Notification device and notification program

Abstract

A notification device (30) used in a vehicle (10) and executing a notification program includes a helmet information output unit (302). The helmet information output unit (302) receives radio waves from a helmet (60) having a transmitter (602) for transmitting radio waves, acquires a value relating to a load (Wc) applied to the vehicle (10) by the helmet (60), an occupant including the driver of the vehicle (10), and luggage loaded in the vehicle (10), and outputs information relating to the helmet (60) on the basis of the received radio waves and the value relating to the load (Wc).

Description

Notification Device and Notification Program Cross - reference to Related Applications

[0001] This application is based on Japanese Patent Application No. 2024 - 220158 filed on December 16, 2024, the content of which is incorporated herein by reference.

[0002] This disclosure relates to a notification device and a notification program.

[0003] Conventionally, as described in Patent Document 1, a vehicle including a detection unit, a transmission unit, and a control unit is known. The detection unit detects the state of the vehicle. The transmission unit transmits information based on the detection result detected by the detection unit to an image display device. The control unit changes the information transmitted to the image display device when the vehicle's power changes from the on state to the off state. Also, the control unit uses the detection result to determine whether an abnormality has occurred in the vehicle. Further, when an abnormality has occurred in the vehicle as a result of the determination by the control unit, the transmission unit transmits information indicating that an abnormality has occurred in the vehicle to the image display device. Also, the image display device is attached to a helmet.

[0004] Japanese Unexamined Patent Application Publication No. 2017 - 156897

[0005] In the vehicle described in Patent Document 1, since the image display device is attached to the helmet, if the helmet is forgotten or not worn, information from the image display device cannot be obtained. Therefore, it is necessary to prevent forgetting the helmet.

[0006] An object of this disclosure is to provide a notification device and a notification program that prevent forgetting a helmet.

[0007] According to one aspect of this disclosure, a notification device for use in a vehicle includes a receiving unit that receives radio waves from a helmet having a transmitter that transmits radio waves, a helmet, passengers including the driver of the vehicle, and an acquisition unit that acquires a value related to the load applied to the vehicle by the load loaded on the vehicle, and a helmet information output unit that outputs information related to the helmet based on the radio waves received by the receiving unit and the value related to the load.

[0008] Furthermore, according to one aspect of this disclosure, the notification program causes a notification device used in a vehicle to function as a receiving unit that receives radio waves from a helmet having a transmitter that transmits radio waves, an acquisition unit that acquires values ​​relating to the load on the vehicle due to the helmet, the occupants including the driver of the vehicle, and the luggage loaded on the vehicle, and a helmet information output unit that outputs information relating to the helmet based on the radio waves and load values ​​received by the receiving unit.

[0009] This allows the vehicle driver and occupants to know if they have forgotten their helmets, thus preventing them from forgetting them.

[0010] A diagram showing the configuration of the vehicle and helmet used in the notification device of the embodiment. A flowchart showing the processing of the helmet information output unit of the information generation output unit in the notification device. A flowchart showing the processing of the overload information output unit of the information generation output unit. A flowchart showing the processing of the alcohol information output unit of the information generation output unit. A flowchart showing the processing of the handle lock information output unit of the information generation output unit. A flowchart showing the processing of the weather information output unit of the information generation output unit.

[0011] The embodiments will be described below with reference to the drawings. In the following embodiments, parts that are the same or equivalent to each other will be denoted by the same reference numeral, and their descriptions will be omitted.

[0012] The notification device that executes the notification program of this embodiment is used in vehicles where helmets are required to be worn while driving, and prevents the driver and occupants of the vehicle from forgetting their helmets. First, the vehicle and helmet used in the notification device will be described.

[0013] The vehicle is, for example, a motorcycle. As shown in Figure 1, the vehicle 10 is equipped with a load sensor 12, a vehicle speed sensor 14, a handle lock detection circuit 16, a GNSS receiver 18, a weather acquisition unit 20, a notification device 30, a display 40, and a brake system 50.

[0014] The load sensor 12 transmits a signal to the notification device 30 (described later) corresponding to the load Wc applied to the vehicle 10 by the helmet 60, the occupants including the driver of the vehicle 10, and the cargo loaded on the vehicle 10.

[0015] The vehicle speed sensor 14 transmits a signal corresponding to the vehicle speed Vc to the notification device 30, which will be described later. The vehicle speed Vc is the speed of the vehicle 10.

[0016] The steering lock detection circuit 16 detects the steering lock status of the vehicle 10. Furthermore, the steering lock detection circuit 16 transmits a signal corresponding to the detected steering lock status to the notification device 30, which will be described later.

[0017] The GNSS receiver 18 receives signals from multiple positioning satellites (not shown). Based on these received signals, the GNSS receiver 18 calculates the absolute position Pc of the vehicle 10. Furthermore, the GNSS receiver 18 transmits a signal corresponding to the calculated absolute position Pc of the vehicle 10 to the notification device 30, which will be described later. The positioning satellites used in the GNSS receiver 18 include, for example, GPS satellites, GLONASS satellites, Galileo satellites, and quasi-zenith satellites.

[0018] The weather acquisition unit 20 acquires weather information from all over Japan via a network (not shown) by having a communication interface, etc. The weather acquisition unit 20 also outputs this acquired weather information to the notification device 30, which will be described later.

[0019] Here, the helmet 60 is worn by the driver and occupants of the vehicle 10 who are carrying the electronic key 70 and the portable terminal 80. The electronic key 70 is a key related to the vehicle 10 and includes a key transmitter (not shown), an unlock switch, a lock switch, a key speaker, and a key lamp. The key transmitter transmits weak radio waves. When the unlock switch is pressed while the electronic key 70 is being carried, it transmits a signal to the vehicle 10 to unlock the main switch knob, seats, console box, etc. of the vehicle 10. When the lock switch is pressed while the electronic key 70 is being carried, it transmits a signal to the vehicle 10 to lock the main switch knob, seats, console box, etc. of the vehicle 10. The key speaker emits sound based on information from the notification device 30 described later. The key lamp emits light based on information from the notification device 30 described later. The portable terminal 80 is a smartphone or tablet, etc., and communicates with the notification device 30 described later.

