Walking attention warning device, walking attention warning system and server

Abstract

To provide a walking alert device, a walking alert system, and a server that can effectively alert users to vehicles with the possibility of traveling on a road.SOLUTION: A walking alert device 30 can move with a user and performs an alert action when located on roads 22-1, 22-2, 22-3, 22-4, or 22-5 with specifications where specific conditions are met.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a walking attention drawing device, a walking attention drawing system, and a server. [Background technology]

[0002] Patent Document 1 listed below discloses a device that travels along the road with a child and executes a warning operation when a predetermined condition is met. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2019 / 240070 Summary of the Invention [Problem to be solved by the invention]

[0004] The above-mentioned Patent Document 1 leaves room for improvement in terms of effectively alerting the user to vehicles that may be traveling on the road.

[0005] In consideration of the above, the present invention aims to provide a pedestrian warning device, a pedestrian warning system, and a server that can effectively warn users of vehicles that may be traveling on the road. [Means for solving the problem]

[0006] The pedestrian attention warning device according to claim 1 is movable with the user, and when it is determined based on location information acquired by a GPS receiver mounted on the device that the device is located on a road with specifications that satisfy specific conditions, Indicates that the vehicle is located on a road that satisfies the specified conditions. A warning operation is executed, and when the width of the road satisfies a width condition, the specific condition is met, and when the width of the road is less than a predetermined first threshold and equal to or greater than a second threshold that is smaller than the first threshold, the width condition is met. The walking attention drawing device according to claim 2 is movable together with the user. A walking warning device that meets certain conditions. When the vehicle is located on a road with the specified specifications, it will be determined based on the location information acquired by its GPS receiver. Indicates that the vehicle is located on a road that satisfies the specified conditions. A warning operation is executed when the width of the road satisfies a width condition, when the specific condition is met and the width of the road is less than a predetermined first threshold, when the width condition is met, and when the pedestrian attention warning device moves on the road where the specific condition is met at a speed equal to or greater than a third threshold, or when the pedestrian attention warning device moves on the road where the specific condition is not met at a speed equal to or greater than a fourth threshold that is greater than the third threshold.

[0007] The road specifications in the claims and the specification include, for example, the width of the road, the structure of the road, and the presence or absence of certain structures. The "warning action" may be, for example, a warning action directed at the user.

[0008] The pedestrian warning device according to claim 1 can move with the user. Furthermore, when the pedestrian warning device is located on a road that satisfies a predetermined specific condition, the pedestrian warning device executes a warning operation. Therefore, the pedestrian warning device according to claim 1 can effectively warn the user of vehicles that may be traveling on the road.

[0010] Claims 1 and 2 The described pedestrian warning device can effectively warn a user about vehicles that may be traveling on the road.

[0011] The pedestrian warning device according to the invention described in claim 3 is the invention described in claim 1, in which the specific condition is met when the width of the road satisfies the width condition, there is no boundary between the roadway and the sidewalk on the side of the road, and there is no guardrail on the road.

[0012] The pedestrian warning device according to claim 3 can effectively warn the user about vehicles that may be traveling on the road.

[0013] The pedestrian warning device of the invention described in claim 4 is the invention of claim 3, in which the boundary is located between the roadway portion and the sidewalk, which is set at a higher position than the roadway portion.

[0014] The pedestrian warning device according to claim 4 can effectively warn the user about vehicles that may be traveling on the road.

[0016] Claims 1 and 2 In the invention described in (1), the width condition is satisfied when the width of the road is less than a predetermined first threshold value. Claims 1 and 2 The pedestrian attention-drawing device described in the above can effectively draw the attention of a user traveling on a road with a width less than the first threshold value.

[0018] Claim 1 In the invention described in (2), the width condition is not satisfied when the road width is less than the second threshold. Therefore, it is possible to prevent the pedestrian attention warning device from performing a warning operation when the user travels on a road with a width less than the second threshold. In other words, when the user is located on a road where there is a low possibility of vehicles traveling, the pedestrian attention warning device is less likely to perform a warning operation.

[0020] Claim 2 In the invention described in the above, when the pedestrian attention drawing device moves on a road where a specific condition is satisfied at a speed equal to or greater than a third threshold value that is smaller than a fourth threshold value, the pedestrian attention drawing device executes a warning operation. Claim 2 The walking warning device described in the above item can warn the user to move at a speed less than a third threshold when moving on a road where a specific condition is satisfied.

