JP2018160002A - Collision prevention device, communication system, collision prevention method, and computer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce danger that a user collides with a person in the circumference without depending on a circumferential congestion state.SOLUTION: A collision prevention device includes: condition determination means for determining presence/absence of establishment of a first condition indicating that a walking use of a smartphone is detected in an object terminal and also that a distance between the object terminal and a circumferential terminal becomes equal to or less than a first distance being the distance requiring collision prevention control with respect to the object terminal; and collision avoidance control means for determining presence/absence of a possibility that the object terminal collides with/approaches the circumferential terminal at a predetermined time point on the basis of first information including information related to a movement of the object terminal and second information including information related to a movement of the circumferential terminal when the first condition is established, calculating avoidance information including an avoidance speed being a mobile speed of the object terminal and an avoidance direction being a moving direction of the object terminal, both of which increase a possibility that a collision or an approach between the object terminal and the circumferential terminal at the time point is avoided, on the basis of the first information and the second information when there is a possibility of a collision or an approach, and then transmitting calculated avoidance information to the object terminal.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a collision prevention device, a communication system, a collision prevention method, and a computer program that prevent a collision, in particular, a collision between a user of a mobile terminal and a person around.

  When a user walks while operating a mobile terminal (a so-called walking smartphone), attention to the user's surroundings becomes insufficient, and collision with surrounding people becomes a problem. Therefore, various measures have been taken to prevent collision accidents with others by walking smartphones.

  Patent Document 1 describes a configuration in which a walking smartphone itself cannot be performed by restricting part or all of the functions of a communication terminal when the number of communication terminals connected in an access point is a certain number or more. ing.

  Patent Document 2 describes that, when the density of a moving body in a predetermined range where an operation pedestrian is walking is higher than a predetermined threshold, the operation pedestrian is notified of congestion information. ing.

  Patent Document 3 describes a technique for calling attention to a user of a mobile terminal belonging to an area where the value of the dangerous person density (the density of dangerous persons in a predetermined area) is equal to or greater than a predetermined threshold value. .

  In Patent Document 4, the possibility of collision between a vehicle and a monitoring target is determined based on the vehicle travel information (position, speed, acceleration, etc.) received from the in-vehicle device and the position of the monitoring target received from the mobile terminal. However, there is described a configuration that warns both the in-vehicle device and the mobile terminal when there is a possibility of collision.

JP 2006-0119174 A Japanese Patent Laying-Open No. 2015-133003 Japanese Patent Laid-Open No. 2006-157178 JP 2010-055244 A

  However, the risk of collision may not necessarily depend on the number of people around the user in the walking smartphone or the density of people in the area where the user exists. For example, even when there are many people around the user, the risk of collision is low when many people including the user are moving in the same direction. On the other hand, even if the number of people around the user in the walking smartphone is small, or even when the density of people in the area where the user exists is low, for example, both are at the same speed with respect to the same point. There is a high risk of collision when moving in In other words, any of the techniques disclosed in Patent Documents 1 to 3 may not be able to avoid a collision when there are few people around the user who is walking.

  Further, the technique of Patent Document 4 allows the user to recognize that there is a danger of a collision, and thus can take some preventive action. However, since specific information for collision prevention is not provided, the preventive action is left to the user and the surrounding people. In this case, when the user and the surrounding people move for avoidance toward the same point, the intention of avoidance collides in the opposite direction. That is, it is difficult to sufficiently reduce the risk of collision with the technique of Patent Document 4.

  The present invention has been made to solve the above-described problem, and a collision prevention apparatus and a communication system that can further reduce the risk of a user colliding with a surrounding person without depending on the surrounding congestion situation. An object is to provide a collision prevention method and a computer program.

  In the collision prevention apparatus of the present invention, a walking smartphone is detected at the target terminal, and the distance between the target terminal and the surrounding terminals is a distance that requires collision prevention control on the target terminal. Condition determining means for determining whether or not the first condition indicating that the distance is equal to or less than the distance is satisfied; and when the first condition is satisfied, the first information including information regarding the movement of the target terminal and the movement of the surrounding terminals Based on the second information including information, the target terminal and the surrounding terminal determine whether or not there is a possibility of collision or approach at a predetermined time, and if there is a possibility of collision or approach, the first information and Based on the second information, an avoidance speed, which is a movement speed of the target terminal, which increases a possibility of avoiding a collision or approach between the target terminal and the surrounding terminal at the time point, and a shift of the target terminal. Calculating an avoidance information including the avoidance direction is a direction, the calculated the avoidance information and a collision avoidance control means for transmitting to the target terminal.

