Navigation controller and navigation method

Abstract

To provide information having higher accuracy related to a location where a small-sized mobility can avoid rain during rainfall.SOLUTION: A control unit 20 which is a navigation controller comprises: a location information acquisition unit 21 which acquires location information indicating a present location of a micro mobility; a sensor data acquisition unit 23 which acquires sensor data from a sensor 13 which is disposed in the micro mobility and can detect whether or not a road surface is wet; a weather information acquisition unit 24 which acquires weather information; a determination unit 27 which determines that it is a section which does not get wet in rain or a spot for sheltering from the rain, when the weather information indicates rainfall and the sensor data indicates that the road surface is not wet, on the basis of acquired weather information and acquired sensor data; and a map information update unit 31 which adds a determined section which does not get wet in the rain or rain shelter information indicating the spot for sheltering from the rain, to map information stored in a map information storage unit 15.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a navigation control device and a navigation method. [Background technology]

[0002] There is known a technology for acquiring weather information and rainfall avoidance information for a user's movement range and generating avoidance execution information for allowing the user to avoid getting into a vehicle under rainy conditions (see, for example, Patent Document 1). In addition, the technology described in Patent Document 1 generates rain shelter information for the user to take shelter from the rain based on information on the user's current position and information on a generated rain shelter map. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-144035 A Summary of the Invention [Problem to be solved by the invention]

[0004] When it rains, places without a roof are not suitable for micro (small) mobility vehicles to travel. However, in places with something to block the rain, such as a roof, micro (small) mobility vehicles can travel even when it is raining. However, with map information showing normal road maps, it is difficult to accurately determine whether micro (small) mobility vehicles can travel when it is raining. There is room for improvement in providing highly accurate information on places where micro (small) mobility vehicles can avoid the rain when it is raining.

[0005] The present disclosure has been made in consideration of the above, and aims to provide highly accurate information regarding locations where micromobility can avoid rain during rainfall. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems and achieve the objective, the navigation control device of the present disclosure comprises a location information acquisition unit that acquires location information indicating the current location of the micromobility, a sensor data acquisition unit that acquires sensor data from a sensor placed on the micromobility that can detect whether the road surface is wet or not, a weather information acquisition unit that acquires weather information based on the location information acquired by the location information acquisition unit, a determination unit that determines, based on the weather information acquired by the weather information acquisition unit and the sensor data acquired by the sensor data acquisition unit, if the weather information indicates rainfall and the sensor data indicates that the road surface is not wet, that it is a section that will not get wet from the rain or a shelter spot, and a map information update unit that adds rain shelter information indicating the section that will not get wet from the rain or the shelter spot determined by the determination unit to map information stored in a map information storage unit.

[0007] In order to solve the above-mentioned problems and achieve the objective, the navigation method of the present disclosure includes a location information acquisition step of acquiring location information indicating a current location of the micromobility, a sensor data acquisition step of acquiring sensor data from a sensor disposed on the micromobility that can detect whether the road surface is wet or not, a weather information acquisition step of acquiring weather information based on the location information acquired by the location information acquisition step, a determination step of determining, based on the weather information acquired by the weather information acquisition step and the sensor data acquired by the sensor data acquisition step, if the weather information indicates rainfall and the sensor data indicates that the road surface is not wet, that the location is a section that will not get wet from the rain or a shelter spot, and a map information update step of adding rain shelter information indicating the section that will not get wet from the rain or the shelter spot determined by the determination step to map information stored in a map information storage unit. Effect of the Invention

[0008] The present disclosure has the advantage of being able to provide highly accurate information regarding locations where micromobility can avoid rain when it rains. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a block diagram showing an example of the configuration of a navigation device according to the first embodiment. [Diagram 2] FIG. 2 is a flowchart showing an example of a map information update process in the navigation device according to the first embodiment. [Diagram 3] FIG. 3 is a flowchart showing an example of a search process during rainfall in the navigation device according to the first embodiment. [Figure 4] FIG. 4 is a block diagram showing an example of the configuration of a navigation device according to the second embodiment. [Diagram 5] FIG. 5 is a flowchart showing an example of a search process during rainfall in the navigation device according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a navigation control device and a navigation method according to embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Note that the present invention is not limited to the following embodiments.