[0021] Claim 5The pedestrian warning system according to the invention described above comprises a server that wirelessly transmits specific road position information, which is position information of the road on which the specific condition is satisfied with respect to the specifications, to the pedestrian warning device described in claim 1 or claim 2, and the pedestrian warning device that executes the warning operation when it is determined that the pedestrian is located on the road on which the specific condition is satisfied based on the specific road position information and the position information of the pedestrian warning device.

[0022] Claim 6 The server according to the invention described above is capable of wirelessly transmitting specific road location information to the pedestrian warning device described in claim 1 or claim 2, which executes the warning operation when it is determined that the server is located on the road where the specific condition is satisfied, based on specific road location information, which is location information of the road where the specific condition is satisfied with respect to the specifications, and location information of the pedestrian warning device. [Effects of the Invention]

[0023] As described above, the pedestrian warning device, pedestrian warning system, and server according to the present invention have the excellent effect of effectively warning users of vehicles that may be traveling on the road. [Brief explanation of the drawings]

[0024] [Figure 1] 1 is a diagram showing the overall configuration of a walking attention drawing system including a walking attention drawing device and a management server according to a first embodiment. [Figure 2] 1 is a diagram showing a map including roads along which a user carrying a pedestrian attention drawing device is likely to walk; [Figure 3] FIG. 2 is a control block diagram of a management server, a walking warning device, and a mobile terminal. [Figure 4] FIG. 2 is a functional block diagram of a management server. [Figure 5] FIG. 10 is a diagram showing a road list. [Figure 6]FIG. 1 is a schematic block diagram of a walking attention calling device. [Figure 7] FIG. 2 is a functional block diagram of a walking attention calling device. [Figure 8] FIG. 2 is a functional block diagram of a mobile terminal. [Figure 9] 10 is a flowchart showing a process executed by the mobile terminal. [Figure 10] 10 is a flowchart showing a process executed by a management server. [Figure 11] 10 is a flowchart showing a process executed by a walking attention drawing device. [Figure 12] 10 is a flowchart showing a process executed by a walking attention calling device of a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0025] Hereinafter, a first embodiment of a walking attention calling device, a walking attention calling system, and a server according to the present invention will be described with reference to the drawings.

[0026] As shown in Figure 1, the first embodiment of the walking attention warning system 10 (hereinafter referred to as system 10) has a management server 20 (hereinafter referred to as server 20), a walking attention warning device 30 (hereinafter referred to as device 30), and a mobile terminal 40.

[0027] The server 20 is installed in a building (not shown) owned by the administrator of the system 10.

[0028] 3, the hardware configuration of server 20 includes a CPU (Central Processing Unit) (processor) 21A, a ROM (Read Only Memory) 21B, a RAM (Random Access Memory) 21C, a storage 21D, a wireless communication I / F (Interface) 21E, and an input / output I / F 21G. CPU 21A, ROM 21B, RAM 21C, storage 21D, wireless communication I / F 21E, and input / output I / F 21G are connected to each other via an internal bus 21Z so as to be able to communicate with each other. CPU 21A and each CPU described below can obtain information related to time from a timer.

[0029] The CPU 21A is a central processing unit that executes various programs and controls each part. The CPU 21A reads programs from the ROM 21B or the storage 21D and executes the programs using the RAM 21C as a work area. The CPU 21A controls each component and performs various arithmetic processing in accordance with the programs recorded in the ROM 21B or the storage 21D.

[0030] The ROM 21B stores various programs and various data. For example, a plurality of programs are installed in the ROM 21B. For example, the ROM 21B stores map data 22, a road list 25, and information related to user IDs, which will be described later. The RAM 21C temporarily stores programs or data as a working area. The storage 21D is configured by a storage device such as an HDD (Hard Disk Drive) or an SSD (Solid State Drive), and stores various programs and various data.

[0031] The map data 22 includes area information including the address of a user US (see FIG. 1) who is a member registered with the system 10. Although only one user US is depicted in FIG. 1, multiple members are registered with the system 10. Therefore, the map data 22 includes information on multiple areas. For example, the map data 22 includes information on the area shown in FIG. 2. In the following description, the map including the roads in FIG. 2 will be referred to as map data 22.