  A communication system of the present invention includes a target terminal that is a target of collision prevention control, a peripheral terminal that exists around the target terminal, and a collision prevention device, and the collision prevention device is configured to Whether or not the first condition indicating that the distance between the target terminal and the surrounding terminal is detected is equal to or less than a first distance that is a distance that requires anti-collision control with respect to the target terminal. The target terminal based on first condition information including information related to the movement of the target terminal and second information including information related to the movement of the surrounding terminals when the first condition is satisfied. And determining whether or not the surrounding terminal may collide or approach at a predetermined time point, and if there is a possibility of collision or approaching, the pair of terminals at the time point is determined based on the first information and the second information. Calculate avoidance information including an avoidance speed that is a movement speed of the target terminal and an avoidance direction that is a movement direction of the target terminal, in which a possibility that a collision or approach between the terminal and the surrounding terminal is avoided increases. Collision avoidance control means for transmitting the avoidance information to the target terminal, and the target terminal includes information presentation means for forcefully expressing the avoidance information.

  According to the collision prevention method of the present invention, a walking smartphone is detected at a target terminal, and a distance between the target terminal and a surrounding terminal is a distance that requires collision prevention control with respect to the target terminal. It is determined whether or not a first condition indicating that the distance is equal to or less than a distance is satisfied, and when the first condition is satisfied, first information including information related to movement of the target terminal and information related to movement of the surrounding terminals Based on the two information, it is determined whether or not the target terminal and the surrounding terminal may collide or approach at a predetermined time, and when there is a possibility of collision or approach, the first information and the second information Based on the above, the avoidance speed that is the moving speed of the target terminal and the avoidance that is the moving direction of the target terminal that increase the possibility of avoiding a collision or approach between the target terminal and the surrounding terminals at the time point Calculating an avoidance information including the direction, the calculated the avoidance information and transmits to the target terminal.

  According to the computer program of the present invention, the computer of the collision prevention apparatus detects a smartphone walking at the target terminal, and the distance between the target terminal and the surrounding terminal needs to be prevented from colliding with the target terminal. A condition determination process for determining whether or not a first condition indicating that the first distance is equal to or less than the first distance is satisfied, and first information including information related to movement of the target terminal when the first condition is satisfied; When there is a possibility of collision or approach by determining whether or not the target terminal and the surrounding terminal may collide or approach at a predetermined time point based on second information including information related to movement of the surrounding terminal Based on the first information and the second information, the transition of the target terminal is likely to avoid a collision or approach between the target terminal and the surrounding terminal at the time point. A collision avoidance control process for calculating avoidance information including an avoidance speed that is a speed and an avoidance direction that is a movement direction of the target terminal, and transmitting the calculated avoidance information to the target terminal. It is.

  According to the present invention, it is possible to further reduce the risk of a user colliding with a surrounding person without depending on the surrounding congestion situation.

It is a block diagram which shows the structural example of the collision prevention apparatus which concerns on the 1st Embodiment of this invention. It is a flowchart for demonstrating the operation example of the collision prevention apparatus shown in FIG. It is a block diagram which shows the structural example of the information processing apparatus which concerns on the 2nd Embodiment of this invention. It is a block diagram which shows the structural example of the communication system which concerns on the 3rd Embodiment of this invention. 5 is a sequence chart for explaining an example of an operation between devices of the communication system shown in FIG.

[First Embodiment]
(Description of configuration)
FIG. 1 is a block diagram illustrating a configuration example of a collision prevention apparatus 1 according to the first embodiment of the present invention. The collision prevention apparatus 1 includes a condition determination unit 2 (an example of a condition determination unit) and a collision avoidance control unit 3 (an example of a collision avoidance control unit).

  The condition determination unit 2 prevents the smartphone from walking at the target terminal (not shown in FIG. 1), and the distance between the target terminal and the surrounding terminals (not shown in FIG. 1) prevents collision with the target terminal. It is determined whether or not a first condition indicating that the distance is equal to or less than a first distance that is a distance that requires control is satisfied.

  In the above, the peripheral terminal refers to one or a plurality of terminals existing around the target terminal.

