JP6586911B2 - Motorcycle alarm system - Google Patents

Description

  The present invention relates to an alarm device that issues an alarm to an own vehicle in a situation where a motorcycle is overtaken by a four-wheeled vehicle while traveling.

  Ensuring safety when the vehicle travels on the road is a fundamental and important issue, and various mechanical or electronic safety devices have been developed and mounted on the vehicle. There are various types and types of vehicles, driving conditions, and the like, and safety devices and the like are equipped according to these.

  For example, Patent Document 1 discloses a travel safety device for a vehicle that improves safety when the vehicle is in a travel situation in which a crosswind is received.

  Vehicles, especially motorcycles, are affected not only by natural crosswinds, but also when they are overtaken by medium- and large-sized four-wheeled vehicles that travel around them. Drive while ensuring safety while paying attention to the above. In this case, when factors such as weather conditions and road conditions are involved, the influence of overtaking on a motorcycle changes in a complex manner.

JP 2010-23669 A

In particular, there are problems in the following points when overtaking motorcycles in relation to medium and large four-wheeled vehicles.
When passing by a medium- or large-sized four-wheeled vehicle, wind, water, and splashes attack the rider, but the handling of the vehicle is not only physical but also psychological depending on whether it is prepared or faced unexpectedly. There is a big difference in the impact on Safety of vehicle handling even if there is no assistance to the rider's mental preparation to receive wind, water, or splash when overtaking (with or without an alarm), even if there is no physical assist action for handling There is a difference in sex.

Winding noise increases at high speed, and since the helmet is worn, it is difficult to notice the traveling sound and exhaust sound of the approaching medium- and large-sized four-wheeled vehicles, so that it is easy to get into a sudden state.
In addition to the wind that blows through the tunnel, there is an influence of traveling wind generated by medium and large four-wheeled vehicles. This wind forms an extremely complicated flow, and water droplets or splashes are scattered by being affected by this wind and intricately due to negative pressure or Karman vortex caused by the traveling wind. It is also possible that water has fallen from the roof of the truck.

  When splashes or the like adhere to the shield of the rider's helmet, the rider's field of view is interrupted in an instant, and attention must be paid to safe driving. The higher the speed, the more important the rider's response to splashing is from the viewpoint of preventive safety. For this reason, in order to prevent adhesion of water splashes to the shield, the view of the shield surface is ensured by, for example, facing downward for a moment when a medium- or large-sized four-wheel vehicle passes.

  In particular, the tunnel is one of the strictest places in terms of the effects of wind, water, and splashes. On the other hand, it can be said that the radar wave is a good place in terms of conditions because it can capture objects as far away from the vehicle as there is no rainfall. However, even if there is no rain in the tunnel, the road surface is often moist if there is a certain amount of traffic, and if rolling up of dust etc. overlaps, it is not a little difficult to handle the vehicle even if it is not a rainy road surface. There will be an impact.

  Conventionally, in spite of various problems in overtaking a motorcycle as described above, it has been the actual situation that the problem solving from the viewpoint of preventive safety is not always sufficient.

  In view of such circumstances, the present invention is intended to provide an alarm device for a motorcycle that minimizes the influence of a four-wheel vehicle in general when it is overtaken by a medium- or large-sized four-wheel vehicle. To do.

The motorcycle alarm device according to the present invention includes means for acquiring position information and road environment information of the own vehicle, vehicle detection means for detecting the following vehicle, imaging means for photographing the subsequent vehicle, and a rider under a predetermined condition. An alarm device for a motorcycle comprising an alarm means for issuing an alarm and a control means , wherein the information issued by the alarm device is higher in vehicle height and longer in length than the own vehicle. When there is a possibility that the wheeled vehicle overtakes the own vehicle, the rider sends an instruction to the rider to move the own vehicle away from the lane boundary line and warns .

  In the motorcycle alarm device of the present invention, the alarm is characterized in that there is a difference in alarm contents between inside and outside the tunnel.