[0032] 2, the map data 22 includes images representing five roads extending linearly. That is, the map data 22 includes images representing a first road 22-1, a second road 22-2, a third road 22-3, a fourth road 22-4, and a fifth road 22-5.

[0033] The first road 22-1 includes a center line 22-1C. The first road 22-1 has lanes 22-1A and 22-1B. A vehicle 60 travels in lane 22-1A along arrow A1A, and a vehicle 61 travels in lane 22-1B along arrow A1B. The first road 22-1 has a width W1. The width W1 is equal to or greater than a predetermined first threshold value Th1. As will be described later, the width W1 and widths W2 to W5, which will be described later, are calculated by the road specification recognition unit 212 of the server 20.

[0034] The second road 22-2, the third road 22-3, and the fourth road 22-4 are perpendicular to the first road 22-1 and each have one end connected to the first road 22-1. A vehicle 62 travels on the second road 22-2 along the arrow A2, a vehicle 63 travels on the third road 22-3 along the arrow A3, and a vehicle 64 travels on the fourth road 22-4 along the arrow A4. That is, the second road 22-2, the third road 22-3, and the fourth road 22-4 are one-way roads. Furthermore, the widths of the second road 22-2, the third road 22-3, and the fourth road 22-4 are widths W2, W3, and W4, respectively. The widths W2, W3, and W4 are less than the first threshold value Th1 and greater than or equal to the second threshold value Th2. The second threshold value Th2 is smaller than the first threshold value Th1. Furthermore, when the widths W2, W3, and W4 are less than the first threshold value Th1 and greater than or equal to the second threshold value Th2, the width condition is met for the road widths.

[0035] The fifth road 22-5 is perpendicular to the second road 22-2 and the third road 22-3, and both ends of the fifth road 22-5 are connected to the second road 22-2 and the third road 22-3, respectively. The width of the fifth road 22-5 is W5. The width W5 is less than the second threshold value Th2. In other words, the width W5 is extremely narrow. Therefore, a vehicle cannot actually travel on the road 22-5 having the width W5. Note that the term "vehicle" as used herein includes, for example, a four-wheeled vehicle (automobile), a motorized two-wheeled vehicle, and a two-wheeled bicycle.

[0036] The wireless communication I / F 21E is an interface for wireless communication with various devices. For example, the wireless communication I / F 21E is capable of wireless communication with the device 30 and the mobile terminal 40 via a network (for example, the Internet).

[0037] The input / output I / F 21G is an interface for communicating with various devices.

[0038] 4 is a block diagram showing an example of the functional configuration of the server 20. The functional configuration of the server 20 includes a transmission / reception control unit 211, a road specification recognition unit 212, and a list management unit 213. These functions are realized by the CPU 21A reading and executing a program stored in the ROM 21B.

[0039] The transmission / reception control unit 211 controls the wireless communication I / F 21E. The wireless communication I / F 21E controlled by the transmission / reception control unit 211 can record data received from the outside in the ROM 21B and the storage 21D, and can wirelessly transmit data recorded in the ROM 21B and the storage 21D to the outside.

[0040] The road specification recognition unit 212 calculates the width of each road included in the map data 22. For example, the road specification recognition unit 212 calculates the width of each road based on the width of each road in the map data 22 and the scale of the map data 22. For example, if the width of one road in the map data 22 is 5 mm and the scale of the map data 22 is 1 / 1000, the actual width of this road calculated by the road specification recognition unit 212 is 5 m.

[0041] Furthermore, the road specification recognition unit 212 determines whether or not each road includes a sidewalk based on the data included in the map data 22. Note that a sidewalk in this specification refers to a sidewalk that has a boundary between it and the roadway portion. That is, a sidewalk in this specification includes a sidewalk that is set higher than the roadway portion and a sidewalk that is clearly separated from the adjacent roadway portion by a line (e.g., a white line) painted on the road. A sidewalk 22-3S is provided on the side of the third road 22-3. Therefore, the road specification recognition unit 212 determines that a sidewalk 22-3S is provided on the third road 22-3.

[0042] Furthermore, the road specification recognition unit 212 determines whether or not each road includes a guardrail based on the data included in the map data 22. A guardrail 22-4G is provided on the side of the fourth road 22-4. Therefore, the road specification recognition unit 212 determines that the fourth road 22-4 includes a guardrail 22-4G.