[0020] Furthermore, the helmet 60 includes a helmet transmitter 600 and an alcohol sensor 602. The helmet transmitter 600 transmits radio waves to the notification device 30, which will be described later. The alcohol sensor 602 is a semiconductor gas sensor or an electrochemical gas sensor that detects the alcohol concentration Ah contained in the breath of the person wearing the helmet 60. The alcohol sensor 602 also transmits a signal corresponding to the detected alcohol concentration Ah to the notification device 30, which will be described later.

[0021] The notification device 30 acquires signals from the load sensor 12, the vehicle speed sensor 14, the handle lock detection circuit 16, and the GNSS receiver 18. Furthermore, the notification device 30 acquires information from the weather acquisition unit 20. The notification device 30 also receives weak radio waves from the electronic key 70 and radio waves from the helmet transmitter 600. Furthermore, the notification device 30 acquires a signal from the alcohol sensor 602. Based on these acquired radio waves, signals, and information, the notification device 30 generates information related to the helmet 60. Furthermore, the notification device 30 notifies the user of this generated information. The notification device 30 also outputs this generated information to the electronic key 70, the mobile terminal 80, the display 40 (described later), and the brake system 50. Details of the notification device 30 will be described later.

[0022] The display 40 shows information from the notification device 30. The brake system 50 is either a hydraulic system in which a brake lever (not shown) and a master cylinder are directly connected, or a by-wire system in which the master cylinder is driven using electrical signals without a direct connection between the brake lever and the master cylinder. Furthermore, the brake system 50 brakes the vehicle 10 based on the information from the notification device 30.

[0023] As described above, the vehicle 10 and helmet 60 used in the notification device 30 are configured as described. Next, the notification device 30 will be explained.

[0024] The notification device 30 includes an information generation output unit 300, a sound generation unit 320, a display unit 340, and a braking unit 360.

[0025] The information generation and output unit 300 is mainly composed of a microcontroller and includes a CPU, ROM, flash memory, RAM, I / O, communication interface, and bus lines connecting these components. The information generation and output unit 300 also includes a helmet information output unit 302, an overload information output unit 304, an alcohol information output unit 306, a handle lock information output unit 308, and a weather information output unit 310 as functional blocks.

[0026] The helmet information output unit 302 executes a program stored in the ROM of the information generation output unit 300. Based on the radio waves, signals, and information acquired by the notification device 30, the helmet information output unit 302 generates information about the helmet 60. Furthermore, the helmet information output unit 302 outputs this generated information to the sound generation unit 320, display unit 340, and braking unit 360, which will be described later. The helmet information output unit 302 also outputs this generated information to the electronic key 70 and the mobile terminal 80. Details of the processing by the helmet information output unit 302 will be described later.

[0027] The overload information output unit 304 executes a program stored in the ROM of the information generation output unit 300. Based on the radio waves, signals, and information acquired by the notification device 30, the overload information output unit 304 generates information regarding the overloading of the vehicle 10. Furthermore, the overload information output unit 304 outputs this generated information to the sound generation unit 320, display unit 340, and braking unit 360, which will be described later. The overload information output unit 304 also outputs this generated information to the electronic key 70 and the mobile terminal 80. Details of the processing of the overload information output unit 304 will be described later.

[0028] The alcohol information output unit 306 executes a program stored in the ROM of the information generation output unit 300. Based on the radio waves, signals, and information acquired by the notification device 30, the alcohol information output unit 306 generates information regarding the alcohol level of the driver of the vehicle 10. Furthermore, the alcohol information output unit 306 outputs this generated information to the sound generation unit 320, display unit 340, and braking unit 360, which will be described later. The alcohol information output unit 306 also outputs this generated information to the electronic key 70 and the mobile terminal 80. Details of the processing by the alcohol information output unit 306 will be described later.

[0029] The steering lock information output unit 308 executes a program stored in the ROM of the information generation output unit 300. Based on the radio waves, signals, and information acquired by the notification device 30, the steering lock information output unit 308 generates information regarding the steering lock of the vehicle 10. Furthermore, the steering lock information output unit 308 outputs this generated information to the sound generation unit 320 and the display unit 340, which will be described later. The steering lock information output unit 308 also outputs this generated information to the electronic key 70 and the portable terminal 80. Details of the processing by the steering lock information output unit 308 will be described later.

[0030] The weather information output unit 310 executes a program stored in the ROM of the information generation output unit 300. Based on the radio waves, signals, and information acquired by the notification device 30, the weather information output unit 310 generates weather-related information. Furthermore, the weather information output unit 310 outputs this generated information to the sound generation unit 320 and the display unit 340, which will be described later. The weather information output unit 310 also outputs this generated information to the electronic key 70 and the mobile terminal 80. Details of the processing of the weather information output unit 310 will be described later.

[0031] The sound-producing unit 320 is a speaker or the like, which emits sound based on information from the information generation output unit 300.

[0032] The display unit 340 transmits a signal to the display 40 to display the information from the information generation output unit 300 on the display 40.

[0033] The braking unit 360 transmits a signal to the brake system 50 to brake the vehicle 10, based on the information from the information generation output unit 300.

[0034] As described above, the notification device 30 is configured. Next, the processing by program execution of the helmet information output unit 302 will be explained with reference to the flowchart in Figure 2. The program of the helmet information output unit 302 is executed, for example, when the information generation output unit 300 receives a signal from the unlock switch of the electronic key 70.

[0035] In step S100, the helmet information output unit 302 acquires various types of information. Specifically, the helmet information output unit 302 receives radio waves from the helmet transmitter 600. Furthermore, the helmet information output unit 302 acquires the load Wc from the load sensor 12. In addition, the helmet information output unit 302 acquires the vehicle speed Vc from the vehicle speed sensor 14.

[0036] In step S102, following step S100, the helmet information output unit 302 determines whether condition F is met based on the radio waves and load Wc acquired in step S100. Condition F is met when the received radio waves are those of a pre-registered helmet 60, and the load Wc is greater than or equal to the first threshold Wc_th1 and less than or equal to the second threshold Wc_th2. The first threshold Wc_th1 is the sum of the weight of the driver of the vehicle 10 and the weight of one helmet 60. The second threshold Wc_th2 is the sum of the weight of the driver of the vehicle 10, the weight of one occupant other than the driver of the vehicle 10, and the weight of two helmets 60.

[0037] Then, when condition F is met, since the driver and occupants of vehicle 10 have not forgotten their helmets 60, the helmet information output unit 302 returns to step S100.

[0038] Furthermore, if the received radio waves from helmet 60 are not those of a pre-registered helmet 60, it is highly likely that at least one of the driver and occupants of vehicle 10 has forgotten their helmet 60. Therefore, in this case, the helmet information output unit 302 proceeds to step S104.