  In the motorcycle alarm device of the present invention, the alarm is characterized in that a difference is provided in the alarm contents according to the vehicle type of the host vehicle.

  In the motorcycle alarm device according to the present invention, the alarm is issued after an instruction is given to the rider to move the vehicle away from a lane boundary.

  According to the present invention, when a four-wheeled vehicle having a vehicle height higher than that of the own vehicle and having a long overall length overtakes the own vehicle, not only the physical effect due to strong wind pressure, but also the psychological aspect due to overtaking in a sudden state. In response to the influence from the vehicle, an alarm device issues a warning in advance to notify the approach of the four-wheeled vehicle, thereby preventing an unstable state in the rider's handling.

1 is a plan view schematically showing an example of a road situation to which a motorcycle alarm device of the present invention is applied. 1 is a vehicle side view schematically showing a schematic configuration of a motorcycle according to an alarm device of the present invention. It is a side view showing an example of a vehicle type of a motorcycle according to the alarm device of the present invention. 1 is a block diagram showing a schematic configuration of an alarm device for a motorcycle according to the present invention. It is a flowchart which shows the specific operation example of the alarm device of this invention. It is a figure which shows the example of the alarm content which the alarm device of the motorcycle of this invention emits. 1 is a side view schematically showing an example of a road situation to which a motorcycle alarm device of the present invention is applied.

Hereinafter, preferred embodiments of a motorcycle alarm device according to the present invention will be described with reference to the drawings.
FIG. 1 shows an example of a road situation to which a motorcycle alarm device according to the present invention is applied. In this example, the road environment to which the present invention is applied is, for example, the case of a road 1 having two lanes on one side, and the road 1 has a traveling lane 2 and an overtaking lane 3 prepared on the right side of the traveling lane 2. A roadside belt 2a is provided on the left side of the traveling lane 2. There is an opposite lane 5 on the opposite side of the one-sided two-lane road 1 across the center separation band 4. A lane boundary line 6 (center line) is displayed between the traveling lane 2 and the overtaking lane 3. It should be noted that the road environment is not limited to this example, and can be applied to, for example, three or more lanes per side.

Further, there may be a tunnel 7 having an inner wall (side wall 7a) as a road environment. In this case, the road 1 in the tunnel 7 has a traveling lane 2 and an overtaking lane 3, and the tunnel 7 is also shown in FIG. .
In the illustrated example of FIG. 1, the motorcycle 100 travels in the travel lane 2, and the four-wheel vehicle 200 travels in the vicinity of the rear of the motorcycle 100 in the overtaking lane 3. It is assumed that the motorcycle 100 and the four-wheel vehicle 200 are in the same traveling state even in the tunnel 7.

Here, as schematically shown in FIG. 2, the motorcycle 100 includes an engine 101 mounted on a frame 102, a front wheel 103 and a rear wheel 104, a steering handle 105, a fuel tank 106, and a rider. It may be a general straddle-type vehicle including a seat 107 for seating.
Further, the types of the motorcycle 100 are classified from the viewpoint of the light weight of the influence at the time of overtaking of the four-wheel vehicle 200 which is a problem of the present invention. For example, as shown schematically in FIG. 3, the screen (or cowling) 108 is provided, but the so-called scooter type (FIG. 3A) does not have a structure capable of knee grip, and the cowling 109 and knee grip are possible. There is a vehicle type having a structure (FIG. 3B), a naked type having a structure capable of knee grip without a cowling (FIG. 3C), and the like. Here, it is assumed that the screen and the cowling have the same windproof effect for the rider as compared to the case without them. Further, the tire sizes of the front wheels 103 and the rear wheels 104 are also related to the influence of wind at the time of overtaking. In the case of a relatively small diameter tire such as a scooter type, it is easily affected by the wind. Further, if the weight of the motorcycle 100 is heavy, the influence of wind is small, and the types may be classified by reflecting these. Information about these vehicle types, that is, the presence or absence of cowling and the availability of knee grip, are stored in advance in the memory 18 of the alarm device 10 described later as ID information of the own vehicle.