[0043] The list management unit 213 manages the road list 25 (see FIG. 5) recorded in the ROM 21B. The road list 25 includes a user ID, a road ID, specific conditions, and information indicating whether the road is a target road. A road ID is an ID that indicates each road. In the road list 25, the ID of the first road 22-1 is 22-1, the ID of the second road 22-2 is 22-2, the ID of the third road 22-3 is 22-3, the ID of the fourth road 22-4 is 22-4, and the ID of the fifth road 22-5 is 22-5. The road list 25 also includes the ID (22-6) of a road that is not shown in FIG. 2.

[0044] Furthermore, the list management unit 213 determines whether the specifications of each road satisfy the specific conditions. Here, the road specifications include the road width, the road structure, and the presence or absence of a specified structure. Furthermore, the road structure includes the presence or absence of a sidewalk, and the structure includes a guardrail. If the above width condition is met for the road width, the road does not have a sidewalk, and the road does not have a guardrail, the list management unit 213 determines that the specifications of this road satisfy the specific conditions. In the first embodiment, as shown in FIG. 5, the specifications of the second road 22-2 and the road with ID 22-6 satisfy the specific conditions.

[0045] Furthermore, when the list management unit 213 receives update information (described later) from the mobile terminal 40, the list management unit 213 sets roads that satisfy specific conditions as target roads that are subject to a warning or non-target roads that are not subject to a warning. In the first embodiment, the second road 22-2 is set as a target road, and the road with ID 22-6 is set as a non-target road.

[0046] Furthermore, the wireless communication I / F 21E controlled by the transmission / reception control unit 211 wirelessly transmits target road position information (specific road position information), which is the position information of the target road included in the latest road list 25, to the device 30 while linking it to the road ID every time a predetermined time has elapsed.

[0047] As shown in Fig. 1, device 30 is detachably attached to a school bag (randoseru) SB worn by a user US who is a child. User US may walk on various roads 22-1, 22-2, 22-3, 22-4, and 22-5 shown in Fig. 2. For example, user US walks on roads 22-1, 22-2, 22-3, and 22-5 when traveling between home and school.

[0048] 2, the device 30 has the same hardware configuration as the server 20. That is, the device 30 has, as its hardware configuration, a CPU 31A, a ROM 31B, a RAM 31C, a storage 31D, a wireless communication I / F 31E, an input / output I / F 31G, and an internal bus 31Z. For example, a plurality of programs are installed in the ROM 31B.

[0049] As shown in FIG. 6, the device 30 includes a GPS (Global Positioning System) receiver 32, a vibrator 33, and a speaker 34. The GPS receiver 32 receives GPS signals transmitted from GPS satellites to acquire information about the location of the device 30 (hereinafter referred to as "location information"). The vibrator 33 vibrates when a warning condition, which will be described later, is met. When the vibrator 33 vibrates, the vibration is transmitted to the body of the user US via a case (not shown) and the school bag SB that form the outer shape of the device 30, so that the user US can recognize that the device 30 is vibrating. The speaker 34 can output various sounds. The GPS receiver 32, the vibrator 33, and the speaker 34 can communicate with the input / output I / F 31G.

[0050] 7 is a block diagram showing an example of the functional configuration of device 30. As functional components, device 30 has a transmission / reception control unit 311, a warning condition determination unit 312, a vibrator control unit 313, and a speaker control unit 314. These functions are realized by CPU 31A reading and executing programs stored in ROM 31B.

[0051] The transmission / reception control unit 311 controls the wireless communication I / F 31E. The wireless communication I / F 31E controlled by the transmission / reception control unit 311 is capable of wireless communication with the server 20 and the mobile terminal 40 via the network.

[0052] The warning condition determination unit 312 calculates the distance D between the current position of the device 30 and the target road based on the position information received by the GPS receiver 32 and the target road position information received by the wireless communication I / F 31E from the server 20. For example, when the device 30 is located at position P1 in FIG. 2, the warning condition determination unit 312 calculates the actual distance D between positions P1 and P2 based on the target road position information of position P2 at one end of the second road 22-2, which is the target road, and the position information of position P1. In this case, D is not 0 (m). Also, for example, when the device 30 is located at position P3 in FIG. 2, the warning condition determination unit 312 recognizes that the device 30 is located on the second road 22-2. That is, the warning condition determination unit 312 determines that D is 0 (m).