[0039] Furthermore, when the load Wc is less than the first threshold Wc_th1, the driver is in the vehicle 10, but since there is no weight of the helmet 60, it is highly likely that the driver of the vehicle 10 has forgotten the helmet 60. For this reason, the helmet information output unit 302 proceeds to step S104.

[0040] Furthermore, when the load Wc is greater than the second threshold Wc_th2, there is a high probability that heavy objects other than the driver, occupants, and helmet 60 are on the vehicle 10, thus reducing the safety of the vehicle 10. For this reason, the helmet information output unit 302 proceeds to step S104.

[0041] In step S104, following step S102, the helmet information output unit 302 outputs information regarding the helmet 60 and information regarding the safety of the vehicle 10 to the sound output unit 320, the display unit 340, the electronic key 70, and the portable terminal 80.

[0042] Assume that the radio signal from helmet 60 is not from a pre-registered helmet 60, or that the load Wc is less than the first threshold Wc_th1. In this case, there is a high probability that at least one of the driver and occupants of vehicle 10 has forgotten their helmet 60. Therefore, based on the information about helmet 60 output from helmet information output unit 302, the sound output unit 320 emits a voice message, for example, "Have you forgotten your helmet?". The display unit 340 also transmits a signal to the display 40 to display the text, for example, "Have you forgotten your helmet?". The text is displayed on the display 40. Furthermore, the electronic key 70 emits a sound or light, for example, to indicate that there is a high probability that the helmet 60 has been forgotten. The mobile terminal 80 also emits the sound or light. Furthermore, the text is displayed on the screen of the mobile terminal 80.

[0043] Also, assume that the load Wc is greater than the second threshold value Wc_th2. At this time, since it is highly likely that there are heavy objects other than the driver, passengers, and helmet 60 of the vehicle 10 in the vehicle 10, the safety of the vehicle 10 is reduced. Therefore, based on the information regarding the safety of the vehicle 10 output from the helmet information output unit 302, the sound output unit 320 emits a sound indicating that the safety of the vehicle 10 is reduced. Further, the display unit 340 transmits a signal for displaying a character indicating that the safety of the vehicle 10 is reduced to the display 40. A character indicating that the safety of the vehicle 10 is reduced is displayed on the display 40. Also, the electronic key 70 emits a sound or light indicating that the safety of the vehicle 10 is reduced. Further, the mobile terminal 80 emits a sound or light indicating that the safety of the vehicle 10 is reduced. Also, a character indicating that the safety of the vehicle 10 is reduced is displayed on the screen of the mobile terminal 80.

[0044] In step S106 following step S104, the helmet information output unit 302 determines whether or not the vehicle speed Vc acquired in step S100 is equal to or higher than the vehicle speed threshold value Vc_th. Thereby, the helmet information output unit 302 determines whether or not the vehicle 10 is traveling. The vehicle speed threshold value Vc_th is set by experiments, simulations, or the like so that it can be determined whether or not the vehicle 10 is traveling.

[0045] When the vehicle speed Vc is less than the vehicle speed threshold value Vc_th, the helmet information output unit 302 determines that the vehicle 10 is not traveling. At this time, the process of the helmet information output unit 302 returns to step S100. Further, when the vehicle speed Vc is equal to or higher than the vehicle speed threshold value Vc_th, the helmet information output unit 302 determines that the vehicle 10 is traveling. At this time, the process of the helmet information output unit 302 proceeds to step S108.

[0046] In step S108 following step S106, when it is highly likely that at least one of the driver and passengers of the vehicle 10 has forgotten the helmet 60, or when the safety of the vehicle 10 is reduced and the vehicle 10 is traveling. Therefore, the helmet information output unit 302 executes braking control for the vehicle 10.

[0047] Specifically, the helmet information output unit 302 transmits a signal for braking the vehicle 10 to the braking unit 360. The braking unit 360 transmits a signal for braking the vehicle 10 to the brake system 50. The brake system 50 brakes the vehicle 10. As a result, the traveling vehicle 10 decelerates or stops. For this reason, a decrease in the safety of the vehicle 10 is suppressed.

[0048] In step S110 following step S108, when the radio wave of the helmet 60 is not the radio wave of the pre-registered helmet 60, there is a possibility that a person who is not the owner of the vehicle 10 is driving the vehicle 10 because the vehicle 10 may be traveling. For this reason, the helmet information output unit 302 outputs information regarding theft of the vehicle 10 to the electronic key 70 and the mobile terminal 80.

[0049] As a result, the electronic key 70 emits sound or light indicating the occurrence of theft of the vehicle 10. Also, the mobile terminal 80 emits sound or light indicating the occurrence of theft of the vehicle 10. Further, characters indicating the occurrence of theft of the vehicle 10 are displayed on the screen of the mobile terminal 80. Thereafter, the processing of the helmet information output unit 302 returns to step S100.

[0050] As described above, the helmet information output unit 302 performs processing. Next, the processing by the execution of the program of the overload information output unit 304 will be described with reference to the flowchart of FIG. 3. The program of the overload information output unit 304 is executed, for example, when the shift range of the vehicle 10 is set to the driving range.

[0051] In step S200, the overload information output unit 304 acquires various information. Specifically, the overload information output unit 304 acquires the load Wc from the load sensor 12. Also, the overload information output unit 304 acquires the vehicle speed Vc from the vehicle speed sensor 14.

[0052] In step S202, following step S200, the overload information output unit 304 determines whether the load Wc acquired in step S200 is greater than or equal to the load threshold Wc_th. Based on this, the overload information output unit 304 determines whether the safety of the vehicle 10 has been compromised. The load threshold Wc_th is the allowable load of the vehicle 10 and is set for each vehicle type of the vehicle 10.

[0053] When the load Wc is less than the load threshold Wc_th, the overload information output unit 304 determines that the safety of the vehicle 10 has not been compromised because the load Wc is permissible. At this point, the processing of the overload information output unit 304 returns to step S200. Furthermore, when the load Wc is greater than or equal to the load threshold Wc_th, the overload information output unit 304 determines that the safety of the vehicle 10 has been compromised because the load Wc is not permissible. At this point, the processing of the overload information output unit 304 proceeds to step S204.