[0011] [First embodiment] <Navigation device> Fig. 1 is a block diagram showing an example of the configuration of a navigation device according to a first embodiment. The navigation device 10 searches for and provides guidance on a micromobility route. The navigation device 10 adds rain shelter information indicating a section where the user will not get wet during rainfall (in other words, a section where the user can travel without getting wet during rainfall) or a shelter spot to the map information stored in the map information storage unit 15. The navigation device 10 searches for and notifies the user of a section where the user will not get wet during rainfall or a shelter spot.

[0012] Micromobility is, for example, micro (small) mobility such as a kick scooter and a bicycle. Micromobility may be either motorized or non-motorized. Micromobility is mobility that does not have a roof to cover the riding user. Micromobility is a form of mobility in which the riding user gets wet during rain. Micromobility can travel on roadways and sidewalks.

[0013] <Navigation device> 1 is a block diagram showing an example of the configuration of a navigation device according to an embodiment. The navigation device 10 is a fixed electronic device arranged in a micromobility, or a portable electronic device such as a portable electronic device carried by a user. The navigation device 10 includes a GNSS (Global Navigation Satellite System) receiving unit 11, an operation unit 12, a sensor 13, a map information storage unit 15, a notification unit 18, a communication unit 19, and a navigation control device (hereinafter referred to as a "control unit") 20.

[0014] The GNSS receiving unit 11 is configured with a GNSS receiver that receives GNSS signals from GNSS satellites, etc. The GNSS receiving unit 11 outputs the received GNSS signals to the position information acquisition unit 21.

[0015] The operation unit 12 can accept various operations for the navigation device 10. For example, the operation unit 12 is configured by a physical operation means for the navigation device 10, or a touch panel arranged on the display unit. For example, the operation unit 12 can accept an operation to input a destination. For example, the operation unit 12 can accept an operation to search for a route from a departure point to a destination. For example, the operation unit 12 can accept an operation to start route guidance from a departure point to a destination. The operation unit 12 outputs operation information indicating the accepted operation to the operation acceptance unit 22.

[0016] The sensor 13 is a sensor capable of detecting whether the road surface on which the micromobility is traveling is wet or not. The sensor 13 is, for example, a LiDAR (Light Detecting and Ranging), a millimeter wave radar, an infrared sensor, or the like. The sensor 13, for example, irradiates the road surface with laser light and receives the light reflected from the road surface. The sensor 13 is disposed in the micromobility. The sensor 13 outputs sensor data to the sensor data acquisition unit 23.

[0017] For example, when the micromobility is a kickboard, the sensor 13 may be disposed under a step that serves as a footrest. For example, when the micromobility is a bicycle, the sensor 13 may be disposed under the body of the bicycle.

[0018] The map information storage unit 15 stores map information indicating a road map including roads and intersections. The map information storage unit 15 outputs the stored map information to the map information acquisition unit 32. The map information storage unit 15 may be a storage device such as an external server that acquires map information via a communication function of the communication unit 19 or the like.

[0019] The map information includes sections where you will not get wet during rainfall, or information on shelters that indicate places to take shelter from the rain.

[0020] The notification unit 18 notifies the user of the micromobility route. The notification unit 18 includes at least one of a display unit and an audio output unit. The notification unit 18 controls the notification based on a control signal from a notification control unit 38.

[0021] The function of the notification unit 18 as a display unit will be described. The notification unit 18 is, for example, a display device specific to the navigation device 10, or a display device shared with another system. When the notification unit 18 is a display unit, it displays an image showing the route based on a video signal output from a notification control unit 38.

[0022] The function of the notification unit 18 as an audio output unit will be described. The notification unit 18 is, for example, an audio output unit specific to the navigation device 10, or an audio output unit shared with another system. When the notification unit 18 is an audio output unit, it outputs a sound from the audio output unit based on an audio signal output from a notification control unit 38.

[0023] The communication unit 19 is a communication unit that performs wide-area wireless communication. The communication unit 19 communicates information with an external device, for example, via a network. The network is, for example, the Internet, but is not limited to this. The communication unit 19 is, for example, configured with a wide-area wireless communication module for a mobile phone network. The communication unit 19 is configured with a communication module such as Wi-Fi (registered trademark), and may realize wide-area wireless communication by connecting to any access point or another smartphone.

