support such as notifying an occupant of this.
[0004]
[Patent Document 1] Japanese Patent Application Laid-Open No. 2001-101599
[0005]
[Problems to be solved by the invention]
Here, a system including a portable terminal can be adopted as the driving support system as described above. That is, in order to avoid a collision between a vehicle and a pedestrian, a portable terminal that transmits position information is carried by a pedestrian and information communication is performed not only between the vehicles but also between the vehicle and the pedestrian. A vehicle occupant can be notified of a collision with a pedestrian.
[0006]
However, in-vehicle terminals are permanently installed in the vehicle, whereas in the case of portable terminals, pedestrians may drop them. If such a lost-portable portable terminal is present on the road, there may be a false notification of a collision with a pedestrian that does not actually occur in a vehicle in close proximity to this, and this hinders smooth running of the vehicle. There is a risk of coming.
[0007]
Accordingly, an object of the present invention is to avoid a false notification of a collision based on a portable terminal of a lost article, and to perform a notification of a collision necessary for an occupant.
[0008]
[Means for Solving the Problems]
According to the present invention, a vehicle-mounted terminal device mounted on a vehicle and a portable terminal device carried by a pedestrian, the plurality of vehicle-mounted terminal devices, and the vehicle-mounted terminal device and the portable terminal device are provided. Between the mobile terminal and the portable terminal device, wherein the portable terminal device is detected by a portable position detecting means for detecting a position of the portable terminal device, and the portable position detecting means. Mobile-side communication means for transmitting portable position information indicating the position of the vehicle to the in-vehicle terminal, and the in-vehicle terminal detects vehicle position from the portable terminal. The vehicle and the pedestrian based on vehicle-side communication means for receiving portable position information, the position of the vehicle detected by the vehicle position detection means, and the portable position information received by the vehicle-side communication means. Possible collision with A collision determination unit that determines the nature of the collision, a lost object determination unit that determines whether the portable terminal that has received the portable position information is a portable terminal of a lost item, and a collision result according to a determination result of the collision determination unit. A travel support system characterized in that the notification means regulates the notification when it is determined as a fallen object by the dropped object determination means.
[0009]
According to the driving support system of the present invention, when the notification unit notifies the collision between the vehicle and the pedestrian, the portable terminal of the pedestrian to be notified is determined to be a lost item by the lost item determination unit. In such a case, the notification of the collision is restricted. Accordingly, it is possible to avoid an erroneous notification of a collision based on a portable terminal of a lost article, and to perform a notification of a collision necessary for an occupant.
[0010]
In addition, according to the present invention, an in-vehicle terminal device mounted on a vehicle, a portable terminal device carried by a pedestrian, and a management device that manages information on the in-vehicle terminal device and the portable terminal device are provided. In the vehicle travel support system, the portable terminal device detects the position of the portable terminal device, and the portable position information indicating the position detected by the portable position detection device. Mobile-side communication means for transmitting to the in-vehicle terminal, wherein the in-vehicle terminal receives the mobile position information from the vehicle position detecting means for detecting the position of the vehicle, and the mobile terminal. Based on vehicle-side communication means for transmitting position information to the management device, the position of the vehicle detected by the vehicle position detection means, and the portable position information received by the vehicle-side communication means, A collision determination unit that determines the possibility of a collision with a pedestrian, and a notification unit that reports a collision according to a determination result of the collision determination unit, wherein the management device receives the portable position from the in-vehicle terminal. Management-side communication means for receiving information, and lost article determination means for determining whether or not the portable terminal device that has received the portable position information is a portable terminal of a lost article, and the management device includes the lost article The determination result of the determination means is transmitted to the vehicle-mounted terminal by the management-side communication means, the vehicle-mounted terminal receives the determination result by the vehicle-side communication means, and the notification means receives the determination result received When the vehicle is a lost article, a travel support system is provided that restricts the notification.
[0011]
According to the driving support system of the present invention, it is determined whether or not the portable terminal is a lost object by the lost object determination means of the management device, and the determination result is transmitted to the in-vehicle terminal. And in the said vehicle-mounted terminal device which received this, when performing the alerting | reporting of the collision with a vehicle and a pedestrian by the said alerting | reporting means, based on the said determination result, the said portable terminal device of the said pedestrian who becomes the object of the said alerting | reporting If it is a lost article, the notification of the collision is restricted. Accordingly, it is possible to avoid an erroneous notification of a collision based on a portable terminal of a lost article, and to perform a notification of a collision necessary for an occupant.
[0012]
In addition, according to the present invention, an in-vehicle terminal device mounted on a vehicle, a portable terminal device carried by a pedestrian, and a management device that manages information on the in-vehicle terminal device and the portable terminal device are provided. In the vehicle travel support system, the portable terminal device detects the position of the portable terminal device, and the portable position information indicating the position detected by the portable position detection device. An in-vehicle terminal device and a mobile communication device for transmitting to the management device, wherein the in-vehicle terminal device receives vehicle position information from the mobile terminal device and vehicle position detecting means for detecting the position of the vehicle. The vehicle and the pedestrian may collide with each other based on the vehicle-side communication means, the vehicle position detected by the vehicle position detection means, and the portable position information received by the vehicle-side communication means. Judgment A collision determination unit, and a notification unit that reports a collision according to a determination result of the collision determination unit, wherein the management device receives the portable position information from the portable terminal; And a lost object determination means for determining whether or not the portable terminal that has received the portable position information is a portable terminal of a lost object, and the management device displays the determination result of the lost object determination means as the management side The vehicle-mounted terminal device transmits the determination result to the vehicle-side terminal device, the vehicle-mounted terminal device receives the determination result by the vehicle-side communication device, and the notification device performs the notification when the received determination result is a lost object. There is provided a driving support system characterized in that
[0013]
According to the driving support system of the present invention, it is determined whether or not the portable terminal is a lost object by the lost object determination means of the management device, and the determination result is transmitted to the in-vehicle terminal. And in the said vehicle-mounted terminal device which received this, when performing the alerting | reporting of the collision with a vehicle and a pedestrian by the said alerting | reporting means, based on the said determination result, the said portable terminal device of the said pedestrian who becomes the object of the said alerting | reporting If it is a lost article, the notification of the collision is restricted. Accordingly, it is possible to avoid an erroneous notification of a collision based on a portable terminal of a lost article, and to perform a notification of a collision necessary for an occupant.