[0054] In step S204, following step S202, the safety of vehicle 10 is reduced due to the overloaded state of vehicle 10. Therefore, the overload information output unit 304 outputs information regarding the overloading of vehicle 10 to the sound output unit 320, the display unit 340, the electronic key 70, and the portable terminal 80.

[0055] As a result, the sound-emitting unit 320 emits a sound indicating that the vehicle 10 is overloaded. The display unit 340 also transmits a signal to the display 40 to display characters indicating that the vehicle 10 is overloaded. The display 40 displays characters indicating that the vehicle 10 is overloaded. Furthermore, the electronic key 70 emits a sound and light indicating that the vehicle 10 is overloaded. In addition, the mobile terminal 80 emits a sound and light indicating that the vehicle 10 is overloaded. Furthermore, the screen of the mobile terminal 80 displays characters indicating that the vehicle 10 is overloaded.

[0056] In step S206, following step S204, the overload information output unit 304 determines whether the vehicle speed Vc obtained in step S200 is equal to or greater than the vehicle speed threshold Vc_th. Based on this, the overload information output unit 304 determines whether the vehicle 10 is moving or not.

[0057] When the vehicle speed Vc is less than the vehicle speed threshold Vc_th, the overload information output unit 304 determines that the vehicle 10 is not moving. At this point, the processing of the overload information output unit 304 returns to step S200. When the vehicle speed Vc is equal to or greater than the vehicle speed threshold Vc_th, the overload information output unit 304 determines that the vehicle 10 is moving. At this point, the processing of the overload information output unit 304 proceeds to step S208.

[0058] In step S208, following step S206, the vehicle 10 is traveling in an overloaded state, and therefore the vehicle 10 is traveling in a state of reduced safety. For this reason, the overload information output unit 304 executes braking control for the vehicle 10.

[0059] Specifically, the overload information output unit 304 transmits a signal to the braking unit 360 to brake the vehicle 10. The braking unit 360 transmits a signal to the brake system 50 to brake the vehicle 10. The brake system 50 brakes the vehicle 10. As a result, the moving vehicle 10 slows down or stops. This suppresses a decrease in the safety of the vehicle 10. After that, the processing of the overload information output unit 304 returns to step S200.

[0060] As described above, the overload information output unit 304 performs the processing. Next, the processing by program execution of the alcohol information output unit 306 will be explained with reference to the flowchart in Figure 4. The program of the alcohol information output unit 306 is executed, for example, when the information generation output unit 300 receives a signal from the unlock switch of the electronic key 70.

[0061] In step S300, the alcohol information output unit 306 acquires various information. Specifically, the alcohol information output unit 306 receives radio waves from the helmet transmitter 600. Furthermore, the alcohol information output unit 306 acquires the alcohol concentration Ah from the alcohol sensor 602. In addition, the alcohol information output unit 306 acquires the vehicle speed Vc from the vehicle speed sensor 14.

[0062] In step S302, following step S300, the alcohol information output unit 306 determines whether the radio waves received in step S300 are radio waves from a helmet 60 that has been registered in advance.

[0063] If the received radio wave is not from a pre-registered helmet 60, the alcohol information output unit 306 returns to step S300. Furthermore, if the received radio wave is from a pre-registered helmet 60, the alcohol information output unit 306 proceeds to step S302.

[0064] In step S304, following step S302, the alcohol information output unit 306 determines whether the alcohol concentration Ah obtained in step S300 is equal to or greater than the alcohol threshold Ah_th. Based on this, the alcohol information output unit 306 determines whether driving the vehicle 10 constitutes drunk driving. The alcohol threshold Ah_th is a standard value stipulated by laws such as the Road Traffic Act, and in Japan, for example, it is 0.15 mg / L.

[0065] When the alcohol concentration Ah is less than the alcohol threshold Ah_th, the alcohol information output unit 306 determines that driving the vehicle 10 does not constitute drunk driving. Therefore, at this time, the processing of the alcohol information output unit 306 returns to step S300. When the alcohol concentration Ah is equal to or greater than the alcohol threshold Ah_th, the alcohol information output unit 306 determines that driving the vehicle 10 constitutes drunk driving. Therefore, at this time, the processing of the alcohol information output unit 306 proceeds to step S306.

[0066] In step S306, following step S304, since the driving of vehicle 10 constitutes drunk driving, the alcohol information output unit 306 outputs information regarding the alcohol level of the driver of vehicle 10 to the sound output unit 320, the display unit 340, the electronic key 70, and the mobile terminal 80.

[0067] As a result, the sound unit 320 emits a sound indicating that the driver of vehicle 10's alcohol concentration Ah is equal to or greater than the alcohol threshold Ah_th, and that driving vehicle 10 constitutes drunk driving. Furthermore, the display unit 340 transmits a signal to the display 40 to display characters indicating that the driver of vehicle 10's alcohol concentration Ah is equal to or greater than the alcohol threshold Ah_th, and that driving vehicle 10 constitutes drunk driving. The display 40 displays characters indicating that the driver of vehicle 10's alcohol concentration Ah is equal to or greater than the alcohol threshold Ah_th, and that driving vehicle 10 constitutes drunk driving. In addition, the electronic key 70 emits a sound and light indicating that the driver of vehicle 10's alcohol concentration Ah is equal to or greater than the alcohol threshold Ah_th, and that driving vehicle 10 constitutes drunk driving. Furthermore, the mobile terminal 80 emits a sound and light indicating that the driver of vehicle 10's alcohol concentration Ah is equal to or greater than the alcohol threshold Ah_th, and that driving vehicle 10 constitutes drunk driving. Furthermore, the screen of the mobile terminal 80 displays text indicating that the alcohol concentration Ah of the driver of vehicle 10 is equal to or greater than the alcohol threshold Ah_th, and that driving vehicle 10 constitutes drunk driving.

[0068] In step S308, following step S306, the alcohol information output unit 306 determines whether the vehicle speed Vc acquired in step S300 is equal to or greater than the vehicle speed threshold Vc_th. Based on this, the alcohol information output unit 306 determines whether the vehicle 10 is in motion.

[0069] When the vehicle speed Vc is less than the vehicle speed threshold Vc_th, the alcohol information output unit 306 determines that the vehicle 10 is not moving. At this point, the alcohol information output unit 306 returns to step S300. Furthermore, when the vehicle speed Vc is equal to or greater than the vehicle speed threshold Vc_th, the alcohol information output unit 306 determines that the vehicle 10 is moving. At this point, the alcohol information output unit 306 proceeds to step S310.