  The motorcycle 100 is further provided with means or devices (components) constituting the alarm device 10 of the present invention with reference to FIG. 4, and more specifically, an ECU (Electronic Control Unit) 11 as a control device. A position information acquisition unit 12, a road environment information acquisition unit 13, a vehicle speed detection unit 14, a vehicle detection unit 15 that detects a vehicle existing around the vehicle, an imaging unit 16, and the like. These devices or devices are arranged at predetermined positions of the motorcycles 100 as schematically shown in FIG.

  The ECU 11 is an electronic control unit that functions as a computer that controls constituent devices, and is disposed, for example, below the seat 107. The ECU 11 includes a CPU 17 that controls the overall operation of the alarm device 10, a memory 18 that stores various programs and data, an input and output interface 19, and the like. Information obtained from the component devices is sent to the CPU 17 via the signal processing unit 20 that performs signal processing such as conversion into data that can be processed by the CPU 17. The ECU 11 further includes a vehicle type determination unit 21, a relative distance calculation unit 22, and a relative speed that perform processing such as calculation based on information obtained from components by the CPU 17 executing a program stored in the memory 18. The calculation unit 23 further includes an image processing unit 24 and the like, which are connected to the CPU 17 and have a calculation unit 25 and the like for performing the calculation processing and the like.

  The position information acquisition means 12 receives radio waves transmitted from a plurality of artificial satellites and acquires position information of the own vehicle. The position information acquisition means 12 may be specifically a GPS receiver or the like. For example, the position information acquisition means 12 is disposed around the fuel tank 106, but the motorcycle 100 can be used as long as it can receive radio waves satisfactorily from an artificial satellite. It may be arranged at any position. The radio wave information received by the GPS receiver is transmitted to the ECU 11, and the CPU 17 always calculates position information of the own vehicle that changes every time during traveling by the calculation unit 25.

  The road environment information acquisition means 13 acquires information related to the road on which the host vehicle is traveling. Specifically, the road environment information acquisition means 13 may be a car navigation device or the like, and can acquire whether there is a tunnel or the like on the course of the own vehicle. The road environment information acquisition means 13 may be one that is functionally integrated with the GPS receiver of the position information acquisition means 12, and in that case, it is advantageous in terms of arrangement space and the like. The road environment information includes not only a road facility environment such as a tunnel but also weather information that can be acquired directly or indirectly from a weather satellite or the like.

  Further, the current position information of the own vehicle can be acquired by the GPS receiver of the position information acquisition means 12, but in an environment where radio waves from an artificial satellite such as in a tunnel are difficult to receive, the gyro and the vehicle speed detection means 14 An autonomous navigation device configured using a rotational speed sensor or the like can function. The GPS function is temporarily supplemented even in such a road environment such as a tunnel so that proper position information and road environment information can be always grasped.

  The vehicle speed detection means 14 is constituted by a rotation speed sensor or the like that detects the traveling speed of the host vehicle and detects, for example, the rotation speed of the front wheel 103 or the rotation speed of a drive sprocket provided at the output end of the transmission gear. The vehicle speed information detected by the rotation speed sensor or the like is transmitted to the ECU 11, and the CPU 17 always calculates the vehicle speed of the host vehicle that changes every time during traveling by the calculation unit 25.