[0053] Furthermore, when the distance D between the current position of the device 30 and the target road is 0, the warning condition determination unit 312 determines that the warning condition for the target road is met.

[0054] The vibrator control unit 313 vibrates the vibrator 33 when the warning condition is met, and does not vibrate the vibrator 33 when the warning condition is not met.

[0055] The speaker control unit 314 controls the speaker 34 .

[0056] 1, the mobile terminal 40 held by the parent (not shown) of the user US has a display 41. A touch panel is provided on the display 41. The mobile terminal 40 is, for example, a smartphone or a tablet computer.

[0057] 3, the mobile terminal 40 has the same hardware configuration as the server 20. That is, the mobile terminal 40 has, as its hardware configuration, a CPU 41A, a ROM 41B, a RAM 41C, a storage 41D, a wireless communication I / F 41E, an input / output I / F 41G, and an internal bus 41Z. For example, a pedestrian attention alert application is installed in the ROM 41B. The storage 41D stores map data 22 and a road list 25. Note that the road IDs and information related to specific conditions included in the road list 25 stored in the storage 41D match those in the road list 25 stored in the server 20.

[0058] 8 is a block diagram showing an example of the functional configuration of the mobile terminal 40. The mobile terminal 40 has a transmission / reception control unit 421, a display control unit 422, and an input control unit 423 as its functional configuration.

[0059] The transmission / reception control unit 421 controls the wireless communication I / F 41 E. The wireless communication I / F 41 E controlled by the transmission / reception control unit 421 is capable of wireless communication with the server 20 and the device 30 via the network.

[0060] The display control unit 422 controls the display 41. That is, the display control unit 422 causes, for example, information received by the wireless communication I / F 41E and information input via the touch panel to be displayed on the display 41. Furthermore, the display control unit 422 can cause the map data 22 and the road list 25 to be displayed on the display 41 when a walking attention alert application is running.

[0061] The input control unit 423 can update the road list 25 recorded in the storage 41D based on information input to the mobile terminal 40 via the touch panel. For example, when a parent of the user US, looking at the map data 22 and road list 25 displayed on the display 41, inputs information about a target road or a non-target road using the touch panel, the information about the target road or the non-target road in the road list 25 recorded in the storage 41D is updated by the input control unit 423. Furthermore, the wireless communication I / F 41E wirelessly transmits update information, which is the updated information about the target road or the non-target road, to the server 20.

[0062] Next, the operation and effect of the first embodiment will be explained using the flowcharts in Figures 9 to 11. In the following explanation, the processing of the flowcharts is executed by one CPU, but the processing of each flowchart may be executed by multiple CPUs. Note that before each of the following processes is executed, the contents of the road list 25 recorded in the server 20 and the mobile terminal 40 are identical to each other.

[0063] First, the processing performed by the CPU 41A of the mobile terminal 40 will be described using the flowchart of Fig. 9. The CPU 41A repeatedly executes the processing of the flowchart of Fig. 9 every time a predetermined time elapses.

[0064] First, in step S10 (hereinafter, the word "step" will be omitted), the CPU 41A determines whether or not update information regarding the road list 25 has been input using the display 41 (touch panel).

[0065] If the CPU 41A determines "Yes" in S10, the process proceeds to S11, where it updates the road list 25 recorded in the storage 41D and transmits the updated information to the server 20.

[0066] When the process of S11 is completed or when the determination in S10 is No, the CPU 41A temporarily ends the process of the flowchart of FIG.

[0067] Next, the processing performed by the CPU 21A of the server 20 will be described with reference to the flowchart of Fig. 10. The CPU 21A repeatedly executes the processing of the flowchart of Fig. 10 every time a predetermined time elapses.

[0068] First, in S20, the CPU 21A determines whether update information has been received from the mobile terminal 40.

[0069] If the CPU 21A determines "Yes" in S20, the CPU 21A proceeds to S21 and updates the road list 25 recorded in the ROM 21B.

[0070] When the determination in S20 is No or when the process of S21 is completed, the CPU 21A proceeds to S22 and wirelessly transmits the latest target road position information to the device 30 while linking it with the road ID.

[0071] When the process of S22 is completed or when the result of S20 is No, the CPU 21A temporarily ends the process of the flowchart of FIG.