[0014]
In the travel support system of the present invention, the management device may further comprise a notification means for notifying a predetermined contact address of a recovery instruction for a lost article when the lost article determination means determines that the lost article is a lost article. By notifying a predetermined contact such as the police of a lost item collection instruction, smooth collection of the lost item is promoted, and the owner of the lost portable terminal and the smooth running of the vehicle can be supported.
[0015]
In the driving support system according to the present invention, the management device may be configured such that when the lost device is determined to be a lost item by the lost item determination unit, the management side When the communication means transmits a transmission stop instruction for the portable position information, and the portable terminal receives the transmission stop instruction by the portable communication means, the portable terminal transmits the portable position information to the in-vehicle terminal. You can also cancel. By stopping the transmission of the portable location information from the portable terminal of the lost article, it will not be received by the in-vehicle terminal and will not be subject to collision determination. Thus, it is possible to avoid an erroneous notification of a collision based on the portable terminal and to notify a collision necessary for an occupant.
[0016]
In addition, according to the present invention, there is a vehicle-mounted terminal device mounted on a vehicle, and the position of the portable terminal device is indicated from detection means for detecting the position of the vehicle and a portable terminal device carried by a pedestrian Based on the communication means for receiving portable position information, the position of the vehicle detected by the detection means, and the portable position information received by the communication means, the possibility of collision between the vehicle and the pedestrian is determined. A collision determination means for determining, a lost object determination means for determining whether or not the portable terminal receiving the portable position information is a portable terminal for a lost object, and reporting a collision according to a determination result of the collision determination means. An in-vehicle terminal characterized in that the informing means regulates the informing when it is determined to be a lost object by the lost article determining means.
[0017]
According to the vehicle-mounted terminal of the present invention, when the notification means notifies the collision between the vehicle and the pedestrian, the portable terminal of the pedestrian to be notified is determined to be a lost object by the lost article determination means. In such a case, the notification of the collision is restricted. Accordingly, it is possible to avoid an erroneous notification of a collision based on a portable terminal of a lost article, and to perform a notification of a collision necessary for an occupant.
[0018]
In the in-vehicle terminal of the present invention, the lost article determination means calculates a change in the position of the portable terminal based on the portable position information received by the communication means, and based on the calculated change in position, It can also be determined whether the portable terminal is a lost portable terminal. If the portable terminal is not allowed to move, it is highly likely that it is a lost object. Therefore, it can be easily determined whether the portable terminal is a lost object based on a change in its position. .
[0019]
In the in-vehicle terminal of the present invention, the communication unit receives vehicle position information indicating the position of the other vehicle from another vehicle, and the lost article determination unit receives the vehicle position received by the communication unit. Based on the information and the portable position information, it is determined whether the other vehicle has passed the position of the portable terminal, and the other vehicle has passed the position of the portable terminal. It can also be determined that the portable terminal is a lost item. If there is another vehicle passing over the portable terminal, it is highly likely that it is a lost item, so it is easy to determine whether the portable terminal is a lost item based on the presence or absence of the passage. can do.
[0020]
In this case, the lost article determining means can determine that the portable terminal is a lost article when it is determined that a plurality of the other vehicles have passed the position of the portable terminal. If there is a plurality of other vehicles passing over the portable terminal, it is more likely that it is a lost item. Therefore, whether or not the portable terminal is a lost item based on whether or not a plurality of vehicles have passed. It can be determined easily and more reliably. According to the present invention, there is provided a portable terminal carried by a pedestrian, the detecting means for detecting the position of the portable terminal, and the position of the portable terminal detected by the detecting means. The change of the position of the portable terminal is calculated based on the communication means for transmitting the indicated position information to the in-vehicle terminal mounted on the vehicle and the position of the portable terminal detected by the detection means. And a communication unit, wherein the communication unit stops transmission of the position information based on the change in the position calculated by the calculation unit.
[0021]
According to the portable terminal of the present invention, the change of the position is calculated by the calculating means, and based on this, the transmission of the position information is stopped. For this reason, for example, when the portable terminal is a lost article, the transmission of the position information is stopped and is not received by the in-vehicle terminal. Therefore, in the in-vehicle terminal, for example, since it is no longer subject to collision determination, it is possible to easily and reliably avoid a false notification of a collision based on a portable terminal of a fallen object, and a collision required for an occupant. Can be notified.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of the present invention will be described below with reference to the drawings.
[0023]
<First Embodiment>
FIG. 1 is a schematic diagram of a driving support system according to an embodiment of the present invention. In this driving support system, a vehicle-mounted terminal A is mounted on each of a plurality of vehicles, and a portable terminal B is carried by a pedestrian. In FIG. 1, only two vehicles are illustrated and only one pedestrian is illustrated. And while performing in-vehicle communication between each in-vehicle terminal device A by vehicle-to-vehicle communication, wireless information communication is also performed between each in-vehicle terminal device A and each portable terminal device B, thereby assisting in running the vehicle. To do.
[0024]
As the communication method, for example, a broadcast method can be adopted. As the communication range, in the case of the in-vehicle terminal A, the range of about 200 m forward and left and right in the traveling direction, and about 50 m rearward, the portable terminal B In the case, the range of about 150 m can be mentioned in front, rear, left and right. As the number of communication targets, about 200 vehicles and about 25 pedestrians are assumed.