[0070] In step S310, following step S308, the alcohol concentration Ah of the driver of vehicle 10 is equal to or greater than the alcohol threshold Ah_th, and the vehicle 10 is being driven in a situation that constitutes drunk driving. Therefore, the alcohol information output unit 306 performs braking control for vehicle 10.

[0071] Specifically, the alcohol information output unit 306 transmits a signal to the braking unit 360 to brake the vehicle 10. The braking unit 360 transmits a signal to the brake system 50 to brake the vehicle 10. The brake system 50 brakes the vehicle 10. As a result, the moving vehicle 10 slows down or stops. This suppresses a decrease in the safety of the vehicle 10. After that, the processing of the alcohol information output unit 306 returns to step S300.

[0072] As described above, the alcohol information output unit 306 performs the processing. Next, the processing by program execution of the steering lock information output unit 308 will be explained with reference to the flowchart in Figure 5. The program of the steering lock information output unit 308 is executed, for example, when the information generation output unit 300 receives a signal from the lock switch of the electronic key 70.

[0073] In step S400, the steering lock information output unit 308 acquires various information. Specifically, the steering lock information output unit 308 acquires the steering lock status of the vehicle 10 from the steering lock detection circuit 16. The steering lock information output unit 308 also receives weak radio waves from the electronic key 70.

[0074] In step S402, following step S400, the steering lock information output unit 308 determines whether or not the steering lock is engaged on the vehicle 10 based on the steering lock status of the vehicle 10 acquired in step S400.

[0075] Then, when the steering wheel lock is engaged on the vehicle 10, the steering wheel lock information output unit 308 returns to step S400. Furthermore, when the steering wheel lock is not engaged on the vehicle 10, the vehicle 10's security capability is reduced, so the steering wheel lock information output unit 308 proceeds to step S404.

[0076] In step S404, following step S402, the steering lock information output unit 308 determines whether the radio waves received in step S400 are weak radio waves from a pre-registered electronic key 70. Based on this, the steering lock information output unit 308 determines whether the driver of the vehicle 10 is near the vehicle 10.

[0077] The steering lock information output unit 308 then determines that the driver of the vehicle 10 is near the vehicle 10 if the received radio wave is a weak radio wave from a pre-registered electronic key 70. At this time, the steering lock information output unit 308 proceeds to step S406. The steering lock information output unit 308 also determines that the driver of the vehicle 10 is not near the vehicle 10 if the received radio wave is not a weak radio wave from a pre-registered electronic key 70. At this time, the steering lock information output unit 308 proceeds to step S408.

[0078] In step S406, following step S404, the steering wheel lock is not engaged on the vehicle 10, and the driver of the vehicle 10 is near the vehicle 10. Therefore, the steering wheel lock information output unit 308 outputs information regarding the steering wheel lock to the sound generation unit 320 and the display unit 340.

[0079] As a result, the sound-producing unit 320 emits a sound indicating that the steering wheel lock on the vehicle 10 is not engaged. Furthermore, the display unit 340 transmits a signal to the display 40 to display characters indicating that the steering wheel lock on the vehicle 10 is not engaged. The display 40 displays characters indicating that the steering wheel lock on the vehicle 10 is not engaged. Therefore, the driver of the vehicle 10 can know that the steering wheel lock on the vehicle 10 is not engaged. After that, the processing of the steering wheel lock information output unit 308 returns to step S400.

[0080] In step S408, following step S404, the steering wheel lock is not engaged on the vehicle 10, and the driver of the vehicle 10 is not near the vehicle 10. Therefore, the steering wheel lock information output unit 308 outputs information regarding the steering wheel lock to the electronic key 70 and the portable terminal 80.

[0081] As a result, the electronic key 70 emits sound and light to indicate that the steering wheel lock on the vehicle 10 is not engaged. The mobile terminal 80 also emits sound and light to indicate that the steering wheel lock on the vehicle 10 is not engaged. Furthermore, text indicating that the steering wheel lock on the vehicle 10 is not engaged is displayed on the screen of the mobile terminal 80. Therefore, the driver of the vehicle 10 can know that the steering wheel lock on the vehicle 10 is not engaged. After that, the processing of the steering wheel lock information output unit 308 returns to step S400.

[0082] As described above, the steering lock information output unit 308 performs the processing. Next, the processing by program execution of the weather information output unit 310 will be explained with reference to the flowchart in Figure 6. The program of the weather information output unit 310 is executed, for example, when the information generation output unit 300 receives a weak radio wave from the electronic key 70.

[0083] In step S500, the weather information output unit 310 acquires various types of information. Specifically, the weather information output unit 310 receives a signal from the unlock switch of the electronic key 70. Furthermore, the weather information output unit 310 acquires the absolute position Pc of the vehicle 10 from the GNSS receiver 18. In addition, the weather information output unit 310 acquires weather information from all over the country from the weather acquisition unit 20.

[0084] In step S502, following step S500, the weather information output unit 310 determines whether or not it received a signal from the unlock switch of the electronic key 70 in step S500. Based on this, the weather information output unit 310 determines whether or not the operation of the vehicle 10 will be started.

[0085] The weather information output unit 310 then determines that the vehicle 10 will not start driving if it has not received a signal from the unlock switch of the electronic key 70. At this point, the processing of the weather information output unit 310 returns to step S500. Furthermore, the weather information output unit 310 determines that the vehicle 10 will start driving if it receives a signal from the unlock switch of the electronic key 70. At this point, the processing of the weather information output unit 310 proceeds to step S504.

[0086] In step S504, following step S502, the weather information output unit 310 determines whether or not there is a change in weather at the location of the vehicle 10 based on the absolute position Pc of the vehicle 10 and weather information from all over the country acquired in step S500.

[0087] If there is no change in weather at the location of vehicle 10, the weather information output unit 310 returns to step S500. If there is a change in weather at the location of vehicle 10, the weather information output unit 310 proceeds to step S506.

[0088] In step S506, following step S504, the vehicle 10 is started to move, and there is a change in weather conditions at the location of the vehicle 10. For this reason, the weather information output unit 310 outputs weather information to the sound output unit 320, the display unit 340, the electronic key 70, and the portable terminal 80.