[0072] Next, the processing performed by the CPU 31A of the device 30 will be described using the flowchart of Fig. 11. The CPU 31A repeatedly executes the processing of the flowchart of Fig. 11 every time a predetermined time elapses.

[0073] First, in S30, the CPU 31A determines whether or not the target road position information has been received from the server 20.

[0074] If the CPU 31A determines "Yes" in S30, it proceeds to S31, calculates the distance D from the current position of the device 30 to the target road, and determines whether the distance D is 0. That is, the CPU 31A determines whether the user US carrying the device 30 is on the target road.

[0075] If the CPU 31A determines "Yes" in S31, the process proceeds to S32, where it causes the vibrator 33 to execute a warning operation. That is, the CPU 31A causes the vibrator 33 to vibrate. As a result, the user US recognizes that the device 30 is vibrating. That is, the user US, who is walking on the second road 22-2, which is the target road, recognizes that he or she needs to pay attention to the vehicle 62 traveling on the second road 22-2.

[0076] When the process of S32 is completed or when the determinations in S30 and S31 are No, the CPU 31A temporarily ends the process of the flowchart of FIG.

[0077] As described above, in the first embodiment, the device 30 executes a warning operation when the user US is located on a target road with specifications that satisfy certain conditions. This warning operation is directed, for example, at the user US. That is, the device 30 executes the warning operation when the user US travels on a narrow road without a sidewalk or guardrail. The inventors' experiments revealed that the distance between the user US walking on a narrow road and a vehicle traveling on that road is likely to be shorter than the distance between the user US walking on a wide road and a vehicle traveling on that road. That is, it was revealed that the user US is required to pay more attention to vehicles when walking on a narrow road than when walking on a wide road. Furthermore, it is clear that the user US is required to pay more attention to vehicles when walking on a road without a sidewalk or guardrail than when walking on a road with a sidewalk or guardrail. The system 10 and device 30 of the first embodiment can effectively alert the user US to vehicles that may be traveling on such target roads.

[0078] Furthermore, in the first embodiment, the specific condition is not satisfied for roads whose width is less than the second threshold. Therefore, when the user US travels on the fifth road 22-5, the device 30 does not execute a warning operation. In other words, when the user US is located on a road where there is a low possibility of a vehicle traveling on it, the device 30 does not execute a warning operation. Therefore, the system 10 and the device 30 of the first embodiment are unlikely to annoy the user US.

[0079] Furthermore, in the first embodiment, the device 30 receives the latest target road position information from the server 20 every time a predetermined time period elapses. Therefore, the target road position information is not recorded in the ROM 31B and storage 31D of the device 30. Therefore, low-cost memories can be used as the ROM 31B and storage 31D of the device 30.

[0080] Next, a second embodiment of the present invention will be described with reference to Fig. 12. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted where appropriate.

[0081] In the second embodiment, it is possible to set a road that does not satisfy a specific condition as the target road. For example, the parent can set the first road 22-1 as the target road by operating the display (touch panel) 41.

[0082] Furthermore, the warning condition determination unit 312 of the device 30 of the second embodiment has the following function in addition to the above functions. That is, the warning condition determination unit 312 calculates the movement speed V of the device 30 moving on the target road based on the location information received by the GPS receiver 32 and the time information acquired from the timer, and compares this movement speed with a third threshold and a fourth threshold greater than the third threshold. Note that when the user US is running, the movement speed V is equal to or greater than the third threshold. Also, when the user US is running at a high speed, the movement speed V is equal to or greater than the fourth threshold. Typically, when the user US is running, the user US's attention to vehicles is lower than when the user US is walking. Furthermore, when the movement speed V is equal to or greater than the fourth threshold, the user US's attention to vehicles is lower than when the movement speed V is equal to or greater than the third threshold and less than the fourth threshold.

[0083] Next, the processing performed by the CPU 31A of the device 30 will be described using the flowchart of Fig. 12. The CPU 31A repeatedly executes the processing of the flowchart of Fig. 12 every time a predetermined time elapses.

[0084] First, the CPU 31A executes the process of S40, which is the same as S30 in FIG.

[0085] Next, the CPU 31A proceeds to S41 and determines whether the distance D to the target road for which the specific condition is satisfied is 0. If the determination is Yes, the CPU 31A proceeds to S42. On the other hand, for example, if the distance D to the target road for which the specific condition is satisfied is not 0, or if all roads for which the specific condition is satisfied are non-target roads, the CPU 31A determines No in S41.