[0025]
In this driving support system, information on the vehicle or pedestrian is periodically transmitted from each terminal A and B, and necessary information is selected in the in-vehicle terminal A on the receiving side to alert the driver of an accident. It can be provided. As a period of information transmission, for example, in the case of the in-vehicle terminal A, a variable period of about 0.1 seconds to 1 second depending on the vehicle speed, and in the case of the portable terminal B, according to the walking speed. A variable period of about 0.5 seconds to 1 second can be given.
[0026]
The transmitted information includes an identifier for identifying itself, in addition to position information indicating the current position of the vehicle or pedestrian. In the case of the in-vehicle terminal A, various vehicle information, for example, vehicle speed, traveling direction, yaw rate, acceleration, etc., and various operation information, for example, steering angle (handle operation amount), throttle opening (accelerator operation amount). Brake pressure, turn signal operation, door opening / closing, etc.
[0027]
In such a driving support system, for example, the collision prevention between straight vehicles at the intersection, the front collision between the oncoming vehicles, the collision between the right turn car and the vehicle at the intersection, or the collision between the vehicle and the pedestrian, Driving support can be performed.
[0028]
Next, the configuration of the in-vehicle terminal A will be described. FIG. 2A is a block diagram illustrating a configuration example of the in-vehicle terminal A. The CPU 101 is a processor that controls the entire in-vehicle terminal A, and particularly performs processing to be described later. A ROM (read only memory) 102 is a memory for storing fixed data in addition to programs for each processing described later. A RAM (Random Access Memory) 103 has a work area for programs processed by the CPU 101, and stores variable data and the like. Needless to say, other storage means may be employed as the ROM 102 and the RAM 103.
[0029]
The map information DB (database) 104 is a database including road information and the like, and the same level as that used in the car navigation system can be adopted. The map information DB 104 is constructed using storage means such as a hard disk, CDROM, or DVD.
[0030]
The display 106 is a display that displays various types of information. The display 106 is connected to the CPU 101 via the display controller 105 and displays various types of information according to instructions from the CPU 101. The audio output circuit 107 provides various kinds of information to the vehicle occupant through the speaker 108 by means of voice such as synthesized voice. In the present embodiment, as will be described later, the voice is notified of a collision with another vehicle. Used for.
[0031]
The clock IC 109 is a circuit that measures the date and the current time. A GPS (global positioning system) sensor 111 is a position detection sensor that receives a radio wave transmitted from an artificial satellite and detects the current position of the host vehicle, and provides the current position to the CPU 101 via the interface 110. The vehicle speed sensor 112 is a speed detection sensor that detects the traveling speed of the host vehicle, and provides the traveling speed of the host vehicle to the CPU 101 via the interface 110. In this embodiment, a GPS sensor and a vehicle speed sensor are cited as sensors for detecting the state of the vehicle. However, it is possible to provide various sensors for acquiring other vehicle information and operation information. Needless to say. The communication device 113 is a device that performs wireless bidirectional communication with the in-vehicle terminal A and the portable terminal B of another vehicle.
[0032]
Next, the configuration of the portable terminal device B will be described. FIG. 2B is a block diagram illustrating a configuration example of the portable terminal device B. The CPU 201 is a processor that controls the entire portable terminal device B. A ROM (Read Only Memory) 202 is a memory for storing fixed data in addition to a program for each process. A RAM (Random Access Memory) 203 has a work area for programs processed by the CPU 201 and stores variable data and the like. Needless to say, other storage means may be employed as the ROM 202 and the RAM 203.
[0033]
The GPS sensor 205 is a position detection sensor that detects the current position of a pedestrian by receiving radio waves transmitted from an artificial satellite, and provides the current position to the CPU 201 via the interface 204. The communication device 206 is a device that performs wireless bidirectional communication with the in-vehicle terminal A. However, in this embodiment, the communication device 206 only periodically transmits information on the current position detected by the GPS sensor 205 to the in-vehicle terminal A, and the reception function is not used. The clock IC 207 is a circuit that measures the date and the current time.
[0034]
In this embodiment, only the GPS sensor is cited as a sensor for detecting the state of the pedestrian, but various sensors such as a sensor for detecting the walking speed of the pedestrian and a sensor for detecting the direction of the route are used. It goes without saying that it can be equipped with a kind. Moreover, as this portable terminal device B, for example, a portable phone having the above-described functions can be adopted. In this case, the GPS sensor 205 can be omitted by using the position detection function in the mobile phone.
[0035]
Next, processing of the CPU 101 of the in-vehicle terminal A will be described. FIG. 3A is a flowchart showing an example of information communication processing in the present embodiment. In this example, information communication between the in-vehicle terminal A and the portable terminal B will be mainly described. In S1, the current position information and the vehicle traveling speed information are acquired from the GPS sensor 111 and the vehicle speed sensor 112. In S2, based on the information acquired in S1, the information on the host vehicle is transmitted from the communication device 113 to the in-vehicle terminal A of another vehicle. FIG. 4A is a diagram illustrating an example of information to be transmitted.
[0036]
In FIG. 4A, “terminal ID” is an identifier assigned to the in-vehicle terminal A. “Terminal type” is information indicating whether the terminal is an in-vehicle terminal or a portable terminal, and is used to distinguish a vehicle from a pedestrian. “Own vehicle information” is information indicating the state of the own vehicle that is the transmission source, and includes “current position” indicating the position information (latitude and longitude) of the own vehicle measured by the GPS sensor 111 and the vehicle speed sensor 112. The “traveling speed” indicating the traveling speed of the host vehicle detected in (1) is included. This transmission information is transmitted in the same format (excluding “traveling speed”) from the communication device 206 of the portable terminal B to the in-vehicle terminal A.