[0089] For example, suppose the weather at the location of vehicle 10 is sunny, and according to the forecast included in the weather information, it will change from sunny to rainy in 10 minutes. At this time, the sound unit 320 will emit a voice message, for example, "It will rain in the surrounding area in 10 minutes. Please check your smartphone if necessary." Furthermore, the display unit 340 will transmit a signal to the display 40 to display the text, for example, "It will rain in the surrounding area in 10 minutes. Please check your smartphone if necessary." The above text will be displayed on the display 40. In addition, the electronic key 70 will emit sound and light to indicate that there is a change in weather at the location of vehicle 10. Furthermore, the mobile terminal 80 will emit the above sound and light. In addition, the above text will be displayed on the screen of the mobile terminal 80. For these reasons, the driver of vehicle 10 can know the change in weather at the location of vehicle 10 when starting to drive vehicle 10.

[0090] As described above, the weather information output unit 310 performs the processing. Next, we will explain how the notification device 30, which executes the notification program, prevents the helmet 60 from being forgotten.

[0091] The helmet information output unit 302 of the notification device 30 acts as a receiver in step S100 of the flowchart in Figure 2, receiving radio waves from the helmet 60. Furthermore, in step S100, the helmet information output unit 302 acts as an acquisition unit, acquiring values ​​related to the load Wc. In addition, in steps S102 and S104, the helmet information output unit 302 outputs information about the helmet 60 based on the received radio waves and values ​​related to the load Wc.

[0092] For example, the helmet information output unit 302 does not output information about the helmet 60 when the received radio wave is the radio wave of a pre-registered helmet 60, and the load Wc is greater than or equal to the first threshold Wc_th1 and less than or equal to the second threshold Wc_th2. Furthermore, the helmet information output unit 302 outputs information about the helmet 60 when the received radio wave is not the radio wave of a pre-registered helmet 60. Also, the helmet information output unit 302 outputs information about the helmet 60 when the load Wc is less than the first threshold Wc_th1.

[0093] This allows the driver and occupants of vehicle 10 to know if they have forgotten their helmets 60. Therefore, forgetting the helmets 60 is prevented.

[0094] Furthermore, the notification device 30 of this embodiment also provides the following effects.

[0095] [1-1] The helmet information output unit 302 outputs information regarding the safety of the vehicle 10 when the load Wc is greater than the second threshold Wc_th2.

[0096] This allows the driver and occupants of vehicle 10 to be aware that the safety of vehicle 10 is reduced due to an excessively large load Wc. This makes it easier for the driver and occupants of vehicle 10 to take appropriate action regarding the safety of vehicle 10. Consequently, the reduction in the safety of vehicle 10 is suppressed.

[0097] [1-2] When the radio waves received by the helmet information output unit 302 are not radio waves from a helmet 60 that has been registered in advance, when the load Wc is less than the first threshold Wc_th1, or when the load Wc is greater than the second threshold Wc_th2. In this case, when the vehicle speed Vc is greater than or equal to the vehicle speed threshold Vc_th, the braking unit 360 acts as a helmet braking unit that transmits a signal to brake the vehicle 10.

[0098] As a result, if the driver or occupants of vehicle 10 have forgotten their helmets 60, or if vehicle 10 is traveling in a situation where its safety is compromised, vehicle 10 will slow down or stop. Therefore, the deterioration of vehicle 10's safety is suppressed.

[0099] [1-3] In addition, in the above case, if the vehicle speed Vc is equal to or greater than the vehicle speed threshold Vc_th, the helmet information output unit 302 outputs information regarding the theft of the vehicle 10 in step S110.

[0100] This allows the driver and occupants of vehicle 10 to become aware of the theft of vehicle 10. This makes it easier for the driver and occupants of vehicle 10 to respond to the theft of vehicle 10.

[0101] [2-1] In steps S202 and S204 of the flowchart in Figure 3, the overload information output unit 304 outputs information regarding the overload of the vehicle 10 when the load Wc is greater than or equal to the load threshold Wc_th.

[0102] This allows the driver and occupants of vehicle 10 to be aware that the safety of vehicle 10 is reduced due to the unacceptable load Wc. This makes it easier for the driver and occupants of vehicle 10 to take appropriate action regarding the safety of vehicle 10. Consequently, the reduction in the safety of vehicle 10 is suppressed.

[0103] [2-2] When the load Wc is equal to or greater than the load threshold Wc_th, and the vehicle speed Vc is equal to or greater than the vehicle speed threshold Vc_th, the braking unit 360 acts as an overload braking unit that transmits a signal to brake the vehicle 10.

[0104] As a result, the vehicle 10, which is traveling in a situation where the vehicle's safety is compromised, will slow down or stop. Therefore, the deterioration of the vehicle's safety is suppressed.

[0105] [3-1] In steps S304 and S306 of the flowchart in Figure 4, the alcohol information output unit 306 outputs information regarding the alcohol level of the driver of the vehicle 10 when the alcohol concentration Ah is equal to or greater than the alcohol threshold Ah_th.

[0106] This allows the driver of vehicle 10 to know that driving vehicle 10 constitutes drunk driving. Therefore, it becomes easier for the driver of vehicle 10 to take appropriate action regarding the driving of vehicle 10. Consequently, the decrease in the safety of vehicle 10 is suppressed.

[0107] [3-2] When the alcohol concentration Ah is equal to or greater than the alcohol threshold Ah_th, and the vehicle speed Vc is equal to or greater than the vehicle speed threshold Vc_th, the braking unit 360 acts as a driver's braking unit that transmits a signal to brake the vehicle 10.

[0108] As a result, the vehicle 10, which is traveling in a situation where the vehicle's safety is compromised, will slow down or stop. Therefore, the deterioration of the vehicle's safety is suppressed.

[0109] [4-1] The steering lock information output unit 308 performs the processing of steps S402, S404, S406 and S408 in the flowchart of Figure 5. As a result, when the vehicle 10 is locked and the steering lock of the vehicle 10 is not engaged, the steering lock information output unit 308 outputs information regarding the steering lock of the vehicle 10.

[0110] This allows the driver and occupants of vehicle 10 to know that the steering wheel lock on vehicle 10 is not engaged. Therefore, it becomes easier for the driver and occupants of vehicle 10 to respond to the steering wheel lock issue. Consequently, the reduction in the security capabilities of vehicle 10 is suppressed.

