Start assistance device, start assistance method, and start assistance program

Abstract

To assist the start of a competition.SOLUTION: In a boat race, a sensor device S1 mounted on a boat B1 calculates a predicted reaching time t1 at which the boat B1 reaches a start line L on the basis of the position and speed of the own device and the position of the start line L. When the predicted reaching time t1 is earlier than the start time T, the sensor device S1 outputs a first warning to an operator of the boat B1. When the predicted reaching time t1 is later than the start time T, the sensor device S1 outputs a second warning, different from the first warning, to the operator of the boat B1. For example, when the predicted reaching time t1 at which the boat B1 reaches the start line L is "1.8 seconds later" and the start time T is "2 seconds later", the predicted reaching time t1 becomes earlier than the start time T. In this case, the sensor device S1 outputs the first warning by lighting or flashing an indicator of the own device in a first color.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a start support device, a start support method, and a start support program. [Background technology]

[0002] Boat races use a flying start system, in which each competitor times themselves and crosses the starting line within a set time (for example, between the time when the second hand of a large clock strikes midnight and 1 o'clock) to begin the race.

[0003] If a boat starts even a little earlier than the designated time, it will be disqualified for a false start. Also, if a boat starts after the designated time, it will be disqualified for a late start. All tickets (winning tickets) for boats that start a false start or are late will be returned.

[0004] As a related prior art technique, for example, there is a technique for measuring the boat speed at a predetermined position before the starting position, predicting the arrival time to the starting position, and issuing a warning to the boatmen. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 3-80885 Summary of the Invention [Problem to be solved by the invention]

[0006] However, with conventional technology, it is difficult to support athletes in competitions such as boat races so that they start within a set time.

[0007] In one aspect, the present invention aims to provide support for starting in a competition.

Means for Solving the Problem

[0008] In one embodiment, in a competition that starts with a run-up on water, based on the position and speed of the own device mounted on the boat while running towards the starting line and the position of the starting line, the arrival prediction time when the boat reaches the starting line is calculated. When the calculated arrival prediction time is earlier than the start time of the competition, a first warning is output to the operator of the boat. When the arrival prediction time is later than the start time, a second warning different from the first warning is output to the operator of the boat, and a start support device is provided.

Effect of the Invention

[0009] According to one aspect of the present invention, there is an effect that the start in a competition can be supported.

Brief Description of the Drawings

[0010]

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Embodiments for Carrying Out the Invention

[0011] Hereinafter, embodiments of a start support device, a start support method, and a start support program according to the present invention will be described in detail with reference to the drawings.

[0012] (Embodiment) FIG. 1 is an explanatory diagram showing an example of an embodiment of a start support method according to the embodiment. In FIG. 1, a start support device 101 (for example, start support devices 101a, 101b, 101c) is a computer that supports a start in a competition. Here, the target competition is a competition that starts while running on water as a run-up, for example, a competition using the flying start method.

[0013] Examples of competitions using the flying start method include motorboat racing (boat race) and yacht racing. Motorboat racing is a race of motorboats. In motorboat racing, winning boat tickets (boat tickets) are sold, and prize money is paid to the winning tickets. A motorboat is a boat equipped with an internal combustion engine (engine) and propelled thereby. Yacht racing is a competition of yachts. A yacht is a boat that advances using the wind received by the sail as an energy source.

[0014] For example, in boat racing, each athlete (the helmsman of each boat) measures the timing and the competition starts when they cross the starting line within the determined time (start time). The start time is, for example, the period while the second hand of a large clock (starting signal clock) installed in the venue points from 0 o'clock to 1 o'clock. Each athlete measures the start timing while looking at the large clock, for example.

[0015] In boat racing, if an athlete misjudges the timing and starts even a little earlier than the start time, that boat will be disqualified as a false start. Also, if they start after the start time has passed, that boat will be disqualified as a late start. Starting at the perfect timing is related to the skill of the athlete and can be said to be one of the interesting aspects of boat racing.

[0016] However, all the boat tickets (winning boat voting tickets) for the boats with false starts or late starts will be refunded. Refunding means returning (paying back) the amount of the purchased boat ticket. False starts and late starts are called start accidents, and since the refunding of boat tickets occurs, losses will occur on the operation side. It also causes trouble to the purchasers of the boat tickets as the tickets they purchased as expected are refunded.