  Further, in the above, “walking smartphone” refers to an action of a user walking while operating a target terminal. The walking smartphone is not only operated, but also refers to a state in which the user is immersed and operated so that attention cannot be directed to the surroundings, or a state in which the line of sight is directed to the screen. In other embodiments including this embodiment, it is assumed that the walking smartphone includes all these states. “Smartphone” is an abbreviation for a smartphone, but it is only used symbolically. The target terminal is not limited to a smartphone, but is a mobile / wireless terminal in general.

  In addition, for example, the target terminal is determined to be a walking smartphone when the position of the target terminal changes (that is, the target terminal moves) and a state where the operation unit of the target terminal is operated is detected. To do.

  In addition, the method for determining whether or not the distance between the target terminal and the surrounding terminals is equal to or less than the first distance in the condition determination unit 2 is arbitrary. For example, as in the third embodiment described below, the condition determination unit 2 includes information indicating whether or not the target terminal and the surrounding terminal are within a predetermined communication range (for example, communication between terminals is performed). Whether or not the distance is equal to or less than the first distance can be determined based on the presence or absence of the identifier of the target terminal. Or the condition determination part 2 collects each positional information on an object terminal and a surrounding terminal regularly with a predetermined period, and calculates the difference (namely, distance) of both at the timing when a walking smartphone was detected. The calculated distance is compared with the first distance.

  When the first condition is satisfied, the collision avoidance control unit 3 determines that the target terminal and the peripheral terminal are based on the first information including information related to the movement of the target terminal and the second information including information related to the movement of the peripheral terminal. Determines whether there is a possibility of collision or approach at a predetermined time. When there is a possibility of collision or approach, the collision avoidance control unit 3 calculates avoidance information based on the first information and the second information, and transmits the calculated avoidance information to the target terminal.

  The avoidance information includes an avoidance speed that is a movement speed of the target terminal and an avoidance direction that is a movement direction of the target terminal, which increase the possibility of avoiding a collision and approach between the target terminal and the surrounding terminals at the time point.

  In the above, the first information includes, for example, position information and speed vector information (movement speed and movement direction) of the target terminal. Further, the second information includes, for example, position information and speed vector information (moving speed and moving direction) of surrounding terminals.

  Each speed vector information of the target terminal and the surrounding terminals can be calculated based on, for example, a change in the position of each terminal.

  Each speed vector information can be calculated at each terminal. In this case, each terminal creates position change information (information representing each change in time and coordinates) by periodically recording its own position by using a position detection device such as GPS (Global Positioning System). Then, speed vector information is calculated based on the position change information.

  Each speed vector information can be calculated by the collision preventing apparatus 1. In this case, the collision prevention apparatus 1 periodically receives and records each position from each terminal to create position change information of each terminal, and calculates velocity vector information based on this position change information.

In addition, the determination of the collision or approach in the collision avoidance control unit 3 is executed, for example, by executing a predetermined collision simulation with the first information and the second information as inputs. The calculation of the avoidance information in the collision avoidance control unit 3 is executed by executing an avoidance simulation based on the first information and the second information, for example. The execution method of each simulation and the model used may be existing.
(Description of operation)
FIG. 2 is a flowchart for explaining an operation example of the collision preventing apparatus 1 shown in FIG. The condition determination unit 2 determines whether or not the first condition is satisfied (step S100). When the first condition is not satisfied (No in step S100), the process in step S100 is executed again.

  When the first condition is satisfied (Yes in step S100), the collision avoidance control unit 3 may cause the target terminal and the surrounding terminals to collide or approach at a predetermined time based on the first information and the second information. The presence or absence is determined (step S101). When it is determined that there is no possibility of collision or approach (No in step S101), the process in step S100 is executed again.

When it is determined that there is a possibility of collision or approach (Yes in step S101), the collision avoidance control unit 3 calculates avoidance information (avoidance speed and avoidance direction) based on the first information and the second information. (Step S102). The collision avoidance control unit 3 transmits the calculated avoidance information to the target terminal (step S103).
(Explanation of effect)
In the first embodiment described above, when the first condition is satisfied, the collision prevention control in the collision prevention apparatus 1 (the processing in steps S101 to S103 in FIG. 2) is executed. That is, in this embodiment, the collision prevention control is executed without depending on the number of people around the user in the walking smartphone or the density of people in the area where the user is present.