[0111] [4-2] When the vehicle 10 is locked and the steering wheel lock of the vehicle 10 is not engaged. In this case, the sound-emitting unit 320 and the display unit 340 act as notification units that inform the vehicle 10 of information regarding the steering wheel lock when radio waves from the electronic key 70 are received by the steering wheel lock information output unit 308. Furthermore, in this case, if the steering wheel lock information output unit 308 does not receive radio waves from the electronic key 70, it outputs information regarding the steering wheel lock to the electronic key 70.

[0112] This allows the driver and occupants of vehicle 10 to know, wherever they are, that the steering wheel lock of vehicle 10 is not engaged.

[0113] [5-1] The weather information output unit 310 outputs weather information when there is a change in weather at the location of the vehicle 10 in steps S502, S504, and S506 of the flowchart in Figure 6.

[0114] This allows the driver of vehicle 10 to be aware of changes in weather conditions at the location of vehicle 10. Therefore, it becomes easier for the driver of vehicle 10 to respond to changing weather conditions at the location of vehicle 10. Consequently, the deterioration of vehicle 10's safety is suppressed.

[0115] [5-2] When the weather information output unit 310 receives a signal from the electronic key 70 to unlock the vehicle 10, it outputs weather information if there is a change in the weather at the location of the vehicle 10.

[0116] This allows the driver of vehicle 10 to know about weather changes at the location of vehicle 10 when starting to drive vehicle 10. This makes it easier for the driver of vehicle 10 to respond to changes in vehicle operation.

[0117] (Other Embodiments) This disclosure is not limited to the embodiments described above, and modifications can be made to these embodiments as appropriate. Furthermore, it goes without saying that, in each of the embodiments described above, the elements constituting the embodiment are not necessarily essential, except in cases where they are explicitly stated to be particularly essential or where they are clearly essential in principle.

[0118] The notification device and method described herein may be implemented by a dedicated computer provided by configuring a processor and memory programmed to perform one or more functions embodied by a computer program. Alternatively, the notification device and method described herein may be implemented by a dedicated computer provided by configuring a processor by one or more dedicated hardware logic circuits. Alternatively, the notification device and method described herein may be implemented by one or more dedicated computers configured by a combination of a processor and memory programmed to perform one or more functions and a processor configured by one or more hardware logic circuits. Furthermore, the computer program may be stored as instructions executed by the computer on a computer-readable non-transitional tangible recording medium.

[0119] In the above embodiment, vehicle 10 is a motorcycle. However, vehicle 10 is not limited to being a motorcycle, and may be a motorcycle unicycle, motorcycle tricycle, etc.

[0120] In the above embodiment, the program of the helmet information output unit 302 is executed when the information generation output unit 300 receives a signal from the unlock switch of the electronic key 70. However, the timing of execution of the program of the helmet information output unit 302 is not limited to when the information generation output unit 300 receives a signal from the unlock switch of the electronic key 70. For example, the timing of execution of the program of the helmet information output unit 302 may be when the shift range of the vehicle 10 is set to the driving range.

[0121] In the above embodiment, the program of the alcohol information output unit 306 is executed when the information generation output unit 300 receives a signal from the unlock switch of the electronic key 70. However, the timing of execution of the program of the alcohol information output unit 306 is not limited to when the information generation output unit 300 receives a signal from the unlock switch of the electronic key 70. For example, the timing of execution of the program of the alcohol information output unit 306 may be when the shift range of the vehicle 10 is set to the driving range.

[0122] In the above embodiment, the weather information output unit 310 outputs weather information when it receives a signal from the electronic key 70 to unlock the vehicle 10 and there is a change in the weather at the location of the vehicle 10. Alternatively, the weather information output unit 310 may output weather information when there is a change in the weather at the location of the vehicle 10, even if it does not receive a signal from the electronic key 70 to unlock the vehicle 10.

[0123] (Perspective of this disclosure) [Perspective 1] A notification device used in a vehicle (10), comprising: a receiving unit (302) that receives radio waves from a helmet (60) having a transmitter (600) that transmits radio waves; an acquisition unit (302) that acquires a value relating to the load (Wc) applied to the vehicle by the helmet, the occupants including the driver of the vehicle, and the luggage loaded on the vehicle; and a helmet information output unit (302) that outputs information relating to the helmet based on the radio waves received by the receiving unit and the value relating to the load. [Perspective 2] The notification device according to Perspective 1, wherein the helmet information output unit does not output information about the helmet when the radio waves received by the receiving unit are radio waves of the helmet that have been registered in advance, and the value relating to the load is greater than or equal to a first threshold (Wc_th1) and less than or equal to a second threshold (Wc_th2); outputs information about the helmet when the radio waves received by the receiving unit are not radio waves of the helmet that have been registered in advance; outputs information about the helmet when the value relating to the load is less than the first threshold; and outputs information about the vehicle safety when the value relating to the load is greater than the second threshold. [Perspective 3] The notification device comprises a helmet braking unit (360), wherein the helmet braking unit transmits a signal to brake the vehicle when the vehicle speed (Vc) is equal to or greater than the vehicle speed threshold (Vc_th) in any of the following cases: when the radio waves received by the receiving unit are not radio waves for the helmet that have been registered in advance, when the value relating to the load is less than the first threshold, or when the value relating to the load is greater than the second threshold. [Perspective 4] The notification device according to Perspective 2 or 3, wherein the helmet information output unit outputs information regarding the theft of the vehicle when the vehicle speed (Vc) is equal to or greater than the vehicle speed threshold (Vc_th) in any of the following cases: when the radio waves received by the receiving unit are not radio waves for the helmet that have been registered in advance, when the value relating to the load is less than the first threshold, or when the value relating to the load is greater than the second threshold.[Perspective 5] The notification device according to any one of Perspectives 1 to 4, further comprising an overload information output unit (304) that outputs information regarding the overloading of the vehicle when the value relating to the load is equal to or greater than a load threshold (Wc_th). [Perspective 6] The notification device according to Perspective 5, comprising an overload braking unit (360), wherein the overload braking unit transmits a signal to brake the vehicle when the value relating to the load is equal to or greater than the load threshold, and the vehicle speed (Vc), which is the speed of the vehicle, is equal to or greater than a vehicle speed threshold (Vc_th). [Perspective 7] The notification device according to any one of Perspectives 1 to 6, wherein the helmet has an alcohol sensor (602) that detects the alcohol concentration (Ah) of the person wearing the helmet, and further comprising an alcohol information output unit (306) that outputs information regarding the alcohol of the driver of the vehicle when the alcohol concentration is equal to or greater than an alcohol threshold (Ah_th). [Perspective 8] The notification device according to Perspective 7, comprising a driver braking unit (360), wherein the driver braking unit transmits a signal to brake the vehicle when the alcohol concentration is equal to or greater than the alcohol threshold and the vehicle speed (Vc), which is the speed of the vehicle, is equal to or greater than the vehicle speed threshold (Vc_th). [Perspective 9] The notification device according to any one of Perspectives 1 to 8, further comprising a steering lock information output unit (308) that outputs information regarding the steering lock when the vehicle is locked and the steering lock of the vehicle is not engaged. [Perspective 10] The notification device comprises an alerting unit (320, 340), wherein the alerting unit, when the vehicle is locked and the steering wheel lock is not engaged, receives radio waves from the electronic key (70) relating to the vehicle at the steering wheel lock information output unit, provides information regarding the steering wheel lock, and the steering wheel lock information output unit, when the vehicle is locked and the steering wheel lock is not engaged, does not receive radio waves from the electronic key, outputs information regarding the steering wheel lock to the electronic key, as described in Perspective 9.[Perspective 11] The notification device according to any one of Perspectives 1 to 10, further comprising a weather information output unit (310) that outputs weather information when there is a change in weather at the location of the vehicle. [Perspective 12] The notification device according to Perspective 11, wherein the weather information output unit outputs weather information when there is a change in weather at the location of the vehicle, upon receiving a signal to unlock the vehicle from an electronic key (70) relating to the vehicle. [Perspective 13] A notification program that causes a notification device used in a vehicle (10) to function as a receiving unit (302) that receives radio waves from a helmet (60) having a transmitter (600) that transmits radio waves, an acquisition unit (302) that acquires a value relating to the load (Wc) on the vehicle, which is composed of the helmet, the occupants including the driver of the vehicle, and the luggage loaded on the vehicle, and a helmet information output unit (302) that outputs information relating to the helmet based on the radio waves received by the receiving unit and the value relating to the load.