[0086] In S42, the CPU 31A determines whether the travel speed V is equal to or greater than the third threshold value. That is, the CPU 31A determines whether the user US is traveling on a target road that satisfies a specific condition.

[0087] If the CPU 31A determines "Yes" in S42, the process proceeds to S43, where it causes the vibrator 33 to execute a warning operation. This allows the user US traveling on the target road to recognize that they need to pay attention to vehicles that may be traveling on this target road.

[0088] When the processing of S43 is completed or when the judgments in S41 and S42 are No, the CPU 31A proceeds to S44 to judge whether the distance D to the target road for which the specific condition is not satisfied is 0. If the judgment is Yes, the CPU 31A proceeds to S45. On the other hand, for example, if the distance D to the target road for which the specific condition is not satisfied is not 0, or if all roads for which the specific condition is not satisfied are non-target roads, the CPU 31A judges No in S44.

[0089] In S45, the CPU 31A determines whether the travel speed V is equal to or greater than the fourth threshold value. That is, the CPU 31A determines whether the user US is traveling at a high speed on a target road where the specific condition is not satisfied.

[0090] If the CPU 31A determines "Yes" in S45, the process proceeds to S46, where it causes the vibrator 33 to execute a warning operation. This allows the user US, who is traveling at high speed on the target road, to recognize that he or she needs to pay attention to vehicles that may be traveling on the target road.

[0091] When the process of S46 is completed or when the determinations in S40, S44, and S45 are No, the CPU 31A temporarily ends the process of the flowchart of FIG.

[0092] As described above, in the second embodiment, it is possible to effectively call the user US's attention to the vehicle, whose attention to the vehicle is reduced due to driving.

[0093] Furthermore, when the user US travels on a target road that satisfies a specific condition at a speed equal to or greater than a third threshold, the device 30 executes a warning operation. Therefore, the system 10 and the device 30 can alert the user US to travel at a speed less than the third threshold when traveling on a road whose width is less than the first threshold and greater than or equal to the second threshold.

[0094] Furthermore, when the user US moves at a speed equal to or greater than a fourth threshold on a target road where the specific condition is not satisfied, the device 30 executes a warning operation. That is, on a target road where the specific condition is not satisfied, the distance between the user US and the vehicle is unlikely to become short. However, when the user US's moving speed V is equal to or greater than the fourth threshold, the user US's attention to the vehicle may be significantly reduced. The system 10 and device 30 of this embodiment can alert the user US in such cases.

[0095] The system 10, the server 20, and the device 30 according to the embodiment have been described above, but the design of these can be modified as appropriate within the scope of the gist of the present invention.

[0096] For example, the processes of S31 and S41 may be performed for all roads for which the specific condition is satisfied. That is, information indicating whether a road is a target road or not may not be included in the road list 25. Similarly, the process of S44 may be performed for all roads for which the specific condition is not satisfied.

[0097] When the wireless communication I / F 31E receives the target road position information from the server 20, the received target road position information may be recorded in the ROM 31B or the storage 31D. In this case, the frequency with which the device 30 receives the target road position information from the server 20 may be lower than the reception frequency in the first and second embodiments. Also, the wireless communication I / F 31E may receive the latest road list 25 from the server 20, and the received road list 25 may be recorded in the ROM 31B or the storage 31D.

[0098] It may be determined that the device 30 (user US) is located on a predetermined road when the distance D is equal to or less than a predetermined distance L. The predetermined distance L is, for example, 1 m.

[0099] The requirements for the specific condition to be met may be different from those described above. For example, the specific condition may be met when the width condition is met regarding the width of the road, when the road does not have a sidewalk, or when the road does not have a guardrail. Furthermore, the width condition regarding the width of the road may be met when the width of the road is less than the first threshold value Th1.

[0100] If the map data 22 includes data relating to the width of the roads, the road specification recognition unit 212 may acquire information relating to the width of each road.

[0101] Images including the roads captured by cameras mounted on vehicles traveling on each road may be transmitted from the wireless communication device of each vehicle to server 20, and CPU 21A of server 20 may calculate the width of each road based on these images.

[0102] The width of a road without a center line is small, so a road without a center line may be determined to satisfy the width condition based on information contained in the map data 22 or an image including the road captured by a vehicle camera.