[0037]
Returning to FIG. 3, in S <b> 3, the communication device 113 performs processing for receiving information from the in-vehicle terminal A and the portable terminal B of the other vehicle. In S4, if information is received from the in-vehicle terminal A or portable terminal B of the other vehicle in S3, the process proceeds to S5, and if nothing is received, the process returns to S1 and the same process is repeated. In S5, the table which accumulate | stored the information of another vehicle and the information of a pedestrian (other moving body information) is updated with the received information. FIG. 4B is a diagram showing an example of a table of other mobile information, and particularly shows an example of information of the portable terminal B. The other mobile body information is recorded by the CPU 101 and stored in the RAM 103. In the present embodiment, the mobile body information is created for each terminal.
[0038]
In FIG. 4B, “terminal type” is information for distinguishing between the in-vehicle terminal A and the portable terminal B, and the case of the portable terminal B is illustrated in the example of the figure. The “terminal ID” is an identifier of the in-vehicle terminal A or the portable terminal B of another vehicle that has received the information. “Time” indicates the time when information is received, and is measured by the clock IC 109. Although the reception time is used in this embodiment, the transmission time may be set by including time information in the transmission information. “Position” is position information (corresponding to “current position” in FIG. 4A) transmitted from the in-vehicle terminal A or the portable terminal B of the other vehicle. Only minutes are recorded. By referring to this position information, the movement history of each other moving body can be known. Although the above is an example of other mobile body information, the information recorded can be variously employ | adopted besides this, for example, in the case of the vehicle-mounted terminal device A, the information of travel speed can also be included.
[0039]
In S5, if the in-vehicle terminal A or portable terminal B that is the transmission source of the information received in S4 is already recorded in the table of FIG. 4B, this is updated, and is not recorded Adds this anew. In addition, information on other mobile units that have not received information for a certain period of time is deleted.
[0040]
Returning to FIG. 3, in S6, the possibility of collision between the host vehicle and the pedestrian is determined. Here, there is a possibility of collision based on at least the position information of the own vehicle acquired by the GPS sensor 111 in S1 and the position information (latest position) of the pedestrian in the other moving body information shown in FIG. Determine. In this determination, it is possible to more accurately determine the possibility of collision by using the traveling speed of the host vehicle, the traveling direction, and information on the traveling path on which the host vehicle is traveling based on the map information DB 104 and the like. If it is determined that there is a possibility of a collision, the process proceeds to S8 in S7, and if not, the process returns to S1 and the same process is repeated.
[0041]
In the present embodiment, a unit processing loop is configured by S1 to S8 in the processing flow of FIG. 3A. For example, the processing of S1, the processing of S2, and the processing of S3 to S8 are respectively performed. The acquisition result may be saved in the process of S1, the acquisition result may be transmitted by periodically performing the process of S2, and S3 to S8 may be interrupted.
[0042]
Next, the notification process in S8 will be described. FIG. 3B is a flowchart illustrating an example of notification processing. In this embodiment, when it is determined in S7 that there is a possibility of collision with another vehicle, this is notified to the passenger of the own vehicle. However, unlike the in-vehicle terminal A, in the case of the portable terminal B, a pedestrian may drop it. When the possibility of a collision is determined based on the positional information transmitted from the portable terminal B of the lost article, a false notification of a collision with a pedestrian that does not actually occur may be made. There is a risk of hindering smooth running. Therefore, in the present embodiment, when the portable terminal B of the pedestrian whose a collision possibility is affirmed is a fallen object, the notification of the collision is restricted.
[0043]
In FIG. 3B, it is determined whether or not the portable terminal B whose collision possibility is affirmed in S11 is a fallen object. Details of the processing will be described later. In S12, the process proceeds to S14 if it is determined as a lost item based on the determination result in S11, and otherwise proceeds to S13.
[0044]
In S13, the passenger is notified of the collision in a normal manner. Here, the CPU 101 instructs the sound output circuit 107 to output sound, and the sound output circuit 107 that has received the instruction outputs from the speaker 108 that there is a possibility of collision. On the other hand, in S14, notification to passengers is restricted. In this embodiment, no notification is performed. Thereby, the false notification of the collision based on the portable terminal of the lost article can be avoided, and the notification of the collision necessary for the occupant can be performed. However, in this regulation notification, notification that does not draw considerable attention from the passenger may be performed. For example, in the normal notification in S13, the notification is made by voice, but in the restriction notification in S14, the collision may be notified to the display 106 only by displaying characters and figures. Moreover, it is good also as the alert | report which added that there was a possibility of a misreport. Furthermore, the passenger may be allowed to set several regulation notification modes.
[0045]
6A and 6B are diagrams showing examples of normal notification and restriction notification. In FIG. 6A, there is a pedestrian carrying the portable terminal B in front of the host vehicle, and a normal notification such as “There is a pedestrian in the front. Has been done. On the other hand, in FIG.6 (b), the portable terminal B of the fallen thing exists ahead of the own vehicle, and a pedestrian does not exist. For this reason, nothing is reported in the host vehicle.
[0046]
Next, an example of lost article determination processing will be described. FIGS. 5A and 5B are flowcharts showing examples of lost object determination processing. Various determination methods can be considered for determining whether or not the portable terminal B is a lost object. In this embodiment, the determination is based on a change in the position of the portable terminal B (FIG. 5A), and others. And a case where the determination is made based on whether or not the vehicle is passing through the portable terminal B (FIG. 5B).
[0047]
In FIG. 5A, in S21, the position history of the portable terminal B is searched, and the change in the position is calculated. Specifically, the position at each time is read from the mobile body information (FIG. 4b) of the target portable terminal B, and the change in position within a certain time is calculated. In calculating the change in position, it is desirable to calculate by subtracting the positioning error by the GPS sensor 205. If the amount of change in position exceeds a predetermined threshold, it is determined that there is a movement, and if not, it is determined that there is no movement.