[0017] In addition, athletes who cause start accidents may be penalized, such as being unable to participate in the race for a certain period, because they cause trouble to the operation side and fans. Severe penalties are related to the athlete's life, so there are cases where they are afraid of being given a false start penalty and cannot make a start dash, and thus cannot demonstrate their original strength.

[0018] For these reasons, it is desired to support the start of athletes in boat racing and the like so that false starts and late starts occur as little as possible.

[0019] Here, it is conceivable to measure the boat speed at a predetermined position before the start position, predict the arrival time to the start position, and issue a warning to the athlete if the time after that time is not within the determined time. However, in this method, even if a warning is issued, it is difficult for the athlete to determine whether they will fly or be late if they continue as they are.

[0020] For example, regardless of whether the predicted arrival time at the start position is before or after the determined time, the same warning is uniformly issued. In this case, when the athlete is warned while running up towards the start line, they may reflexively release the throttle lever and lower the motor output. This causes a problem that even in a situation where a late start is likely to occur, deceleration due to the warning causes an even greater late start.

[0021] Therefore, in this embodiment, in a competition that starts while running up on water, a start support method for suppressing the occurrence of flying or a late start by supporting the start of each athlete during the run-up will be described. Here, a processing example of the start support device 101 will be described.

[0022] (1) The start support device 101 calculates the predicted arrival time when the boat reaches the start line 110 based on the position and speed of its own device mounted on the boat running up towards the start line 110 and the position of the start line 110. At this time, the start support device 101 may calculate the predicted arrival time when the boat reaches the start line 110 in consideration of the acceleration of its own device. The start line 110 is a line (actually an invisible line) that serves as the starting point in the race.

[0023] In the example of FIG. 1, the boats that are approaching the starting line 110 during the run-up are referred to as "boats 102, 103, 104". Also, the starting support device 101 mounted on boat 102 is denoted as "starting support device 101a", the starting support device 101 mounted on boat 103 is denoted as "starting support device 101b", and the starting support device 101 mounted on boat 104 is denoted as "starting support device 101c".

[0024] In this case, based on the position and speed of its own device mounted on boat 102 and the position of the starting line 110, the starting support device 101a calculates the predicted arrival time t1 when boat 102 reaches the starting line 110. The starting support device 101b calculates the predicted arrival time t2 when boat 103 reaches the starting line 110 based on the position and speed of its own device mounted on boat 103 and the position of the starting line 110. The starting support device 101c calculates the predicted arrival time t3 when boat 104 reaches the starting line 110 based on the position and speed of its own device mounted on boat 104 and the position of the starting line 110. The predicted arrival times t1, t2, and t3 are represented by, for example, the elapsed time from the current time.

[0025] (2) When the calculated predicted arrival time is before the start time 130 of the competition, the starting support device 101 outputs a first warning 131 to the operator (competitor) of the boat. Also, when the calculated predicted arrival time is after the start time 130 of the competition, the starting support device 101 outputs a second warning 132 different from the first warning 131 to the operator of the boat.

[0026] Here, the start time 130 is a time determined according to the competition and has a certain time width. Here, the start time 130 is the period while the second hand of the clock 120 points from 0 o'clock to 1 o'clock. The first warning 131 is, for example, to inform that it will fly as it is. The second warning 132 is, for example, to inform that it will be late as it is.

[0027] In the example of FIG. 1, assume that the start of boat 102 is slow and the predicted arrival time t1 is after the start time 130. In this case, the start assist device 101a outputs a second warning 132 to the operator of boat 102. The second warning 132 is output in a manner different from the first warning 131.

[0028] Also, assume that boat 103 can accelerate well and the predicted arrival time t2 is within the start time 130. In this case, the start assist device 101b does not output either the first warning 131 or the second warning 132 to the operator of boat 103.

[0029] Also, assume that the acceleration speed of boat 104 is fast and the predicted arrival time t3 is before the start time 130. In this case, the start assist device 101c outputs the first warning 131 to the operator of boat 104. The first warning 131 is output in a manner different from the second warning 132.