  Furthermore, the present embodiment is not limited to predicting a collision between a user and surrounding people, but calculates avoidance information about the target terminal, and transmits the calculated avoidance information to the target terminal. The avoidance information includes an avoidance speed that is a movement speed of the target terminal and an avoidance direction that is the movement direction of the target terminal and the surrounding terminals that are highly likely to avoid a collision or approach at a predetermined time.

Summarizing the above, according to the first embodiment, there is a risk that the user may collide with the surrounding people without depending on the surrounding congestion situation, especially when there are few people around the walking smartphone. It is possible to further reduce the property.
[Second Embodiment]
FIG. 3 is an example in which the collision prevention apparatus 1 shown in FIG. 1 is realized by a computer, and is a block diagram showing a configuration example of the collision prevention apparatus 30 according to the second embodiment of the present invention. The collision prevention device 30 includes a storage unit 32 and a calculation unit 34 including a processor and the like. The storage unit 32 is a computer-readable recording medium and stores the computer program 40. The computer program 40 is, for example, a program for causing the calculation unit 34 to execute the process shown in FIG.

  According to the second embodiment described above, as in the first embodiment, the user is not dependent on the surrounding congestion situation, even when there are few people around the user who is walking smartphone. It becomes possible to further reduce the risk of collision with people around you.

Examples of the calculation unit 34 include a CPU (Central Processing Unit) and a memory that stores instructions executed by the CPU. The computer-readable recording medium is, for example, a non-transitory storage device. Examples of the non-transitory storage device include an optical disk, a magnetic disk, a ROM (Read Only Memory), a portable medium such as a nonvolatile semiconductor memory, and a hard disk built in the computer system. The computer-readable recording medium may be a temporary storage device. As an example of a temporary storage device, for example, a communication line in the case of transmitting a program via a network such as the Internet or a communication line such as a telephone line, or a volatile memory inside a computer system can be cited.
[Third Embodiment]
(Description of configuration)
FIG. 4 is a block diagram illustrating a configuration example of a communication system 50 according to the third embodiment of the present invention. The communication system 50 includes a collision prevention apparatus 100, a target terminal 101, and surrounding terminals 102. The collision prevention apparatus 100 is connected to the target terminal 101 and the surrounding terminals 102 via the network 103. Further, the target terminal 101 and the surrounding terminals 102 can directly communicate with each other within a communication range corresponding to the first distance for which the collision prevention control for the target terminal 101 is necessary (P2P (Peer to Peer) communication). (Also called a network). Therefore, when the target terminal 101 and the surrounding terminal 102 are separated from each other by the first distance or more, the target terminal 101 and the surrounding terminal 102 cannot communicate via the direct communication network. The direct communication network is, for example, a short-range wireless communication network. It is sufficient that the first distance and the communication range of the direct communication network correspond to each other, and how to determine them is arbitrary. For example, when the communication range can be adjusted between the target terminal 101 and the surrounding terminals 102, the target terminal 101 may adjust the communication range to the first distance.

  The target terminal 101 is a terminal that is subject to collision prevention. The target terminal 101 includes a terminal information creation unit 202, a walking smartphone detection unit 203, and an information presentation unit 204.

  The terminal information creation unit 202 creates “target terminal information” (an example of first information) including information related to movement of the target terminal 101. The target terminal information includes, for example, position information and speed vector information (moving speed and moving direction) of the target terminal 101. The velocity vector information can be calculated based on, for example, a change in the position of the target terminal 101. For example, the terminal information creation unit 202 creates position change information (information representing each change in time and coordinates) by periodically recording the position of the target terminal 101 by using a position detection device such as GPS. Based on this position change information, velocity vector information is calculated.

  The walking smartphone detection unit 203 detects whether or not the target terminal 101 is walking. The walking smartphone detection unit 203 detects, for example, a state in which the position of the target terminal 101 has changed (that is, the target terminal 101 has moved) and the operation unit (not shown) of the target terminal 101 is being operated. It is determined that you are walking on your smartphone.

  When the walking smartphone is detected, the walking smartphone detection unit 203 transmits the identifier of the target terminal 101 (hereinafter referred to as “target terminal identifier”) to the surrounding terminals 102 via the direct communication network. In addition, the walking smartphone detection unit 203 transmits a target terminal identifier and target terminal information to the collision prevention apparatus 100.