[0048]
In S22, according to the processing result in S21, if it is determined that there is a movement within a certain time, the process proceeds to S24 and is set as not a drop-off item. Conversely, if it is determined that there is no movement within a predetermined time, the process proceeds to S23 and is set as a fallen object. The process ends as described above.
[0049]
As described above, in this example, when the portable terminal B is not allowed to move, it is highly likely that the portable terminal B is a lost article. Therefore, whether or not the portable terminal B is a lost article is determined based on the change in the position. It can be easily determined.
[0050]
Next, the example of FIG. 5B will be described. In S31, the movement history of the other vehicle is searched, and it is determined whether or not the other vehicle has passed the position of the target portable terminal device B (hereinafter referred to as a lost article position). Specifically, the position information is read from the moving body information (FIG. 4b) of the other vehicle, and the vehicle passing through the dropped object position during the time when the portable terminal B is present at the dropped object position is specified. .
[0051]
In S32, it is determined based on the result of S31 whether or not a plurality of other vehicles have passed the dropped object position. If a plurality of vehicles pass, the process proceeds to S33 and is set as a fallen object. If not, the process proceeds to S34 and is set not to be dropped.
[0052]
As described above, in this example, when another vehicle passes through the portable terminal B, the possibility of being a lost article is extremely high. Therefore, the portable terminal B is lost due to the presence or absence of the passage. It can be easily determined whether or not. In addition, although it may be determined that a single vehicle has passed the dropped object position and is a lost object, in this example, a condition is that a plurality of vehicles have passed (S32). Since there is a higher possibility of a lost item when a plurality of other vehicles are passing, it is easy to determine whether or not the portable terminal B is a lost item based on whether or not a plurality of vehicles have passed. It can be determined with higher reliability.
[0053]
FIGS. 7A and 7B are explanatory diagrams of the lost object determination process of FIG. In FIG. 6A, there is a pedestrian carrying the portable terminal B in front of the host vehicle, and a normal notification such as “There is a pedestrian in the front. Has been done. On the other hand, in FIG.6 (b), the portable terminal B of the fallen thing exists ahead of the own vehicle, and a pedestrian does not exist. For this reason, nothing is reported in the host vehicle.
[0054]
Second Embodiment
In the first embodiment described above, it is determined whether or not the portable terminal B is a fallen object in the in-vehicle terminal A, but in the present embodiment, this is determined by a separate management device. FIG. 8 is a schematic diagram of a driving support system according to the second embodiment of the present invention. Hereinafter, a description will be given focusing on differences from the first embodiment described above.
[0055]
Also in this driving support system, the in-vehicle terminal A is mounted on each of the plurality of vehicles, and the portable terminal B is carried by a pedestrian. Furthermore, the management apparatus C which can communicate information with the vehicle-mounted terminal A and the portable terminal B is provided. In FIG. 8, only one vehicle and one pedestrian are shown, but in reality, a larger number of both are assumed. And between each vehicle-mounted terminal A, between each vehicle-mounted terminal A and each portable terminal B, and between each vehicle-mounted terminal A, each portable terminal B, and the management apparatus C, it is wireless information. The vehicle is supported by communication.
[0056]
Next, the configuration of the management apparatus C will be described. FIG. 9A is a block diagram illustrating a configuration example of the management apparatus C.
[0057]
The CPU 301 is a processor that controls the entire management apparatus C, and particularly performs processing to be described later. A ROM (Read Only Memory) 302 is a memory for storing fixed data in addition to programs for each processing described later. A RAM (Random Access Memory) 303 has a work area for programs processed by the CPU 301 and stores variable data and the like. Needless to say, other storage means may be employed as the ROM 302 and the RAM 303.
[0058]
The mobile body information DB (database) 304 is a database in which the same kind of information as the other mobile body information described with reference to FIG. 4B is accumulated, and vehicles and pedestrians (the in-vehicle terminal device A and the portable terminal device). B) Various information is accumulated. 4 (b) is different from the other moving body information, the information of FIG. 4 (b) does not include the information of the own vehicle, but this moving body information DB 304 includes information on all vehicles and pedestrians. Become. In the present embodiment, since the management apparatus C includes the mobile body information DB 304 as described above, it is not necessary to record information for each time as shown in FIG. Only the latest information needs to be recorded.
[0059]
The lost item information DB (database) 305 is a database in which a list of portable terminals B determined to be lost items in the management apparatus C is accumulated. FIG. 9B is a diagram showing an example of a lost item list. As shown in the figure, this list includes a “terminal ID” that identifies the portable terminal B that has been determined to be a lost item, and “position” information (longitude, latitude) that indicates the lost item position. Note that the moving object information DB 304 and the lost article information DB 305 are constructed using one or a plurality of storage means such as a RAM and a hard disk.
[0060]
Next, the management apparatus C includes two types of communication means. The communication device 306 is a device that performs wireless bidirectional communication with the in-vehicle terminal A and the portable terminal B. The communication device 307 is a communication means for the Internet (E-mail) or FAX, and the portable terminal B determined by the management device C as a lost item is sent to a predetermined contact address (for example, a police station having jurisdiction over the lost item position). Thus, the communication device is used to notify an instruction to collect lost items by e-mail or FAX. The clock IC 308 is a circuit that measures the date and the current time.
[0061]
Next, processing of the CPU 301 of the management apparatus C will be described. FIG. 10 is a flowchart illustrating an example of information communication processing by the management apparatus C. In S41, processing for receiving information from the in-vehicle terminal A and the portable terminal B is performed. In the case of this embodiment, it is possible to transmit the same information as the transmission information shown in FIG. 4A from the in-vehicle terminal device A and the portable terminal device B, respectively, and individually receive them. It is also possible to indirectly receive the information of the portable terminal device B from the in-vehicle terminal device A.