[0030] Thus, according to the start assist device 101, by assisting the start of each athlete (the operators of each boat 102 - 104) during the acceleration in the competition, it is possible to suppress the occurrence of flying starts and starts being late. For example, the start assist device 101 can output different warnings depending on whether the predicted arrival time when the boat reaches the start line 110 is before or after the start time 130, making it possible to determine whether it will be a flying start or a late start as it is.

[0031] In the example of FIG. 1, the second warning 132 to the operator of boat 102 is output by the start assist device 101a mounted on boat 102. As a result, the operator of boat 102 can know that it will be a late start as it is, and thus can avoid the late start by instantly increasing the speed of boat 102, for example, and advancing the timing of starting.

[0032] In addition, a first warning 131 is output to the operator of the boat 104 by the start support device 101c mounted on the boat 104. As a result, since the operator of the boat 104 can understand that it will fly as it is, the operator can avoid flying by, for example, immediately reducing the speed of the boat 104 and delaying the timing to cut the start.

[0033] (System configuration example of the start support system 200) Next, a system configuration example of the start support system 200 including the start support device 101 shown in FIG. 1 will be described. In the following description, the case where the start support device 101 shown in FIG. 1 is applied to a sensor device mounted on each boat (craft) participating in a boat race (motorboat racing) will be described as an example. A boat race is a flying start type competition that starts while running on water for a running start.

[0034] FIG. 2 is an explanatory diagram showing a system configuration example of the start support system 200. In FIG. 2, the start support system 200 includes an information collection server 201, a reference station 202, and sensor devices S1 to Sn (n: a natural number of 2 or more). In the start support system 200, the information collection server 201, the reference station 202, and the sensor devices S1 to Sn are connected via a wired or wireless network 210. The network 210 is, for example, the Internet, a LAN (Local Area Network), a WAN (Wide Area Network), or the like. Although not shown, the start support system 200 may include network devices (for example, routers, switches, etc.) for establishing or relaying communication between the information collection server 201 / reference station 202 / sensor devices S1 to Sn.

[0035] In the following description, any one of the sensor devices S1 to Sn may be denoted as "sensor device Si" (i = 1, 2,..., n). The sensor device Si corresponds to, for example, the start support device 101 shown in FIG. 1.

[0036] The information collection server 201 is a computer that collects various types of information. For example, the information collection server 201 collects correction data from the reference station 202 or collects positioning information from each of the sensor devices S1 to Sn.

[0037] The reference station 202 is a computer that has a function of measuring its own position. The reference station 202 is installed at a boat race course (for example, on the rooftop of the stand). Also, the reference station 202 generates correction data for correcting the measured position based on the installation position information of its own station. The installation position information indicates the installation position of its own station. The installation position of its own station is represented by, for example, latitude and longitude. The installation position information is stored in the reference station 202.

[0038] Specifically, for example, the reference station 202 receives radio waves from GPS (Global Positioning System) satellites and measures its own position. The reference station 202 may use satellites of the quasi-zenith satellite system as the satellites. The position of its own station is represented by, for example, latitude and longitude.

[0039] Next, the reference station 202 calculates the error between the installation position of its own station indicated by the installation position information and the measured position of its own station. The error is, for example, the result of subtracting the measured position (latitude, longitude) of its own station from the installation position (latitude, longitude) of its own station. Then, the reference station 202 generates correction data including the calculated error (latitude error, longitude error).

[0040] Also, the positioning accuracy varies depending on the weather and the state of the atmosphere. Therefore, the reference station 202 may measure its own position and regenerate the correction data every certain period (for example, a period of about 1 second to several seconds). The generated correction data is transmitted from the reference station 202 to each of the sensor devices S1 to Sn via, for example, the information collection server 201.

[0041] The sensor devices S1 to Sn are computers that assist in the start in a boat race. The sensor device Si is mounted on the boat Bi. For example, when competing with 6 boats, "n = 6". The sensor device Si is installed inside the boat so that the device main body (indicator 305 shown in FIG. 3 described later) can be seen by the operator (athlete) of the boat Bi. For example, the sensor device Si is installed near the handle of the boat Bi so that it can be seen by the operator during the race just by slightly moving their eyes. The sensor device Si has a battery that supplies power to each part inside the device.