Claims

1. A notification device used in a vehicle (10), comprising: a receiving unit (302) that receives radio waves from a helmet (60) having a transmitter (600) that transmits radio waves; an acquisition unit (302) that acquires a value relating to the load (Wc) applied to the vehicle by the helmet, the occupants including the driver of the vehicle, and the luggage loaded on the vehicle; and a helmet information output unit (302) that outputs information relating to the helmet based on the radio waves received by the receiving unit and the value relating to the load.

2. The notification device according to claim 1, wherein the helmet information output unit does not output information about the helmet when the radio waves received by the receiving unit are radio waves of the helmet that have been registered in advance, and the value relating to the load is greater than or equal to a first threshold (Wc_th1) and less than or equal to a second threshold (Wc_th2); outputs information about the helmet when the radio waves received by the receiving unit are not radio waves of the helmet that have been registered in advance; outputs information about the helmet when the value relating to the load is less than the first threshold; and outputs information about the safety of the vehicle when the value relating to the load is greater than the second threshold.

3. The notification device comprises a helmet braking unit (360), and the helmet braking unit transmits a signal to brake the vehicle when the vehicle speed (Vc) is equal to or greater than the vehicle speed threshold (Vc_th) in any of the following cases: when the radio waves received by the receiving unit are not radio waves for the helmet that have been registered in advance, when the value relating to the load is less than the first threshold, or when the value relating to the load is greater than the second threshold.

4. The notification device according to claim 2, wherein the helmet information output unit outputs information regarding the theft of the vehicle when the vehicle speed (Vc) is equal to or greater than the vehicle speed threshold (Vc_th) in any of the following cases: when the radio waves received by the receiving unit are not radio waves of the helmet that have been registered in advance, when the value relating to the load is less than the first threshold, or when the value relating to the load is greater than the second threshold.

5. The notification device according to any one of claims 1 to 4, further comprising an overload information output unit (304) that outputs information regarding the overloading of the vehicle when the value relating to the load is equal to or greater than a load threshold (Wc_th).

6. The notification device according to claim 5, comprising an overload braking unit (360), wherein the overload braking unit transmits a signal to brake the vehicle when the value relating to the load is equal to or greater than the load threshold, and the vehicle speed (Vc), which is the speed of the vehicle, is equal to or greater than the vehicle speed threshold (Vc_th).

7. The notification device according to any one of claims 1 to 4, wherein the helmet has an alcohol sensor (602) for detecting the alcohol concentration (Ah) of the person wearing the helmet, and the notification device further comprises an alcohol information output unit (306) that outputs information regarding the alcohol of the driver of the vehicle when the alcohol concentration is equal to or greater than an alcohol threshold (Ah_th).

8. The notification device according to claim 7, comprising a driver's braking unit (360), wherein the driver's braking unit transmits a signal to brake the vehicle when the alcohol concentration is equal to or greater than the alcohol threshold, and the vehicle speed (Vc), which is the speed of the vehicle, is equal to or greater than the vehicle speed threshold (Vc_th).

9. The notification device according to any one of claims 1 to 4, further comprising a steering lock information output unit (308) that outputs information relating to the steering lock when the vehicle is locked and the steering lock of the vehicle is not engaged.

10. The notification device according to claim 9, wherein the notification device comprises an alerting unit (320, 340), and the alerting unit, when the vehicle is locked and the steering wheel lock is not engaged, receives radio waves from an electronic key (70) relating to the vehicle at the steering wheel lock information output unit, provides information regarding the steering wheel lock; and the steering wheel lock information output unit, when the vehicle is locked and the steering wheel lock is not engaged, does not receive radio waves from the electronic key, outputs information regarding the steering wheel lock to the electronic key.

11. The notification device according to any one of claims 1 to 4, further comprising a weather information output unit (310) that outputs weather information when there is a change in weather at the location of the vehicle.

12. The notification device according to claim 11, wherein the weather information output unit, when it receives a signal to unlock the vehicle from an electronic key (70) relating to the vehicle, outputs weather information when there is a change in the weather at the location of the vehicle.

13. A notification program that causes a notification device used in a vehicle (10) to function as a receiving unit (302) that receives radio waves from a helmet (60) having a transmitter (600) that transmits radio waves, an acquisition unit (302) that acquires a value relating to the load (Wc) on the vehicle, which is composed of the helmet, the occupants including the driver of the vehicle, and the luggage loaded on the vehicle, and a helmet information output unit (302) that outputs information relating to the helmet based on the radio waves received by the receiving unit and the value relating to the load.

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