[0062]
FIG.9 (c) is a figure which shows the example of the transmission information transmitted from the vehicle-mounted terminal device A in this case. In the case of the example of FIG. 9C, other mobile body information is recorded in addition to the own vehicle information, and the transmission information received by the in-vehicle terminal A from the portable terminal B is transcribed therein. . Thus, the information regarding the portable terminal B can be obtained from the in-vehicle terminal A by including the other mobile information in the transmission information from the in-vehicle terminal A. In this case, the management device C may cancel the transmission information from the portable terminal device B and adopt only the information of the portable terminal device B included in the transmission information from the in-vehicle terminal device A, or use both together May be. Further, in FIG. 9C, only the information on the portable terminal B is shown as the other mobile body information, but the transmission information from the in-vehicle terminal A of the other vehicle received by the in-vehicle terminal A is included. May be.
[0063]
Next, returning to FIG. 10, in S42, if information is received from the in-vehicle terminal A or the portable terminal B in S41, the process proceeds to S43. If nothing is received, the process returns to S41 and the same processing is performed. repeat. In S43, the mobile information table stored in the mobile information DB 304 is updated with the received information. Specifically, if the in-vehicle terminal A or the portable terminal B related to the information received in S41 is already recorded in the mobile information DB 304, this is updated, and if it is not recorded, this is newly updated. to add. Note that information on a moving body that has not received information for a certain period of time may be deleted.
[0064]
In S44, the process which determines whether it is a fallen thing about each portable terminal B currently recorded on mobile body information DB304 is performed. About the determination method of whether it is a lost article, as above-mentioned, when determining based on the change of the position of the portable terminal B (FIG. 5 (a)), other vehicles pass the portable terminal B. A case where the determination is made based on whether or not there is (FIG. 5B) can be cited, and can be performed in the management apparatus C based on information stored in the mobile object information DB 304. In the table update process of S43, only the information related to the in-vehicle terminal A may be updated, and if the information related to the portable terminal B is not updated, the process may return to S41 without performing the process of S44. .
[0065]
In S45, the lost item list stored in the lost item information DB 305 is updated based on the result of the lost item determination process in S44. Specifically, this is added to the list for the portable terminal B newly determined as a lost item in S44. In the present embodiment, the portable terminal B once registered in the lost item list is basically registered, but is deleted from the lost item list in certain cases. When the mobile terminal B is moved (for example, when the owner notices that it has been dropped), the mobile terminal B is deleted along with a collection instruction notification in S48 described later. For example, the type terminal B is collected or the information transmission from the portable terminal B is canceled by an information transmission stop instruction in S49 described later. In this way, the amount of data can be reduced by deleting from the lost item list what is not necessary to be registered, and it is possible to cope with the case where the owner notices that it has been dropped later and picks it up.
[0066]
Next, in S46, the lost item list updated in S45 is transmitted to the in-vehicle terminal A by the communication device 306. In-vehicle terminal A that has received this can determine whether or not it is a portable terminal B that is a lost item.
[0067]
In S47, it is determined whether there is a new lost-portable portable terminal B. If there is a new lost item, the process proceeds to S48, and if not, the process returns to S41. In S48, the communication device 307 notifies a predetermined contact address of an instruction to collect a new lost-item portable terminal B. As described above, the predetermined contact address can include, for example, an administrative organization such as a police station having jurisdiction over the area where the lost item is located. The notification can include various wired and wireless communication methods such as e-mail and FAX. By notifying such a collection instruction, smooth collection of the portable terminal B of the lost item is promoted, and not only can the owner who seems to be in trouble losing it be supported, but also the portable terminal By removing the device B from the road, it is possible to support smooth running of the vehicle.
[0068]
Next, in S49, the communication device 306 instructs the new lost-portable portable terminal B to stop transmitting information. Specifically, after indicating that it is an information transmission stop instruction, the terminal ID of the portable terminal B which is the object is transmitted. In this way, by stopping the transmission of information from the portable terminal B of the lost article, it will not be received by the in-vehicle terminal A and will not be subject to collision determination. Thus, it is possible to avoid an erroneous notification of a collision based on the portable terminal B and to notify a collision necessary for an occupant.
[0069]
Next, the process of the vehicle-mounted terminal device A and the process of the portable terminal device B in this embodiment will be described. First, to explain from the former, in this embodiment, the basic processing of the in-vehicle terminal A is the same as that in FIG. The lost item list (S46) transmitted from the management apparatus C can be received in the information reception process of S3. Fig.11 (a) is a flowchart which shows the example of the alerting | reporting process of the vehicle-mounted terminal device A in this embodiment. Hereinafter, only processing different from the notification processing of FIG.
[0070]
In the case of the notification process in FIG. 3B, the lost article determination process is performed in S11. In the case of this example, by checking the lost article list received from the management apparatus C, the mobile phone whose collision possibility is affirmed in S11. It is determined whether the type terminal B is a lost item. If the terminal ID of the portable terminal B is registered in the lost item list, it is determined as a lost item, and if not, it is determined as not a lost item. The following processing is the same as the processing in FIG.
[0071]
Next, FIG. 11B is a flowchart illustrating an example of processing of the portable terminal device B in the present embodiment, which is executed by the CPU 201. In S61, information is received by the communication device 206. In the present embodiment, the information received here is only the information transmission stop instruction transmitted from the management apparatus C, and other information is canceled. In S62, it is determined whether or not its own terminal ID is specified in the received information transmission stop instruction. If it is specified, the process proceeds to S65 and the process is stopped. As a result, no information is transmitted from the portable terminal B until cancellation is canceled.