[0042] Note that the information collection server 201, the reference station 202, and the sensor devices S1 to Sn may be connected via, for example, a closed network. A closed network is a closed network that does not go through the Internet. A closed network is a secure and highly reliable network, and is characterized by being less likely to cause communication delays.

[0043] (Hardware configuration example of the sensor device Si) Next, a hardware configuration example of the sensor device Si will be described.

[0044] FIG. 3 is a block diagram showing a hardware configuration example of the sensor device Si. In FIG. 3, the sensor device Si includes a CPU (Central Processing Unit) 301, a memory 302, a positioning module 303, a communication I / F (Interface) 304, and an indicator 305. Each component is connected by a bus 300.

[0045] Here, the CPU 301 controls the entire sensor device Si. The CPU 301 may have a plurality of cores. The memory 302 has, for example, a ROM (Read Only Memory), a RAM (Random Access Memory), etc. The program stored in the memory 302 is loaded into the CPU 301 to cause the CPU 301 to execute the coded processing.

[0046] The positioning module 303 receives radio waves from GPS satellites and outputs the position information of the sensor device Si. The position information of the sensor device Si is information that specifies a point on the earth, such as latitude and longitude. Further, the positioning module 303 may correct the position information of the sensor device Si using correction data transmitted from the reference station 202 shown in FIG. 2. Further, the positioning module 303 may use a satellite of the quasi-zenith satellite system as a satellite.

[0047] The communication I / F 304 is connected to the network 210 through a communication line and is connected to an external computer (for example, the information collection server 201 shown in FIG. 2) via the network 210. Then, the communication I / F 304 serves as an interface between the network 210 and the inside of the device and controls the input and output of data from an external computer.

[0048] The indicator 305 is a device for giving a warning. The indicator 305 can be lit or blinked in a plurality of colors. The indicator 305 is, for example, an LED (Light Emitting Diode) lamp. The indicator 305 may include a plurality of LED lamps.

[0049] In addition to the above-described components, the sensor device Si may have, for example, an input device, a display, a speaker, a microphone, a camera, an HDD (Hard Disk Drive), an SSD (Solid State Drive), a speed sensor, an acceleration sensor, a short-range wireless communication I / F, a portable recording medium I / F, a portable recording medium, and the like.

[0050] Also, the reference station 202 shown in FIG. 2 can be realized with the same hardware configuration as the sensor device Si. Further, the information collection server 201 shown in FIG. 2 has, for example, a CPU, a memory, an HDD, a communication I / F, a portable recording medium, and the like.

[0051] (Functional configuration example of the sensor device Si) Next, a functional configuration example of the sensor device Si will be described.

[0052] FIG. 4 is a block diagram showing a functional configuration example of the sensor device Si. In FIG. 4, the sensor device Si includes an acquisition unit 401, a calculation unit 402, a determination unit 403, and an output unit 404. The acquisition unit 401 to the output unit 404 are functions of the control unit 400. Specifically, for example, the functions are realized by causing the CPU 301 to execute a program stored in the memory 302 shown in FIG. 3, or by the communication I / F 304. The processing results of each functional unit are stored in the memory 302, for example.

[0053] The acquisition unit 401 acquires the positioning information of its own device. Here, the positioning information of its own device is information indicating the position of the sensor device Si, and is, for example, information specifying a point on the earth such as latitude and longitude. The position of the sensor device Si corresponds to the position of the boat Bi on which the sensor device Si is mounted.

[0054] Specifically, for example, the acquisition unit 401 acquires the positioning information of its own device from the positioning module 303 shown in FIG. 3. The acquired positioning information is, for example, information obtained by correcting the position information of its own device measured by the positioning module 303 using correction data from the reference station 202.

[0055] For example, the positioning module 303 corrects the measured position (latitude, longitude) of its own device using the errors (latitude error, longitude error) included in the correction data from the reference station 202. However, the positioning information may be the position information of its own device measured by the positioning module 303 itself.

[0056] The positioning information of its own device is acquired, for example, at a predetermined time interval. The predetermined time interval can be arbitrarily set and is set to a time of about 0.1 to 0.5 seconds, for example. The acquired positioning information is stored in the memory 302 in the order of acquisition, for example. The acquired positioning information may be stored together with a time stamp.