  The information presentation unit 204 presents various presentation information to the user of the target terminal 101. The presentation information includes at least avoidance information (details will be described later) for preventing collision between users. In order to present the presentation information, the information presentation unit 204 includes a visual interface that visually presents information by an image or light, an auditory interface that auditorily presents information by voice or a warning sound, and intuitively information. At least a haptic interface that happily presents information to convey it. The haptic interface includes, for example, a vibrator and an actuator driven by the vibrator.

  For example, when the avoidance information is displayed as a force sense, the force sense interface of the information presentation unit 204 includes a plurality of vibrators each capable of changing the strength of vibration. And a force sense interface gives the user the feeling pulled by the avoidance method by vibrating only the vibrator corresponding to the avoidance direction included in the avoidance information. Further, the force sense interface vibrates the corresponding vibrator with a strength corresponding to the avoidance speed included in the avoidance information. With the above operation, the haptic interface intuitively conveys avoidance information to the user.

  The peripheral terminal 102 is one or a plurality of terminals existing around the target terminal 101. The surrounding terminal 102 includes a terminal information creation unit 212, a surrounding walking smartphone recognition unit 213, and an information presentation unit 214.

  The terminal information creation unit 212 creates “peripheral terminal information” (an example of second information) including information related to movement of the peripheral terminal 102. The surrounding terminal information includes, for example, position information and speed vector information (moving speed and moving direction) of the surrounding terminal 102. The velocity vector information can be calculated based on, for example, a change in the position of the surrounding terminal 102. For example, the terminal information creation unit 212 creates position change information (information representing each change in time and coordinates) by periodically recording the position of the surrounding terminal 102 by using a position detection device such as GPS. Based on this position change information, velocity vector information is calculated.

  The surrounding walking smartphone recognition unit 213 checks whether or not there is a terminal (for example, the target terminal 101) that is “walking smartphone” around the surrounding terminal 102. Specifically, the surrounding walking smartphone recognizing unit 213 checks whether or not the target terminal identifier is received from the target terminal 101 via the direct communication network. When the target terminal identifier is received (that is, when the target terminal 101 is walking around the smartphone), the surrounding walking smartphone recognizing unit 213 notifies the collision prevention apparatus 100 of the target terminal identifier and the identifier of the surrounding terminal 102. (Hereinafter referred to as “peripheral terminal identifier”) and peripheral terminal information.

  When the surrounding terminal 102 and the target terminal 101 are separated from each other by the first distance, the surrounding terminal 102 cannot receive the target terminal identifier. However, in this case, regardless of whether the target terminal 101 is walking or making a smartphone, there is no problem because the distance between the two is more than a certain distance and the risk of collision is low.

  The information presentation unit 214 presents various presentation information to the users of the target terminal 101 and the surrounding terminals 102. The presentation information includes at least warning information for preventing collision between users. The presentation information is presented to the user through a visual interface, an auditory interface, or a haptic interface, as with the target terminal 101.

  In the above description, only functions necessary for the target terminal 101 and functions necessary for the peripheral terminal 102 are described. In general, a predetermined terminal is rarely always one terminal, and sometimes becomes a target terminal 101 and sometimes becomes a surrounding terminal 102. Therefore, the target terminal 101 and the surrounding terminals 102 can have the same configuration.

  The collision prevention apparatus 100 includes a condition determination unit 222 and a collision avoidance control unit 223.

  The condition determination unit 222 satisfies the first condition (a condition indicating that a walking smartphone at the target terminal 101 is detected and the distance between the target terminal 101 and the surrounding terminals is equal to or less than the first distance). It is determined whether or not. Specifically, the condition determination unit 222 includes the target terminal identifier (first target terminal identifier) transmitted from the target terminal 101 to the collision prevention device 100 via the network 103, and the collision prevention device via the surrounding terminal 102. It is determined whether or not both of the target terminal identifiers (second target terminal identifiers) transmitted to 100 have been received. When both the first target terminal identifier and the second target terminal identifier are received, the condition determination unit 222 determines that the first condition is satisfied. On the other hand, when neither one of the first target terminal identifier and the second target terminal identifier is received, the condition determination unit 222 determines that the first condition is not satisfied. Note that the absence of one of the identifiers means that the target terminal 101 is not walking or is originally a smartphone, or the target terminal 101 is walking but the distance between the target terminal 101 and the surrounding terminal 102 is This is the case of the first distance or more.