[0103] The system 10 does not need to include the server 20. In this case, the road list 25 is recorded in the ROM 31B or storage 31D of the device 30.

[0104] When it is determined based on the position information of device 30 that user US is located at position P4 on sidewalk 22-3S (see Figure 2), S31 and 41 may not be judged as Yes, and when it is determined based on the position information of device 30 that user US is located at position P5 on roadway portion 22-3C, S31 and 41 may be judged as Yes.

[0105] When it is determined based on the position information of device 30 that user US is located at position P6 (see Figure 2) on the opposite side of the roadway from guardrail 22-4G, S31 and 41 may not be judged as Yes, and when it is determined based on the position information of device 30 that user US is located at position P7 on the roadway adjacent to guardrail 22-4G, S31 and 41 may be judged as Yes.

[0106] The wireless communication I / F 31E of the device 30 may wirelessly transmit the location information of the device 30 to the mobile terminal 40. In this way, the parent can recognize the current location of the user US by looking at the display 41 of the mobile terminal 40.

[0107] When it is determined that the warning condition is met, the CPU 31A (speaker control unit 314) may control the speaker 34 so that the speaker 34 outputs a sound that calls the attention of the user US.

[0108] The device 30 may be attached to something other than the school bag SB. For example, the device 30 may be attached to a hat worn on the head of the user US or to clothing worn by the user US.

[0109] A mobile terminal may be used as the device 30. The mobile terminal may include, for example, a smartphone. [Explanation of symbols]

[0110] 10. Pedestrian Warning System (System) 20 Management Server (Server) 22-1 First Road (Road) 22-2 Second Road (Road) 22-3 Third Road (Road) 22-3S Sidewalk 22-4 4th Road (Road) 22-4G Guardrail 22-5 5th Road (Road) 30 Walking warning device (device) US users W1 W2 W3 W4 W5 Road width

Claims

1. the vehicle is movable together with the user, and when the vehicle is located on a road with specifications that satisfy a specific condition, executes a warning operation indicating that the vehicle is located on a road with specifications that satisfy the specific condition, when determined based on location information acquired by a GPS receiver mounted on the vehicle; When the width of the road satisfies the width condition, the specific condition is satisfied; A pedestrian attention warning device in which the width condition is satisfied when the width of the road is less than a predetermined first threshold and equal to or greater than a second threshold that is smaller than the first threshold.

2. A walking attention alert device that can be moved with a user, When the vehicle is located on a road with specifications that satisfy a specific condition, the vehicle executes a warning operation indicating that the vehicle is located on a road with specifications that satisfy the specific condition, when the vehicle is determined based on location information acquired by a GPS receiver mounted on the vehicle; When the width of the road satisfies the width condition, the specific condition is satisfied; The width condition is satisfied when the width of the road is less than a predetermined first threshold value; The pedestrian attention warning device executes the warning operation when the pedestrian attention warning device moves on the road where the specific condition is satisfied at a speed equal to or greater than a third threshold, or when the pedestrian attention warning device moves on the road where the specific condition is not satisfied at a speed equal to or greater than a fourth threshold that is greater than the third threshold.

3. 2. The pedestrian attention warning device according to claim 1, wherein the specific condition is met when the width of the road satisfies the width condition, there is no boundary between the roadway and the sidewalk on the side of the road, and there is no guardrail on the road.

4. The pedestrian attention-attracting device according to claim 3 , wherein the boundary is provided between the roadway portion and the sidewalk, which is set at a higher position than the roadway portion.

5. a server that wirelessly transmits specific road position information, which is position information of the road on which the specific condition regarding the specification is satisfied, to the pedestrian attention-attracting device according to claim 1 or 2; the pedestrian attention drawing device that executes the warning operation when it is determined that the pedestrian attention drawing device is located on the road where the specific condition is satisfied, based on the specific road position information and the position information of the pedestrian attention drawing device; A pedestrian warning system equipped with

6. A server capable of wirelessly transmitting specific road location information to the pedestrian warning device described in claim 1 or claim 2, which executes the warning operation when it is determined that the pedestrian is located on a road where the specific condition is satisfied, based on specific road location information, which is location information of the road where the specific condition is satisfied with respect to the specifications, and the location information of the pedestrian warning device.

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