[0057] The acquisition unit 401 acquires the speed information of the own device. Here, the speed information of the own device is information indicating the speed of the sensor device Si, and represents the direction (moving direction) and speed at which the sensor device Si moves. The speed of the sensor device Si corresponds to the speed of the boat Bi on which the sensor device Si is mounted. The speed information may include information indicating the acceleration of the sensor device Si.

[0058] Specifically, for example, the acquisition unit 401 may acquire the speed information of the own device by calculating the speed of the own device from the change in the position of the own device indicated by the positioning information acquired at a predetermined time interval. More specifically, for example, the acquisition unit 401 calculates the moving distance traveled per unit time (for example, 1 second) from the position (latitude, longitude) of the own device indicated by the positioning information acquired at 0.1-second intervals. Then, the acquisition unit 401 can obtain the speed of the own device by calculating the speed per hour based on the calculated moving distance per unit time. However, the acquisition unit 401 may acquire the speed measured by a speed sensor (not shown). Further, the acquisition unit 401 can obtain the acceleration of the own device from, for example, the difference in the speed (speed per hour) of the own device at a predetermined time interval. However, the acquisition unit 401 may acquire the acceleration measured by an acceleration sensor (not shown).

[0059] Based on the position and speed of the own device mounted on the boat Bi that is accelerating toward the starting line L (for example, see FIG. 5 described later) and the position of the starting line L in a boat race (rowing race), the calculation unit 402 calculates the predicted arrival time t i at which the boat Bi reaches the starting line L. At this time, the calculation unit 402 may calculate the predicted arrival time t i at which the boat Bi reaches the starting line L in consideration of the acceleration of the own device.

[0060] Here, the starting line L is a line (actually an invisible line) that serves as the starting point in a boat race. Information representing the position of the starting line L is stored, for example, in the memory 302. The information representing the position of the starting line L may be obtained from the information collection server 201 shown in FIG. 2, for example. The information representing the position of the starting line L is, for example, the position information (latitude, longitude) of both endpoints of the starting line L.

[0061] Specifically, for example, the calculation unit 402 calculates the distance D from the position of the own device to the position of the starting line L. The position of the own device is the current position specified from the acquired positioning information (latest positioning information). More specifically, for example, the calculation unit 402 calculates the intersection point where the line segment drawn from the position of the own device in the moving direction intersects the starting line L (the line segment connecting both endpoints of the starting line L).

[0062] Then, the calculation unit 402 calculates the distance from the position of the own device to the calculated intersection point as the distance D. Note that when the line segment drawn from the position of the own device in the moving direction does not intersect the starting line L, the calculation unit 402 may not calculate the distance D (unmeasurable). Also, the calculation unit 402 may calculate the shortest distance from the position of the own device to the starting line L as the distance D.

[0063] Next, the calculation unit 402 calculates the predicted arrival time t when the boat Bi reaches the starting line L from the calculated distance D and the speed of the own device. i The speed of the own device is the current speed specified from the acquired speed information (latest speed information). The predicted arrival time t i is represented by, for example, the time of the large clock 520 shown in FIG. 5 described later.

[0064] More specifically, for example, the calculation unit 402 calculates the predicted required time until the boat Bi reaches the start line L by dividing the distance D by the speed of its own device. Also, in a boat race, it is assumed that the boat Bi gradually accelerates immediately after starting its run-up. Therefore, the calculation unit 402 may calculate the predicted required time based on the current speed, acceleration, and distance D.

[0065] For example, the calculation unit 402 may calculate the predicted required time from the current speed, acceleration, and distance D by assuming a uniformly accelerated linear motion at the current acceleration for a certain period of time after starting the run-up (for example, for several seconds after the speed becomes equal to or higher than a predetermined speed). Then, the calculation unit 402 calculates the time when the calculated predicted required time has elapsed from the current time indicated by the second hand of the large clock 520 as the predicted arrival time point t i and may calculate it as such.