  The vehicle detection means 15 is configured by a radar device that detects the presence of a vehicle around the host vehicle, typically a millimeter wave radar (which can also be a laser radar). If the short distance is the main target, ultrasonic waves may be used instead of millimeter waves or lasers. The vehicle detection means 15 has a radar wave transmission function for irradiating a radar wave around the own vehicle and a reflected wave reception function for receiving a reflected wave reflected around the own vehicle. A signal for calculation is generated. Here, in this embodiment, the rider himself / herself visually confirms the situation on the front side of the host vehicle, and mainly detects the rear side of the host vehicle. For this reason, the radar device of the vehicle detection means 15 is disposed in the rear part of the motorcycle 100 or in the vicinity of the rear end so that the radar wave can be emitted mainly toward the rear of the own vehicle. For example, the radar device may be arranged close to a brake lamp or the like. As shown in FIG. 1, the detection range S by the millimeter wave radar in the vehicle detection means 15 is about 120 m when the detection environment condition is good, and other detection conditions such as rain or fog are bad. It has characteristics such as being less susceptible to detection than detection means.

  The image pickup means 16 is constituted by an image pickup apparatus for photographing the presence of a vehicle around the own vehicle, typically a camera (including an infrared camera), and an image signal obtained by the image pickup means 16 is sent to the image processing unit 24. In the image processing unit 24, an image signal for determining the vehicle type by the vehicle type determination unit 21 is generated. In the present embodiment, the camera or the like of the imaging means 16 is also disposed near the rear part or the vicinity of the rear end part of the motorcycle 100 so that mainly the rear direction of the own vehicle can be photographed. Image information captured by the imaging unit 16 is transmitted to the ECU 11. Note that the number of cameras of the image pickup means 16 is not limited to one, and one or more cameras may be mounted on the right side and the right side, respectively, and are determined in consideration of image quality such as resolution of captured images and cost. .

  In the ECU 11, the vehicle type determination unit 21 has an image analysis unit attached thereto, and the vehicle type determination unit 21 performs image analysis on image information captured by the imaging unit 16 and subjected to image processing by the image processing unit 24 according to a program by the CPU 17. . In the present embodiment, whether the vehicle around the own vehicle is a medium or large four-wheel vehicle is a problem. In the vehicle type determination unit 21, the data about the medium or large four-wheel vehicle stored in the memory 18 and the image by the image analysis unit. The analysis result of the analysis is collated to determine whether or not the vehicle is a medium or large four-wheel vehicle.

  The relative distance calculation unit 22 uses the position information of the own vehicle obtained from the position information acquisition unit 12 and the relative distance between the vehicle around the own vehicle obtained from the radar device of the vehicle detection unit 15 and Calculate the relative position and relative distance to the car. The positional information of the positional information acquisition unit 12 and the relative distance information of the vehicle detection unit 15 are acquired or detected in real time, and the relative position calculated by the relative distance calculation unit 22 is a simple inter-vehicle distance between the vehicle and the surrounding vehicles. Rather, it includes the direction of the surrounding vehicle behind the vehicle at the current position, that is, the relative distance information indicating whether the vehicle is curving from right behind to the right or left. Whether the vehicle is in 2 or the overtaking lane 3 is present.

  The relative speed calculation unit 23 calculates the relative speed of the surrounding vehicles with respect to the own vehicle based on the temporal change of the relative distance with the surrounding vehicles obtained from the relative distance calculation unit 22. If there is no change in the relative distance between the vehicle and the surrounding vehicles, the relative speed is 0, that is, the surrounding vehicles are at the same speed as the own vehicle. If this state continues, there is no possibility that the vehicle will be overtaken. . As the relative distance increases or decreases, the surrounding vehicles are far from the vehicle (referred to as negative (-) relative speed), that is, the surrounding vehicles are slower than the own vehicle, It is possible to grasp that the vehicle is approaching (referred to as a positive (+) relative speed), that is, the surrounding vehicle is faster than the own vehicle. If the surrounding vehicle has a positive relative speed, the vehicle may be overtaken if the state continues.