[0072]
On the other hand, if the information transmission stop instruction is not received in S62 or if the terminal ID of the terminal is not specified, the process proceeds to S63, and the current position information is acquired from the GPS sensor 205. Subsequently, in S64, the information acquired in S63 is transmitted to the in-vehicle terminal A or the management device C, and the process returns to S61.
[0073]
As described above, according to the present embodiment, the management device C supports the traveling of the vehicle by determining whether or not it is a portable terminal B of a lost item. How to configure the system using the management device C Various modes are conceivable. First, there is a configuration in which only one management device C is installed and relay stations are provided in various places so that information communication between the management device C and the in-vehicle terminal A and the pedestrian terminal B is performed via the relay station. It is done. In this case, each information can be unified in one management apparatus C.
[0074]
On the other hand, the structure which arrange | positions the management apparatus C for every district, respectively, and manages each information by each district unit is mentioned. In this case, it is possible to perform quick processing by performing information communication between the management device C, the in-vehicle terminal A, and the pedestrian terminal B without using a relay station. Of course, a system in which both of these configurations are mixed may be used.
[0075]
In any case, in order to reduce the number of relay stations and management devices C installed, a communication device for the management device C having a wider communication range is added to the in-vehicle terminal A, and this communication device and the in-vehicle A communication device with a narrower communication range, which is used for information communication between the terminals A or between the in-vehicle terminal A and the portable terminal B, may be provided. In this case, the information transmitted from the portable terminal B is included in the transmission information of the in-vehicle terminal A as shown in FIG. 9C, and is transmitted to the management device C through the in-vehicle terminal A. be able to.
[0076]
<Third Embodiment>
In the second embodiment described above, the portable terminal B stops transmission of information according to an instruction from the management device C. However, in this embodiment, the portable terminal B determines whether or not to stop information transmission, The information transmission is canceled by itself. This embodiment can also be used in the system of the first embodiment that does not use the management apparatus C.
[0077]
FIG. 12A is a flowchart showing an example of processing of the portable terminal B in the present embodiment, which is processing executed by the CPU 201. In S71, information on the current position is acquired from the GPS sensor 205. In S72, the movement history table is updated with the information on the current position acquired in S71. FIG. 12B is a diagram showing an example of a movement history table, in which position information (“position”) acquired from the GPS sensor 205 is recorded for a certain period of time from the latest together with “time”. “Time” is acquired from the clock IC 207. The movement history of the portable terminal B can be known by recording the position information in this way.
[0078]
In S73, the position at each time is read from the movement history table updated in S72, and the change in position within a certain time is calculated. In calculating the change in position, it is desirable to calculate by subtracting the positioning error by the GPS sensor 205. If the amount of change in position exceeds a predetermined threshold, it is determined that there is a movement, and if not, it is determined that there is no movement.
[0079]
In S74, if it is determined that there is a movement within a predetermined time according to the processing result of S73, the process proceeds to S75 because it is not a lost article, and the position information acquired in S71 is transmitted. On the other hand, if it is determined in S74 that there is no movement within a certain time, the process proceeds to S76 because it is a lost article, and the process is stopped. Thereby, information is not transmitted from the portable terminal B until cancellation is canceled.
[0080]
As described above, in this embodiment, the portable terminal B side determines whether or not it is a lost object, and if it is determined to be a lost object, the in-vehicle terminal A receives this by stopping the transmission of information. There is nothing. Therefore, in the in-vehicle terminal A, for example, it is no longer subject to the collision determination, so that it is possible for the passenger to avoid the erroneous notification of the collision based on the portable terminal B of the lost item easily and reliably. A collision can be notified.
[0081]
【The invention's effect】
As described above, according to the present invention, it is possible to avoid an erroneous notification of a collision based on a portable terminal of a lost article, and to perform a notification of a collision necessary for a passenger.
[Brief description of the drawings]
FIG. 1 is a schematic diagram of a driving support system according to a first embodiment of the present invention.
2A is a block diagram illustrating a configuration example of an in-vehicle terminal A, and FIG. 2B is a block diagram illustrating a configuration example of a portable terminal B;
3A is a flowchart illustrating an example of information communication processing, and FIG. 3B is a flowchart illustrating an example of notification processing.
4A is a diagram illustrating an example of information transmitted from the in-vehicle terminal A, and FIG. 4B is a diagram illustrating an example of a table of other mobile information.
FIGS. 5A and 5B are flowcharts illustrating an example of lost object determination processing.
6A is a diagram illustrating an example of normal notification, and FIG. 6B is a diagram illustrating an example of regulation notification.
FIGS. 7A and 7B are explanatory diagrams of lost object determination processing in FIG.
FIG. 8 is a schematic diagram of a driving support system according to a second embodiment of the present invention.
9A is a block diagram showing an example of the configuration of the management device C, FIG. 9B is a diagram showing an example of a lost item list, and FIG. 9C is transmitted from the in-vehicle terminal A in the second embodiment of the present invention. It is a figure which shows the example of the information.
10 is a flowchart showing an example of information communication processing by the management apparatus C. FIG.
11A is a flowchart showing an example of notification processing in the second embodiment of the present invention, and FIG. 11B is a flowchart showing processing of the portable terminal B in the second embodiment of the present invention.
FIG. 12A is a flowchart showing an example of processing of the portable terminal B in the third embodiment of the present invention, and FIG. 12B is a diagram showing an example of a movement history table.