[0066] Also, the calculation unit 402 may start calculating the predicted arrival time point t i when the distance D becomes equal to or less than the threshold value α. The threshold value α can be arbitrarily set and is set, for example, to a distance of about several tens of meters (a distance that can adjust the start timing). Specifically, for example, when the distance D becomes equal to or less than the threshold value α, the calculation unit 402 may calculate the predicted required time until the boat Bi reaches the start line L by dividing the distance D by the speed of its own device. Thereby, the calculation unit 402 can start calculating the predicted arrival time point t i after the boat Bi (sensor device Si) has accelerated.

[0067] Also, the calculation unit 402 may start calculating the predicted arrival time point t S when the remaining time until the start time T (start time t i becomes equal to or less than the threshold value β. The threshold value β can be arbitrarily set and is set, for example, to a time of about several hundred milliseconds to several seconds (a time that can adjust the start timing). Specifically, for example, the calculation unit 402 calculates the start time T (start time t SIf the remaining time until becomes equal to or less than the threshold value β, the predicted time required for the boat Bi to reach the starting line L may be calculated by dividing the distance D by the speed of the own device. Thereby, after the boat Bi (sensor device Si) has accelerated, the calculation unit 402 can start the calculation of the arrival prediction time point t i of

[0068] Note that the arrival prediction time point t i may be represented not by the time of the large clock 520 but by the elapsed time from the current time. For example, the arrival prediction time point t i may be represented as "after the predicted time required" using the calculated predicted time required.

[0069] Also, the arrival prediction time point t i may be corrected in consideration of, for example, the wind direction and wind speed at the boat race course. For example, when the boat Bi is running with a headwind towards the starting line L, the calculation unit 402 may perform a correction of adding the time corresponding to the wind speed to the arrival prediction time point t i . Also, when the boat Bi is running with a tailwind towards the starting line L, the calculation unit 402 may perform a correction of subtracting the time corresponding to the wind speed from the arrival prediction time point t i . Information for specifying the wind direction and wind speed at the boat race course is acquired from, for example, the information collection server 201.

[0070] The determination unit 403 determines whether the calculated arrival prediction time point t i is within the start time T of the boat race. The start time T is determined according to the boat race and is the period from the start time t S to the time t E after a specified time has elapsed. The specified time is, for example, 1 second. The start time T is represented by, for example, the time of the large clock 520.

[0071] For example, assuming the specified time is 1 second, the start time T is from the time when the second hand of the large clock 520 indicates 0 o'clock (start time t S ) to the time when it indicates 1 o'clock (time t Eis the period up to. Also, the start time T may be represented by the elapsed time from the current time rather than the time of the large clock 520. For example, if the time from the current time to the start time t S is "x seconds", the start time T may be represented as "the period from x seconds later to (x + 1) seconds later".

[0072] Note that the start time T may be obtained from, for example, the information collection server 201. Also, the start time T may be obtained by communicating with the large clock 520. Also, the start time T may be preset in the sensor device Si.

[0073] Specifically, for example, the determination unit 403 determines that when the predicted arrival time t i is before the start time t S the predicted arrival time t i is before the start time T. Also, the determination unit 403 determines that when the predicted arrival time t i is after the time t E the predicted arrival time t i is after the start time T. Also, the determination unit 403 determines that when the predicted arrival time t i is within the period from the start time t S to the time t E the predicted arrival time t i is within the start time T.

[0074] When the predicted arrival time t i is before the start time T, the output unit 404 outputs a first warning to the operator of the boat Bi. Here, the first warning is, for example, to notify that flying will occur if it continues. Specifically, for example, the output unit 404 may output the first warning by lighting or flashing the indicator 305 shown in FIG. 3 in the first color. The first color can be arbitrarily set and is set to, for example, red.

[0075] Also, when the predicted arrival time t iIf it is after the start time T, a second warning different from the first warning is output to the operator of the boat Bi. Here, the second warning notifies, for example, that the boat will be late if it continues like this. Specifically, for example, the output unit 404 may output the second warning by lighting or flashing the indicator 305 in a second color different from the first color. The second color can be arbitrarily set and is set to blue, for example.

[0076] The LED lamp of the indicator 305 for outputting the second warning is the same as, for example, the LED lamp for outputting the first warning. By outputting the first warning and the second warning with one LED lamp, the number of lamps that the operator (athlete) needs to check can be reduced. However, the LED lamp of the indicator 305 for outputting the second warning may be different from the LED lamp for outputting the first warning.