  In the present embodiment, there is a problem when the own vehicle is overtaken by medium and large vehicles, and the surrounding vehicles have a higher vehicle speed than the own vehicle in the vicinity of the own vehicle, that is, have a positive relative speed. Based on the relative distance obtained by the relative distance calculation unit 22 and the relative speed obtained by the relative speed calculation unit 23, the CPU 17 determines that the vehicle is a medium / large vehicle from the time of detection of the medium / large vehicle. Calculate the time (seconds) to be overtaken by the vehicle. In other words, it is possible to predict the timing (passing timing) at which the own vehicle is overtaken by medium and large four-wheeled vehicles. In this case, the aspect of the relative speed change of the surrounding vehicles is not necessarily uniform, and the speed may change, for example, in a gradually increasing or rapidly increasing manner. The longer the overtaking time, the more likely the relative speed change will occur depending on the driving conditions of the surrounding vehicles. In determining the possibility of being overtaken, for example, when the positive relative speed increases, the possibility of being overtaken may be determined based on the relative speed change of surrounding vehicles. Good.

  The ECU 11 further includes an alarm signal generation unit 26 that generates an alarm signal such as a sound or image signal, and transmits the alarm signal to the alarm device 27. As a form of alarm provided to the rider from the alarm device 27, the alarm is made with the alarm contents which are voiced or visualized. For example, to the rider through voice guidance into the helmet worn by the rider, and display on instruments such as the meter unit of the vehicle including a speedometer, body parts such as a screen, or travel assist parts such as a car navigation device. Can be provided.

Next, an example of the operation of the motorcycle alarm device 10 according to the present invention will be described with reference to the example of FIG. Here, the alarm device 10 of the present embodiment is characterized by the following operation.
First, as information for issuing an alarm signal generated by the alarm signal generator 26 by the alarm device 27, there is a possibility that the four-wheeled vehicle 200 having a vehicle height higher than that of the own vehicle and having a long overall length will overtake the own vehicle. This is an alarm issued in some cases.

  Here, when the four-wheel vehicle 200 passes by the motorcycle 100 in the example of FIG. 1, an alarm is issued by the alarm device 10 to minimize the influence on the handling of the own vehicle. Vehicles that affect the handling of the own vehicle are mainly vehicles such as trucks and buses that have a higher vehicle height and a longer overall length than the own vehicle. This is because when these medium and large four-wheeled vehicles pass the motorcycle 100, a strong wind pressure is applied to the motorcycle 100, which may significantly affect the handling of the motorcycle 100.

In this case, the alarm issued by the alarm device 10 is implemented with a difference in the alarm contents between the tunnel 7 and the outside of the tunnel 7.
Moreover, the warning which the warning device 10 emits is implemented by providing a difference in the warning contents for each vehicle type of the own vehicle.
Furthermore, the warning of the warning device 10 is issued after the rider is instructed to leave the vehicle away from the lane boundary line 6.

Hereinafter, a specific operation example of the alarm device 10 of the present embodiment will be described with reference to a flowchart shown in FIG. The flowchart shown in FIG. 5 is realized by the CPU 17 of the ECU 11 executing a program stored in the memory 18. Note that the ECU 11 always acquires information from the position information acquisition unit 12 (GPS receiver), the road environment information acquisition unit 13, the vehicle speed detection unit 14, and the like.
When the engine 101 of the motorcycle 100 starts and starts running, the alarm device 10 is activated. The alarm device 10 can be activated in conjunction with the start of the engine 101, or after the engine 101 has been started, it can be activated by turning on an activation button or the like provided in the alarm device 10 separately. First, in step S11, it is determined whether or not a subsequent vehicle exists on the road 1. In this case, the presence of the following vehicle is confirmed by receiving the reflected wave of the millimeter wave radar irradiated from the vehicle detection means 15 to the rear of the host vehicle.

  Next, if there is a subsequent vehicle, it is determined in step S12 whether the subsequent vehicle is a medium or large four-wheel vehicle of the four-wheel vehicle 200. In this case, the image of the subsequent vehicle imaged by the imaging unit 16 is image-analyzed by the vehicle type determination unit 21 to determine whether the vehicle is a medium or large four-wheeled vehicle.