[0024] <Navigation control device> The control unit 20 is an arithmetic processing device constituted by, for example, a CPU (Central Processing Unit) and the like. The control unit 20 executes instructions included in a program stored in a storage unit (not shown). The control unit 20 includes a position information acquisition unit 21, an operation reception unit 22, a sensor data acquisition unit 23, a weather information acquisition unit 24, a movement information acquisition unit 25, a road surface recognition unit 26, a determination unit 27, a map information update unit 31, a map information acquisition unit 32, a route search unit 34, a route guidance unit 35, a rainfall search unit 36, a notification control unit 28, and a communication control unit 39.

[0025] The location information acquisition unit 21 acquires location information indicating the current location of the micromobility. In this embodiment, the location information acquisition unit 21 acquires the location information of the micromobility based on the radio wave signal acquired by the GNSS receiving unit 11.

[0026] The operation reception unit 22 acquires operation information of the operation accepted by the operation unit 12. For example, the operation reception unit 22 acquires operation information indicating a destination setting operation and outputs a control signal. For example, when a destination is set, the operation reception unit 22 outputs a control signal including the current position of the micromobility and position information of the destination. For example, the operation reception unit 22 acquires operation information indicating an operation to search for a route from the current position of the micromobility to the destination and outputs a control signal. For example, the operation reception unit 22 acquires operation information indicating an operation to start route guidance and outputs a control signal.

[0027] The sensor data acquisition unit 23 acquires sensor data from the sensor 13. The sensor data acquisition unit 23 may acquire the sensor data in association with time or location information indicating the current location of the micromobility.

[0028] The weather information acquisition unit 24 acquires weather information indicating rainfall corresponding to location information indicating the current location of the micromobility. The weather information acquisition unit 24 acquires weather information from an external system or the like via the communication unit 19, for example.

[0029] The movement information acquisition unit 25 acquires movement information of micromobility.

[0030] The movement information includes information indicating a travel speed of the micromobility. The movement information may include information indicating a travel lane position and a travel direction.

[0031] The road surface recognition unit 26 recognizes whether the road surface is wet or not from the sensor data acquired by the sensor data acquisition unit 23.

[0032] The road surface recognition unit 26 uses the reflectance of the road surface when the road surface is not wet as a reference value, and recognizes that the road surface is wet if the reflectance indicated by the sensor data is higher than the reference value. The road surface recognition unit 26 recognizes that the road surface is not wet and is dry if the reflectance indicated by the sensor data is equal to or lower than the reference value. Alternatively, the road surface recognition unit 26 may recognize that the road surface is slightly wet but dry if the reflectance indicated by the sensor data is equal to or lower than the reference value.

[0033] The determination unit 27 determines whether or not rain is not detected in the sensor data during rainfall. When the weather information acquired by the weather information acquisition unit 24 indicates rainfall, if rain is not detected in the sensor data, the location corresponding to the sensor data is a section where you will not get wet in the rain or a shelter spot.

[0034] For example, sidewalks or roads under overpasses, underpasses, areas under elevated roads or railway tracks, covered shopping streets (arcades), multi-story parking garages that micromobility can enter, under pedestrian bridges, tunnels, covered bus stops, temple and shrine gates, and covered gas stations are determined to be sections that will not get wet in the rain or places to take shelter from the rain.

[0035] In this embodiment, the determination unit 27 determines that the location is a section that will not get wet from the rain or a shelter spot when the weather information indicates rainfall and the sensor data indicates that the road surface is not wet, based on the weather information acquired by the weather information acquisition unit 24 and the sensor data acquired by the sensor data acquisition unit 23. More specifically, the determination unit 27 determines that the location is a section that will not get wet from the rain or a shelter spot when the weather information indicates rainfall and the sensor data indicates that the road surface is not wet, based on the weather information and the recognition result of the road surface recognition unit 26.

[0036] When the weather information indicates rainfall, the continuously acquired sensor data indicates that the road surface is not wet, and the position information corresponding to the sensor data indicates a continuous section on the map, the determination unit 27 may determine that the section is a section that will not get wet from the rain.When the weather information indicates rainfall, the continuously acquired sensor data indicates that the road surface is not wet, and the position information corresponding to the sensor data indicates one point on the map, the determination unit 27 may determine that the point is a shelter point.