The collision avoidance control unit 223 determines whether or not the target terminal 101 and the surrounding terminal 102 may collide or approach at a predetermined time point based on the first information and the second information when the first condition is satisfied. To do. When there is a possibility of a collision or approach, the collision avoidance control unit 223 calculates avoidance information based on the first information and the second information, and transmits the calculated avoidance information to the target terminal 101.
(Description of operation)
FIG. 5 is a sequence chart for explaining an example of the operation between the devices of the communication system 50 shown in FIG.

  The terminal information creation unit 202 of the target terminal 101 creates target terminal information including information regarding movement of the target terminal 101 (step S1). Here, the target terminal information includes position information of the target terminal 101 and speed vector information. The terminal information creation unit 212 of the surrounding terminal 102 creates surrounding terminal information (step S2). The surrounding terminal information includes position information and speed vector information of the surrounding terminal 102. Note that step S1 and step S2 may be performed simultaneously or in reverse order.

  The walking smartphone detection unit 203 of the target terminal 101 detects whether or not the target terminal 101 is walking (step S3). The detection of the walking smartphone is as described above. If no walking smartphone is detected, the process of step S1 is executed again.

  On the other hand, when the walking smartphone is detected, the walking smartphone detection unit 203 transmits the target terminal identifier to the surrounding terminals 102 via the direct communication network (step S4). In addition, the walking smartphone detection unit 203 transmits the target terminal identifier and the target terminal information to the collision prevention apparatus 100 (step S5). Note that the order of step S1 and step S3 may be reversed. That is, the target terminal information may be created after the walking smartphone is detected. Moreover, step S4 and step S5 may be performed simultaneously, or may be performed in reverse order.

  The surrounding walking smartphone recognition unit 213 of the surrounding terminal 102 determines whether the target terminal identifier is received from the target terminal 101 (step S6). When the target terminal identifier is received, the surrounding walking smartphone recognition unit 213 transmits the target terminal identifier, the surrounding terminal identifier, and the surrounding terminal information to the collision prevention apparatus 100 (step S7).

  The condition determination unit 222 of the collision prediction apparatus 100 determines whether or not the first condition is satisfied (step S8). Specifically, the condition determination unit 222 determines whether or not both the first target terminal identifier and the second target terminal identifier have been received.

  If it is determined that the first condition is not satisfied, the process of step S8 is executed again.

  On the other hand, when it is determined that the first condition is satisfied, the collision avoidance control unit 223 can cause the target terminal 101 and the surrounding terminal 102 to collide or approach at a predetermined time based on the first information and the second information. Determine the presence or absence of sex. When there is a possibility of collision or approach, the collision avoidance control unit 223 calculates avoidance information based on the first information and the second information (step S9). The avoidance information includes an avoidance speed and an avoidance direction.

  The collision avoidance control unit 223 transmits the calculated avoidance information to the target terminal 101 (step S10). The collision avoidance control unit 223 transmits warning information, which is information for notifying the danger of collision, to the surrounding terminals 102 (step S11).

  The information presentation unit 204 of the target terminal 101 presents avoidance information (avoidance speed and avoidance direction) to the user of the target terminal 101 using the above-described vibration expression in the haptic interface (step S12). The user feels a sense of being pulled by the target terminal 101 by the vibration expression of the haptic interface. The user only needs to move along this sense of being pulled. Therefore, the presentation of avoidance information using force sense (also referred to as avoidance guidance) is more reliable for movement to prevent collision compared to movement while viewing a map or image display and guidance by voice. It becomes possible to carry out easily and quickly.

The information presentation unit 214 of the surrounding elephant terminal 101 presents the alarm information to the user of the surrounding terminal 102 using, for example, a visual interface (step S13).
(Explanation of effect)
In the third embodiment described above, when the first condition is satisfied, the collision prevention control (processing from steps S8 to S11 in FIG. 2) in the collision prevention apparatus 100 is executed.

  That is, in this embodiment, the collision prevention control is executed without depending on the number of people around the user in the walking smartphone or the density of people in the area where the user is present.