  Next, when it is determined that the detected succeeding vehicle is a medium- or large-sized four-wheeled vehicle, in step S13, the relative distance calculation unit 22 determines the position information of the own vehicle obtained by the position information acquisition unit 12 and the vehicle detection unit. The relative position and the relative distance of the four-wheel vehicle 200 with respect to the host vehicle are calculated based on the relative distance from the four-wheel vehicle 200 obtained in step 15.

  Subsequently, in step S14, the relative speed calculation unit 23 calculates the relative speed of the four-wheel vehicle 200 with respect to the host vehicle based on the temporal change in the relative distance from the four-wheel vehicle 200 obtained by the relative distance calculation unit 22.

  Next, in step S15, based on the relative distance and relative speed of the four-wheel vehicle 200 calculated by the relative distance calculation unit 22 and the relative speed calculation unit 23, respectively, is there a possibility that the own vehicle may be overtaken by the four-wheel vehicle 200? Judge whether. If the calculated positive relative speed continues as it is, the vehicle may be overtaken.

  Next, when it is determined that the own vehicle may be overtaken by the four-wheeled vehicle 200, in step S16, the rider is instructed to leave the lane boundary line 6 between the traveling lane 2 and the overtaking lane 3. Is issued. By bringing the motorcycle 100 as close as possible to the roadside band 2a side of the traveling lane 2, it is possible to prevent the motorcycle 100 from being sucked in by the negative pressure during overtaking. The instruction to leave from the lane boundary line 6 is not an alarm, but the instruction content that is voiced or visualized using the alarm device 27 may be notified.

  Next, in step S17, it is determined whether or not the vehicle is currently in the tunnel 7. This determination is made based on the position information obtained by the position information obtaining unit 12 and the road environment information obtained by the road environment information obtaining unit 13. In general, in the tunnel, in addition to the wind blowing through the tunnel, there is an influence of the traveling wind generated by the vehicle, and this traveling wind forms an extremely complicated flow. If water droplets or splashes are applied to this traveling wind, the tunnel will be the most severely conditional place in terms of the influence of those. Therefore, it is determined whether the vehicle is in the tunnel 7 as the road environment.

  Next, in step S18, if it is determined in step S17 that it is not in the tunnel 7, alarm 1 is issued. Here, as shown in FIG. 6, the specific contents of alarm 1 include the presence / absence of flying water / splash as shown in (a) to (h), and the influence of wind from the direction of medium / large four-wheeled vehicles (large, medium , Small) and centerline withdrawal. The warning content of these items is that flying / splashing affects the rider's field of view, wind pressure from medium and large four-wheeled vehicles affects the rider's handling, and departure from the centerline affects negative pressure when overtaking It is to do.

In this case, the alarm contents are set according to the vehicle type, that is, according to the presence / absence of cowling and the availability of knee grip, and further considering the road surface condition. The cowling has a windproof effect on the rider, but is easily affected by the running wind. Knee grip has the effect of keeping the rider's posture stable. As an example, regarding the magnitude of the influence of the traveling wind listed as the alarm content, when cowling is present and knee grip is not possible, the influence of the traveling wind is large as in alarms 1 (c) and (d), and there is no cowling. When knee grip is not possible, the influence of traveling wind is small as in alarms 1 (g) and (h). When the cowling is present and the knee grip is possible, the running wind is being affected as in alarms 1 (a) and (b). Further, when there is no cowling and knee grip is possible, the influence of the traveling wind is considered to be extremely small as in alarms 1 (e) and (f).
Further, the road surface condition is closely related to the flying water / splash, and the road surface condition changes depending on the presence or absence of rain, and the water / splash occurs accordingly. Therefore, in the case of rainy weather, flying water / splash is listed as the warning content, and when it is cloudy or sunny, it is excluded from the warning content, thus ensuring the effectiveness of the warning content by reflecting the weather conditions. .