[0037] The determination unit 27 may distinguish between a section that will not get wet from rain and a shelter point based on the movement information acquired by the movement information acquisition unit 25, in addition to the recognition result and weather information of the road surface recognition unit 26. Specifically, when the weather information indicates rainfall, the sensor data indicates that the road surface is not wet, and indicates that the micromobility is moving, the determination unit 27 may determine that the section corresponding to the movement is a section that will not get wet from rain, and when the weather information indicates that the micromobility is stopped, the determination unit 27 may determine that the stopping point is a shelter point.

[0038] The map information update unit 31 adds the rain shelter information indicating the section that will not get wet in the rain or the shelter spot determined by the determination unit 27 to the map information stored in the map information storage unit 15.

[0039] The map information acquisition unit 32 acquires map information from the map information storage unit 15 .

[0040] The route search unit 34 searches for a route for the micromobility to the set destination. In this embodiment, the starting point is, for example, the current location of the micromobility. More specifically, the route search unit 34 searches for a route based on the location information of the current location of the micromobility and the destination, and the map information stored in the map information storage unit 15. The method for searching for a route is not limited and any known route search method can be used.

[0041] The route guidance unit 35 provides guidance along a route to a destination. The method of providing route guidance is not limited and any known route guidance method can be used.

[0042] When the weather information acquired by the weather information acquisition unit 24 indicates that there is a possibility of rainfall in the vicinity of the current location of the micromobility, the rainfall search unit 36 ​​searches for sections or shelter spots that will not get wet in the rain in the vicinity of the current location of the micromobility from the map information stored in the map information storage unit 15.

[0043] When route guidance is being performed by the route guidance unit 35, the rainfall search unit 36 ​​may search for a section or a shelter spot that will not get wet in the rain and that is a small deviation from the route, in the vicinity of the current position of the micromobility.

[0044] The notification control unit 38 controls to notify route guidance along the route.

[0045] In this embodiment, when the weather information acquired by the weather information acquisition unit 24 indicates that there is a possibility of rainfall in the vicinity of the current location of the micromobility, the notification control unit 38 controls the notification to notify of the possibility of rainfall and of a section or shelter spot that will not get wet in the rain searched for by the rainfall search unit 36.

[0046] In this embodiment, the notification control unit 38 may notify the searched sections where you won't get wet in the rain or the places to take shelter from the rain in the form of a list arranged in order of proximity to the current position of the micromobility.

[0047] A case will be described where the notification unit 18 is a display unit. The notification control unit 38 outputs a video signal that causes the display unit, which is the notification unit 18, to display an image of route guidance along the route.

[0048] A case will be described where the notification unit 18 is an audio output unit. The notification control unit 38 outputs an audio signal to output audio of route guidance along the route from the audio output unit, which is the notification unit 18.

[0049] The communication control unit 39 controls the communication via the communication unit 19 .

[0050] <Information processing in navigation devices> Next, information processing in the navigation device 10 will be described with reference to Fig. 2. Fig. 2 is a flowchart showing an example of map information update processing in the navigation device according to the first embodiment. For example, before starting travel by micromobility, the navigation device 10 is started. While the navigation device 10 is started, the sensor 13 constantly detects the state of the road surface. In addition, the weather information acquisition unit 24 constantly acquires weather information.

[0051] The control unit 20 judges whether rain is not detected by the sensor 13 during rainfall (step S101). More specifically, the control unit 20 recognizes whether the road surface is wet or not from the sensor data acquired by the sensor data acquisition unit 23 using the road surface recognition unit 26. The control unit 20 judges that rain is not detected using the judgment unit 27 based on the sensor data acquired by the sensor data acquisition unit 23 and the weather information acquired by the weather information acquisition unit 24 when the weather information indicates rainfall and the sensor data indicates that the road surface is not wet. When the control unit 20 judges that rain is not detected by the sensor 13 during rainfall (Yes in step S101), the control unit 20 proceeds to step S102. When the control unit 20 does not judge that rain is not detected by the sensor 13 during rainfall (No in step S101), the control unit 20 proceeds to step S105.