  Furthermore, the present embodiment is not limited to predicting a collision between a user and a surrounding person, but calculates “avoidance information” for the target terminal 101 and transmits the calculated avoidance information to the target terminal 101. The avoidance information includes “avoidance speed” that is a movement speed of the target terminal 101 and a movement direction of the target terminal that increase a possibility that a collision or approach between the target terminal 101 and the surrounding terminals 102 at a predetermined time is increased. Avoidance direction ".

  In summary, according to the third embodiment, there is a risk that the user may collide with the surrounding people without depending on the surrounding congestion situation, especially when there are few people around the walking smartphone. It is possible to further reduce the property.

  Furthermore, in this embodiment, the movement for preventing the collision of the user having the target terminal 101 is performed by following the vibration expression of the haptic interface based on the avoidance information (represented by the difference in vibration location and intensity). The presentation of avoidance information using force sense (also referred to as avoidance guidance) makes it easier and more reliable to move to prevent collisions compared to moving while looking at a map or image display, or using voice guidance. And can be performed quickly.

  Furthermore, in this embodiment, when a walking smartphone is detected by the target terminal 101, only the identifier received by the surrounding terminal 102 via the direct communication network whose communication range is the first distance is the first target terminal identifier. Recognized as On the other hand, the identifier from the target terminal 101 that is more than the first distance is recognized as the first target terminal identifier because it does not reach the surrounding terminal 102 even if the identifier is from the target terminal 101 that is walking. Not. That is, in the present embodiment, a configuration is adopted in which an identifier is sent via a direct communication network having the first distance as a communication range, which means that the target terminal 101 that is walking is a terminal that is subject to collision prevention control. It means that it is selected as a result whether or not.

  Therefore, the determination of whether or not the first condition is satisfied in the present embodiment is extremely simple, such as determining whether or not both the first target terminal identifier and the second target terminal identifier have been received. For example, in the case of a configuration in which identifiers are aggregated to a collision prevention device via a wide area communication network every time a walking smartphone is detected, a process for determining whether or not it is a collision prevention control target in the collision prevention device (with the target terminal 101 and The amount of each position of the surrounding terminal 102 and each distance measurement is extremely large.

In the third embodiment described above, the hardware configuration of the collision prevention apparatus 100 is not limited to the configuration shown in FIG. The hardware configuration of the collision prevention apparatus 100 can be, for example, the configuration shown in FIG. 3 (that is, a configuration in which a calculation unit including a processor realizes a function by executing a computer program).
(Modification)
In the third embodiment described above, the presentation of the avoidance information in the information presentation unit 204 of the target terminal 101 only needs to include presentation by at least a force sense, and further, visual (image, video, light, etc.) or auditory sense Presentation by (guidance voice etc.) may be included.

  As mentioned above, although this invention was demonstrated using each embodiment, the technical scope of this invention is not limited to description of said each embodiment. It is obvious to those skilled in the art that various modifications or improvements can be added to the above embodiments. Therefore, it is needless to say that embodiments with such changes or improvements are also included in the technical scope of the present invention. The numerical values and names of the components used in the embodiments described above are illustrative and can be changed as appropriate.

DESCRIPTION OF SYMBOLS 1 Collision prevention apparatus 2 Condition determination part 3 Collision avoidance control part 30 Collision avoidance apparatus 32 Storage part 34 Calculation part 40 Computer program 50 Communication system 100 Collision prevention apparatus 101 Target terminal 102 Peripheral terminal 103 Network 202 Terminal information preparation part 203 Walking smartphone detection Unit 204 information presentation unit 212 terminal information creation unit 213 surrounding walking smartphone recognition unit 214 information presentation unit 222 condition determination unit 223 collision avoidance control unit

Claims (10)