Next, in step S19, if it is determined in step S17 that it is in the tunnel 7, an alarm 2 is issued. As shown in FIG. 6, the specific contents of alarm 2 include the presence / absence of flying water / splash as shown in (a) to (h), the influence of the wind from the surroundings of the vehicle (large, medium, small) and the departure from the center line. Etc. are included. Here, in the tunnel 7, there is a wind (tunnel wind W) that blows through the tunnel 7 with reference to FIGS. 1 and 7. In this case, for example, the four-wheeled vehicle 201 is placed on the passing lane 3 in front of the motorcycle 100. Assume that you are traveling. Although there is no rainfall itself in the tunnel 7, there is an influence of water droplets or the like from the road surface condition or the roof of the four-wheeled vehicle 200. In addition to the tunnel wind W, the influence of the traveling wind w generated by the four-wheel vehicle 200 (medium / large vehicle) is large, and this traveling wind w forms a very complicated flow in the tunnel 7. Due to the traveling wind w, a negative pressure flow w ₁ , a Karman vortex flow w ₂ , a wall surface reflected flow w ₃ , a winding flow w _4, etc. are formed. There are cases where the wall surface reflected flow w ₃ is reflected by the side wall 7a (FIG. 1) and cases where it is reflected by the ceiling wall 7b (FIG. 7). These negative pressure flow w ₁ , Karman vortex flow w ₂ , wall reflection flow w ₃ , winding flow w _4, etc. interact in a complex manner when the motorcycle 100 is overtaken, and act as wind pressure from the periphery of the motorcycle 100.

  As an example, regarding the magnitude of the influence of the wind from the surroundings of the vehicle listed in the alarm contents in the case of the alarm 2, when the cowling is present and the knee grip is not possible, the alarms such as the alarm 2 (c) and (d) The influence of wind from the surroundings of the vehicle is large, and when there is no cowling and knee grip is not possible, the influence of wind from the surroundings of the own vehicle is small as in alarms 2 (g) and (h). When the cowling is present and the knee grip is possible, the wind from the surroundings of the vehicle is under influence as in alarms 2 (a) and (b). Further, when there is no cowling and knee grip is possible, the influence of wind from the surroundings of the vehicle is considered to be extremely small as in alarms 2 (e) and (f).

  In step S20, when the engine 101 of the motorcycle 100 stops, the processing flow in the alarm device 10 ends.

Next, main effects and the like by the inter-vehicle information sharing system 10 of the present invention will be described.
As described above, the warning device 10 issues a warning when there is a possibility that the four-wheeled vehicle 200 having a vehicle height higher than that of the own vehicle and having a long overall length may pass the own vehicle, such as a truck or a bus.
When these medium- and large-sized four-wheeled vehicles pass the motorcycle 100, a strong wind pressure is applied to the motorcycle 100, and the handling of the motorcycle 100 is significantly affected as it is. Not only such physical effects but also psychological effects caused by overtaking in a sudden strike state, the warning device 10 issues a warning in advance to inform the approach of the four-wheeled vehicle 200, and in rider handling Occurrence of an unstable state can be prevented in advance.

Further, the alarm issued from the alarm device 10 provides a difference in the alarm contents between inside the tunnel 7 and outside the tunnel 7.
In the tunnel 7, water droplets or splashes are added to the traveling wind, and the influence on the handling of the motorcycle 100 becomes the most severe. Whether you drive inside the tunnel 7 or outside the tunnel 7, or by taking into account the weather conditions in consideration of the weather conditions, the alarm that is closest to the situation on the spot is provided, the rider's Don't overload your mental preparation.

Further, the alarm issued from the alarm device 10 provides a difference in the alarm contents for each vehicle type of the motorcycle 100.
The alarm contents are ranked according to the presence / absence of cowling and the presence / absence of knee grip, which are closely related to the degree of influence of the four-wheeled vehicle 200 when overtaking, and the alarm contents are classified according to the vehicle type of the motorcycle 100. The warnings that are issued are easy to get close to the actual situation, and there are advantages such as not overloading the rider's mind preparation.