[0052] When it is determined that rain is not detected by the sensor 13 during rainfall (Yes in step S101), the control unit 20 determines whether or not the micromobility is moving (step S102). More specifically, the control unit 20 determines whether or not the micromobility is moving based on the movement information acquired by the movement information acquisition unit 25. When the control unit 20 determines that the micromobility is moving (Yes in step S102), it proceeds to step S103. When the control unit 20 does not determine that the micromobility is moving (No in step S102), it proceeds to step S104.

[0053] When it is determined that the micromobility is moving (Yes in step S102), the control unit 20 registers the section as one that will not get wet in the rain (step S103). More specifically, the control unit 20 registers the section that will not get wet in the rain as rain shelter information in the map information stored in the map information storage unit 15 by the map information update unit 31. The control unit 20 proceeds to step S105.

[0054] When it is not determined that the micromobility is moving (No in step S102), the control unit 20 registers the location as a shelter spot (step S104). More specifically, the control unit 20 registers the shelter spot as shelter information in the map information stored in the map information storage unit 15 by the map information update unit 31. The control unit 20 proceeds to step S105.

[0055] The control unit 20 determines whether or not to end the process of this flowchart (step S105). The control unit 20 determines to end the process of this flowchart when, for example, an operation to end the map information update process is accepted, the navigation device 10 is turned off, etc. When the control unit 20 determines to end the process of this flowchart (Yes in step S105), it ends the process of this flowchart. When the control unit 20 does not determine to end the process of this flowchart (No in step S105), it executes the process of step S101 again.

[0056] In this manner, the rain shelter information is registered in the map information in the map information storage unit 15.

[0057] Next, information processing in the navigation device 10 will be described with reference to Fig. 3. Fig. 3 is a flowchart showing an example of search processing during rainfall in the navigation device according to the first embodiment.

[0058] The control unit 20 determines whether or not there is a possibility of rainfall (step S111). More specifically, the control unit 20 determines whether or not there is a possibility of rainfall in the vicinity of the current location of the micromobility, for example, within a range that can be traveled within 10 minutes, based on the weather information acquired by the weather information acquisition unit 24. If the control unit 20 determines that there is a possibility of rainfall (Yes in step S111), it proceeds to step S112. If the control unit 20 does not determine that there is a possibility of rainfall (No in step S111), it proceeds to step S114.

[0059] When it is determined that there is a possibility of rain (Yes in step S111), the control unit 20 searches for a section where the user will not get wet from the rain or a place to take shelter from the rain (step S112). More specifically, when the weather information acquired by the weather information acquisition unit 24 indicates that there is a possibility of rain in the vicinity of the current position of the micromobility, the control unit 20 causes the rainfall search unit 36 ​​to search for a section where the user will not get wet from the rain or a place to take shelter from the rain in the vicinity of the current position of the micromobility from the map information stored in the map information storage unit 15. The control unit 20 proceeds to step S113.

[0060] The control unit 20 notifies the search result (step S113). More specifically, the control unit 20 controls the notification control unit 38 to notify the possibility of rain and the sections that will not get wet in the rain or the shelter points that have been searched for by the rainfall search unit 36. The control unit 20 proceeds to step S114.

[0061] The control unit 20 determines whether or not to end the processing of this flowchart (step S114). The control unit 20 determines to end the processing of this flowchart when, for example, an operation to end the search processing during rainfall is accepted, the navigation device 10 is turned off, etc. When the control unit 20 determines to end the processing of this flowchart (Yes in step S114), it ends the processing of this flowchart. When the control unit 20 does not determine to end the processing of this flowchart (No in step S114), it executes the processing of step S111 again.

[0062] In this way, the user is notified of the possibility of rain and the sections where the user will not get wet or the shelter spots searched for by the rainfall search unit 36. The user can select one candidate from the notified sections where the user will not get wet or the shelter spots and move to the selected shelter spot.

[0063] <Effects> As described above, in this embodiment, when the weather information indicates rainfall and the sensor data indicates that the road surface is not wet, it is determined that the section is not wet from the rain or that the shelter point is a place where the road will not get wet. In this embodiment, the shelter information indicating the determined section is not wet from the rain or that the shelter point is a place where the road will not get wet from the rain can be added to the map information stored in the map information storage unit 15. According to this embodiment, it is possible to provide highly accurate information regarding places where micromobility can avoid the rain when it is raining.