[Explanation of symbols]
A In-vehicle terminal
B Portable terminal
C Management device
104 Map information DB
111, 205 GPS sensor
112 Vehicle speed sensor
113, 206, 306, 307 Communication device

Claims (10)

An in-vehicle terminal device mounted on a vehicle and a portable terminal device carried by a pedestrian, information between a plurality of the in-vehicle terminal devices and between the in-vehicle terminal device and the portable terminal device A vehicle driving support system that performs communication,
The portable terminal is
Portable position detecting means for detecting the position of the portable terminal;
Portable side communication means for transmitting portable position information indicating the position detected by the portable position detection means to the in-vehicle terminal, and
The in-vehicle terminal is
Vehicle position detecting means for detecting the position of the vehicle;
Vehicle-side communication means for receiving the portable position information from the portable terminal;
A collision determination unit that determines a collision possibility between the vehicle and the pedestrian based on the position of the vehicle detected by the vehicle position detection unit and the portable position information received by the vehicle side communication unit; ,
Lost article determination means for determining whether the portable terminal device that has received the portable position information is a portable terminal of a lost article;
Informing means for informing the collision according to the determination result of the collision determining means,
The said notification means regulates the said notification, when it determines with the falling thing determination means by the said falling thing determination means, The driving assistance system characterized by the above-mentioned. A vehicle travel support system comprising: a vehicle-mounted terminal device mounted on a vehicle; a portable terminal device carried by a pedestrian; and a management device that manages information on the vehicle-mounted terminal device and the portable terminal device. And
The portable terminal is
Portable position detecting means for detecting the position of the portable terminal;
Portable side communication means for transmitting portable position information indicating the position detected by the portable position detection means to the in-vehicle terminal, and
The in-vehicle terminal is
Vehicle position detecting means for detecting the position of the vehicle;
Vehicle-side communication means for receiving the portable position information from the portable terminal and transmitting the portable position information to the management device;
A collision determination unit that determines a collision possibility between the vehicle and the pedestrian based on the position of the vehicle detected by the vehicle position detection unit and the portable position information received by the vehicle side communication unit; ,
Informing means for informing the collision according to the determination result of the collision determining means,
The management device is
Management-side communication means for receiving the mobile location information from the in-vehicle terminal;
Lost article determination means for determining whether or not the portable terminal that has received the portable position information is a portable terminal of a lost article,
The management device transmits the determination result of the lost article determination means to the in-vehicle terminal by the management communication means,
The in-vehicle terminal is
The determination result is received by the vehicle side communication means,
The notification means regulates the notification when the received determination result is a lost article. A vehicle travel support system comprising: a vehicle-mounted terminal device mounted on a vehicle; a portable terminal device carried by a pedestrian; and a management device that manages information on the vehicle-mounted terminal device and the portable terminal device. And
The portable terminal is
Portable position detecting means for detecting the position of the portable terminal;
Portable side communication means for transmitting portable position information indicating the position detected by the portable position detection means to the in-vehicle terminal and the management device,
The in-vehicle terminal is
Vehicle position detecting means for detecting the position of the vehicle;
Vehicle-side communication means for receiving the portable position information from the portable terminal;
A collision determination unit that determines a collision possibility between the vehicle and the pedestrian based on the position of the vehicle detected by the vehicle position detection unit and the portable position information received by the vehicle side communication unit; ,
Informing means for informing the collision according to the determination result of the collision determining means,
The management device is
Management-side communication means for receiving the mobile location information from the mobile terminal;
Lost article determination means for determining whether or not the portable terminal that has received the portable position information is a portable terminal of a lost article,
The management device transmits the determination result of the lost article determination means to the in-vehicle terminal by the management communication means,
The in-vehicle terminal is
The determination result is received by the vehicle side communication means,
The notification means regulates the notification when the received determination result is a lost article. The management device further comprises:
4. The driving support system according to claim 2, further comprising a notification unit that notifies a predetermined contact of a recovery instruction for a lost item when the lost item determination unit determines that the item is a lost item. The management device
When it is determined by the lost article determining means that it is a lost article, the portable communication device that has been determined to be the lost article transmits an instruction to stop transmission of the portable position information by the management side communication means,
The portable terminal is
4. The travel support system according to claim 2, wherein, when the transmission stop instruction is received by the mobile side communication unit, transmission of the mobile location information to the in-vehicle terminal is stopped. 5. An in-vehicle terminal mounted on a vehicle,
Detecting means for detecting the position of the vehicle;
Communication means for receiving portable position information indicating the position of the portable terminal from a portable terminal carried by a pedestrian;
A collision determination unit that determines a collision possibility between the vehicle and the pedestrian based on the position of the vehicle detected by the detection unit and the portable position information received by the communication unit;
Lost article determination means for determining whether the portable terminal device that has received the portable position information is a portable terminal of a lost article;
Informing means for informing the collision according to the determination result of the collision determining means,
The vehicle-mounted terminal device, wherein the notification means regulates the notification when it is determined as a lost object by the lost article determination means. The lost article determining means includes:
Based on the portable position information received by the communication means, a change in the position of the portable terminal is calculated, and based on the calculated change in position, the portable terminal is a portable terminal that is a lost item. The vehicle-mounted terminal device according to claim 6, wherein: The communication means includes
Receiving vehicle position information indicating the position of the other vehicle from another vehicle;
The lost article determining means includes:
Based on the vehicle position information and the portable position information received by the communication means, it is determined whether or not the other vehicle has passed the position of the portable terminal. The in-vehicle terminal according to claim 6, wherein when it is determined that the position of the portable terminal has passed, the portable terminal is determined to be a lost article. The lost article determining means includes:
The in-vehicle terminal according to claim 8, wherein when it is determined that a plurality of the other vehicles have passed the position of the portable terminal, the portable terminal is determined to be a lost item. A portable terminal carried by a pedestrian,
Detecting means for detecting a position of the portable terminal;
Communication means for transmitting position information indicating the position of the portable terminal detected by the detection means to an in-vehicle terminal mounted on a vehicle;
Calculation means for calculating a change in the position of the portable terminal based on the position of the portable terminal detected by the detection means;
The communication means stops transmission of the position information based on the change in the position calculated by the calculation means.

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