  Further, a warning is issued after the rider is instructed to leave the lane boundary line 6, that is, the motorcycle 100 is first separated from the approaching four-wheel vehicle 200, thereby ensuring higher safety. Can do. If the motorcycle 100 is closer to the lane boundary line 6, the influence from the four-wheel vehicle 200 is increased, so that the influence at the time of overtaking can be physically reduced before issuing an alarm.

  In relation to the problem of overtaking the motorcycle 100 by the medium and large four-wheeled vehicle already described, when the vehicle is overtaken by the medium or large four-wheeled vehicle, wind or water and further splashes hit the rider. By receiving the warning of the device 10, overtaking can be predicted. If possible, it is possible to stabilize the position of the vehicle by performing a knee grip or the like in advance, and to optimize the handling of the vehicle. At that time, the rider is ready to receive wind, water, or splash, and a psychologically effective assist effect is obtained.

  In addition, wind noise increases when traveling at a high speed, but by issuing an alarm by voice guidance or the like into the helmet by the alarm device 10, the alarm is accurately recognized even when the surrounding noise is large. In this case, an alarm can be visually displayed on an instrument such as a meter unit, and the alarm can be transmitted completely.

In addition, as described above, in the tunnel 7, due to the negative pressure flow w ₁ , the Karman vortex flow w ₂ , the wall surface reflected flow w ₃ , the winding flow w _4, etc. that are formed due to the traveling wind w, water droplets or splashes are also generated by this wind. Scattered while dancing in a complicated manner. By setting the alarm contents in consideration of the weather conditions or the like that are closely related to them, the rider can make preparations based on an alarm that is extremely realistic.
As described above, according to the alarm device 10 of the present invention, it is possible to minimize the influence of the four-wheeled vehicle 200 when the motorcycle 100 is overtaken, and to realize high running stability of the motorcycle 100.

As mentioned above, although this invention was demonstrated with various embodiment, this invention is not limited only to these embodiment, A change etc. are possible within the scope of the present invention.
For example, although examples of trucks and buses have been described as four-wheel vehicles, vehicles other than these, such as super large vehicles such as trailers, special vehicles, and the like are also applicable to the present invention.

1 one-sided two-lane road, 2 traveling lane, 3 overtaking lane, 4 median strip, 5 oncoming lane, 6 lane boundary, 7 tunnel, 10 alarm device, 11 ECU, 12 location information acquisition means, 13 road environment information acquisition Means, 14 vehicle speed detection means, 15 vehicle detection means, 16 imaging means, 17 CPU, 18 memory, 19 input and output interface, 20 signal processing section, 21 vehicle type determination section, 22 relative distance calculation section, 23 relative speed calculation section , 24 image processing unit, 25 calculation unit, 26 alarm signal generation unit, 27 alarm device, 100 motorcycle, 200 four-wheel vehicle.

Claims (4)

Means for acquiring position information of the own vehicle and road environment information; vehicle detection means for detecting a succeeding vehicle; imaging means for photographing the succeeding vehicle; alarm means for issuing a warning to a rider under a predetermined condition; and control a warning device of a motorcycle having a unit, and
The information issued by the alarm device indicates that the four-wheeled vehicle having a vehicle height higher than that of the host vehicle and having a long overall length may pass the host vehicle. An alarm device for a motorcycle, characterized in that an instruction to leave the vehicle and an alarm are issued.   2. The motorcycle warning device according to claim 1, wherein the warning is issued after an instruction is issued to the rider to move the vehicle away from a lane boundary line.   The motorcycle warning device according to claim 1 or 2, wherein the warning has a difference in warning contents between inside and outside the tunnel.   The motorcycle warning device according to any one of claims 1 to 3, wherein the warning is provided with a difference in warning content according to a vehicle type of the host vehicle.

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