[0064] In this embodiment, when it is indicated that there is a possibility of rainfall in the vicinity of the current location of the micromobility, the possibility of rainfall and the searched sections or places to take shelter from the rain can be notified. According to this embodiment, the user can select one candidate from the notified sections or places to take shelter from the rain and move to the selected place to take shelter from the rain.

[0065] [Second embodiment] A navigation device 10A according to the second embodiment will be described with reference to Figs. 4 and 5. Fig. 4 is a block diagram showing an example of the configuration of the navigation device according to the second embodiment. Fig. 5 is a flowchart showing an example of search processing during rainfall in the navigation device according to the second embodiment. In the following description, components similar to those in the navigation device 10 are given the same or corresponding reference symbols, and detailed description thereof will be omitted. This also applies to the following embodiments. The navigation device 10A differs from the first embodiment in that it includes a congestion degree acquisition unit 28A and in the processing of a notification control unit 38A.

[0066] The congestion degree acquisition unit 28A acquires the congestion degree of other micromobilities in the vicinity of the searched section that is not wet by rain or the rain shelter point. The congestion degree acquisition unit 28A acquires the congestion degree from an external system or the like via the communication unit 19, for example.

[0067] The degree of congestion of other micromobilities in the vicinity may be obtained by any known method, and is not limited thereto.

[0068] The notification control unit 38A performs control so as to notify the congestion degree acquired by the congestion degree acquisition unit 28A together with the searched sections where one will not get wet in the rain or shelter points.

[0069] In this embodiment, the notification control unit 38A may perform control to give priority to notifying sections or sheltering spots that are less crowded and will not get wet in the rain. The notification control unit 38 may notify the searched sections or sheltering spots that will not get wet in the rain in a list format in which the sections or sheltering spots are arranged in ascending order of congestion.

[0070] Next, the search process during rain in the navigation device 10 will be described with reference to Fig. 5. The processes in steps S121, S122, and S125 are similar to those in steps S111, S112, and S114 in the flowchart shown in Fig. 3.

[0071] The control unit 20A acquires the congestion degree of the section where the vehicle will not get wet in the rain or the sheltering point (step S123). More specifically, the control unit 20A acquires the congestion degree of other micromobilities around the searched section where the vehicle will not get wet in the rain or the sheltering point by the congestion degree acquisition unit 28A. The control unit 20A proceeds to step S124.

[0072] The control unit 20A notifies the search result by giving priority to the one with the lowest degree of congestion (step S124). More specifically, the control unit 20A controls the notification control unit 38A to notify the possibility of rain and the searched sections or shelter points that will not get wet in the rain in order of the lowest degree of congestion. The control unit 20A proceeds to step S125.

[0073] <Effects> As described above, in this embodiment, the congestion degree can be reported together with the searched section where you will not get wet from the rain or the shelter spot. According to this embodiment, it is possible to appropriately select a section where you will not get wet from the rain or the shelter spot by checking the congestion degree.

[0074] In this embodiment, sections or sheltering spots where the degree of congestion is low and you will not get wet in the rain can be given priority in notification.

[0075] Each component of the illustrated navigation device is a functional concept, and does not necessarily have to be physically configured as illustrated. In other words, the specific form of each device is not limited to that shown in the figure, and all or part of the device may be functionally or physically distributed or integrated in any unit depending on the processing load and usage status of each device.

[0076] The configuration of the navigation device is realized, for example, as software, by a program loaded into a memory. In the above embodiment, the configuration has been described as functional blocks realized by the cooperation of these hardware and software. In other words, these functional blocks can be realized in various forms, by hardware alone, software alone, or a combination of both.

[0077] The components described above include those that a person skilled in the art can easily imagine and those that are substantially the same. Furthermore, the configurations described above can be appropriately combined. Furthermore, various omissions, substitutions, or modifications of the configurations are possible without departing from the scope of the present invention.

[0078] In the above, the sensor 13 has been described as being a LiDAR or the like, but is not limited thereto. The sensor 13 may be, for example, a camera that captures the road surface. In this case, it is recognized whether the road surface is wet or dry from the image captured by the camera. It may also be recognized whether it is raining or not from the presence or absence of raindrops in the captured image.