A first indicating that a walking smartphone is detected at the target terminal, and that the distance between the target terminal and the surrounding terminals is equal to or less than a first distance that is a distance that requires anti-collision control with respect to the target terminal. Condition determining means for determining whether or not one condition is satisfied;
When the first condition is satisfied, the target terminal and the surrounding terminal are at a predetermined time based on the first information including information on the movement of the target terminal and the second information including information on the movement of the surrounding terminal. If there is a possibility of collision or approaching in the event of a collision or approaching, based on the first information and the second information, the collision of the target terminal and the surrounding terminals at the time point or The avoidance information including the avoidance speed that is the moving speed of the target terminal and the avoidance direction that is the moving direction of the target terminal, which increases the possibility of approaching, is calculated, and the calculated avoidance information is used as the target terminal. Collision avoidance control means for transmitting to
An anti-collision device comprising:   When the target terminal detects a walking smartphone, the condition determining means detects a first target terminal identifier that is a target terminal identifier transmitted from the target terminal via the network, and the target terminal detects the walking smartphone. The target terminal identifier transmitted from the target terminal to the surrounding terminal via direct network communication capable of communication within the first distance and transmitted from the surrounding terminal to the collision prevention apparatus. The collision prevention apparatus according to claim 1, wherein it is determined whether or not the first condition is satisfied by determining whether or not both of the second target terminal identifiers are received.   The collision preventing apparatus according to claim 1, wherein the first information includes position information and speed vector information of the target terminal.   The collision preventing apparatus according to claim 3, wherein the speed vector information includes movement speed information and movement direction information of the target terminal.   The collision prevention apparatus according to claim 1, wherein the second information includes position information and velocity vector information of the surrounding terminals.   6. The collision preventing apparatus according to claim 5, wherein the speed vector information includes movement speed information and movement direction information of the surrounding terminals. A target terminal that is subject to collision prevention control;
A surrounding terminal existing around the target terminal;
A collision prevention device,
With
The anti-collision device is
A first indicating that a walking smartphone is detected at the target terminal, and that the distance between the target terminal and the surrounding terminals is equal to or less than a first distance that is a distance that requires anti-collision control with respect to the target terminal. Condition determining means for determining whether or not one condition is satisfied;
When the first condition is satisfied, the target terminal and the surrounding terminal are at a predetermined time based on the first information including information on the movement of the target terminal and the second information including information on the movement of the surrounding terminal. If there is a possibility of collision or approaching in the event of a collision or approaching, based on the first information and the second information, the collision of the target terminal and the surrounding terminals at the time point or The avoidance information including the avoidance speed that is the moving speed of the target terminal and the avoidance direction that is the moving direction of the target terminal, which increases the possibility of approaching, is calculated, and the calculated avoidance information is used as the target terminal. Collision avoidance control means for transmitting to
With
The target terminal includes information presenting means for forcefully expressing the avoidance information.   When the target terminal detects a walking smartphone, the condition determination means includes a first target terminal identifier that is a target terminal identifier transmitted from the target terminal, and the target terminal detects a walking smartphone. The target terminal identifier is transmitted from the target terminal to the surrounding terminal via direct network communication capable of communication within the first distance and transmitted from the surrounding terminal to the collision prevention device. 8. The communication system according to claim 7, wherein whether or not the first condition is satisfied is determined by determining whether or not both of the target terminal identifiers are received. A first indicating that a walking smartphone is detected at the target terminal, and that the distance between the target terminal and the surrounding terminals is equal to or less than a first distance that is a distance that requires anti-collision control with respect to the target terminal. Determine if one condition is met,
When the first condition is satisfied, the target terminal and the surrounding terminal are at a predetermined time based on the first information including information on the movement of the target terminal and the second information including information on the movement of the surrounding terminal. If there is a possibility of collision or approaching in the event of a collision or approaching, based on the first information and the second information, the collision of the target terminal and the surrounding terminals at the time point or The avoidance information including the avoidance speed that is the moving speed of the target terminal and the avoidance direction that is the moving direction of the target terminal, which increases the possibility of approaching, is calculated, and the calculated avoidance information is used as the target terminal. The collision prevention method characterized by transmitting to. In the computer of the collision prevention device,
A first indicating that a walking smartphone is detected at the target terminal, and that the distance between the target terminal and the surrounding terminals is equal to or less than a first distance that is a distance that requires anti-collision control with respect to the target terminal. A condition determination process for determining whether or not one condition is satisfied;
When the first condition is satisfied, the target terminal and the surrounding terminal are at a predetermined time based on the first information including information on the movement of the target terminal and the second information including information on the movement of the surrounding terminal. If there is a possibility of collision or approaching in the event of a collision or approaching, based on the first information and the second information, the collision of the target terminal and the surrounding terminals at the time point or The avoidance information including the avoidance speed that is the moving speed of the target terminal and the avoidance direction that is the moving direction of the target terminal, which increases the possibility of approaching, is calculated, and the calculated avoidance information is used as the target terminal. Collision avoidance control processing to be transmitted to
A computer program for running.

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