[0079] The rain shelter information may be linked to weather information including the amount of precipitation. This makes it possible to distinguish, for example, rain shelter information for light rain only from rain shelter information for heavy rain. When the rainfall search unit 36 ​​searches, it can search for rain shelter information that matches the rainfall conditions at that time.

[0080] In the above description, the navigation device 10 arranged in the micromobility performs the processing, but the present invention is not limited to this. For example, the map information storage unit 15 may be provided in a server device (not shown). In this case, the navigation device 10 arranged in each micromobility generates rain shelter information and transmits it to the server device. The server device collects the rain shelter information acquired from the multiple navigation devices 10 and manages it as a map information storage unit. The server device transmits updated map information including the rain shelter information stored in the map information storage unit to each navigation device 10. Alternatively, the server device may be provided with functions corresponding to the route search unit 34 and the rainfall search unit 36 ​​in addition to the map information storage unit 15. In this case, the navigation device 10 requests a route search from the server device and receives the search result. [Explanation of symbols]

[0081] 10 Navigation devices 11 GNSS receiver 12 Control section 13 Sensors 15 Map information storage unit 18. Notification Department 19 Communications Department 20 Control unit (navigation control device) 21 Location information acquisition section 22 Operation reception section 23 Sensor data acquisition unit 24 Weather information acquisition department 25 Movement information acquisition section 26 Road surface recognition section 27 Judgment section 31 Map Information Update Division 32 Map information acquisition section 34 Route Search Unit 35 Route Guidance Department 36 Rain search section 38 Notification control section 39 Communication control section

Claims

1. A location information acquisition unit that acquires location information indicating a current location of the micromobility; a sensor data acquisition unit that acquires sensor data from a sensor that is disposed in the micromobility and can detect whether a road surface is wet; a weather information acquisition unit that acquires weather information based on the location information acquired by the location information acquisition unit; a determination unit that determines, based on the weather information acquired by the weather information acquisition unit and the sensor data acquired by the sensor data acquisition unit, that the section is a section that will not get wet in the rain or a shelter point when the weather information indicates rainfall and the sensor data indicates that the road surface is not wet; a map information update unit that adds rain shelter information indicating the section that will not get wet in the rain or the shelter point determined by the determination unit to the map information stored in the map information storage unit; A navigation control device comprising:

2. a rainfall search unit that searches for a section or a shelter from the rain in the vicinity of the current location of the micromobility when the weather information acquired by the weather information acquisition unit indicates a possibility of rainfall in the vicinity of the current location of the micromobility; Equipped with a notification control unit that, when the weather information acquired by the weather information acquisition unit indicates that there is a possibility of rainfall in the vicinity of a current location of the micromobility, controls to notify the user of the possibility of rainfall and a section or a shelter spot that will not get wet in the rain that has been searched for by the rainfall search unit; The navigation control device according to claim 1 , comprising:

3. A congestion degree acquisition unit that acquires the congestion degree of other micromobilities around the searched rain-proof section or rain shelter point; Equipped with The notification control unit controls to notify the congestion degree acquired by the congestion degree acquisition unit together with the searched section that will not get wet in the rain or the rain shelter point. The navigation control device according to claim 2.

4. The notification control unit controls to give priority to notifying an area or a shelter spot where the congestion level is low and the driver will not get wet in the rain. The navigation control device according to claim 3.

5. A location information acquisition step of acquiring location information indicating a current location of the micromobility; A sensor data acquisition step of acquiring sensor data from a sensor that is disposed in the micromobility and is capable of detecting whether a road surface is wet or not; a weather information acquiring step of acquiring weather information based on the location information acquired by the location information acquiring step; a determining step of determining that the section is a section that will not get wet in the rain or a shelter point when the weather information obtained by the weather information obtaining step and the sensor data obtained by the sensor data obtaining step indicate that the road surface is not wet, based on the weather information obtained by the weather information obtaining step and the sensor data obtained by the sensor data obtaining step; a map information updating step of adding rain shelter information indicating the section that will not get wet in the rain or the shelter point determined in the determining step to the map information stored in the map information storage unit; A navigation method, comprising:

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