[0077] The sensor device Si is installed near the handle of the boat Bi, for example, so that the operator (athlete) of the boat Bi can see the indicator 305. Therefore, the operator (athlete) of the boat Bi can visually recognize the indicator 305 even while operating the boat Bi. Note that the indicator 305 may be provided separately from the sensor device Si main body and may be connected to the sensor device Si by wire or wirelessly. Also in this case, the indicator 305 is installed at a position that is easy for the operator (athlete) of the boat Bi to see, such as near the handle inside the boat or the shield part of the helmet worn by the athlete.

[0078] Also, when the predicted arrival time t i is before the start time T, the output unit 404 may output the first warning by flashing the indicator 305 in the first color at a period P1 corresponding to the time difference between the predicted arrival time t i and the start time t S . The period P1 is set to be longer as the time difference between the predicted arrival time t i and the start time t S becomes longer.

[0079] Further, the output unit 404 may change the luminance and chroma of the first color that turns on or blinks the indicator 305 according to the time difference between the predicted arrival time t i and the start time t S For example, the output unit 404 may change the luminance and chroma of the first color that turns on or blinks the indicator 305 according to the time difference between the predicted arrival time t i and the start time t S Specifically, the longer the time difference between the predicted arrival time t

[0080] Further, when the predicted arrival time t i is after the start time T, the output unit 404 may output a second warning by blinking the indicator 305 in a second color at a period P2 according to the time difference between the time t E (the time when a specified time has elapsed since the start time t S ) and the predicted arrival time t i The period P2 is set to be longer as the time difference between the time t E and the predicted arrival time t i becomes longer, for example.

[0081] Further, the output unit 404 may change the luminance and chroma of the second color that turns on or blinks the indicator 305 according to the time difference between the time t E and the predicted arrival time t i For example, the output unit 404 may increase the luminance and chroma of the second color as the time difference between the time t E and the predicted arrival time t i becomes longer.

[0082] Further, when the predicted arrival time t i is before the start time T, the output unit 404 may, between the predicted arrival time t i and the start time t SIt may be determined whether the time difference from [a certain time] is equal to or greater than a first threshold value. The first threshold value can be arbitrarily set, and is set to about 0.1 to 0.3 seconds, for example. Here, when the time difference is less than the first threshold value, the output unit 404 may output a first warning by lighting the indicator 305 in a first color. On the other hand, when the time difference is equal to or greater than the first threshold value, the output unit 404 may output a first warning by flashing the indicator 305 in the first color.

[0083] Also, when the predicted arrival time t i is after the start time T, the output unit 404 may determine whether the time difference between the time t E (the time when a specified time has elapsed since the start time t S ) and the predicted arrival time t i is equal to or greater than a second threshold value. The second threshold value can be arbitrarily set, and is set to about 0.1 to 0.3 seconds, for example. Here, when the time difference is less than the second threshold value, the output unit 404 may output a second warning by lighting the indicator 305 in a second color. On the other hand, when the time difference is equal to or greater than the second threshold value, the output unit 404 may output a second warning by flashing the indicator 305 in the second color.

[0084] Examples of the output of each warning (the first warning, the second warning) by lighting or flashing the indicator 305 will be described later with reference to FIGS. 7 and 10.

[0085] Also, the output unit 404 may output information representing the distance D from the position of its own device to the start line L. Specifically, for example, the output unit 404 may light or flash the indicator 305 in a color corresponding to the distance D. This distance D is, for example, the shortest distance from the position of its own device to the start line L. Also, this distance D may be the distance when the boat Bi sails straight in the moving direction.

[0086] The LED lamp that lights up or blinks in a color according to the distance D may be the same as or different from the LED lamp for outputting each warning (the first warning, the second warning). The color according to the distance D can be arbitrarily set. However, the color according to the distance D is preferably a color different from the first color and the second color. A specific example of the color according to the distance D will be described later with reference to FIG. 5.

[0087] Further, the sensor device Si may have a display (for example, the display 800 shown in FIG. 8 described later). In this case, the output unit 404 may display each warning (the first warning, the second warning) on the display 800. The sensor device Si is installed near the handle of the boat Bi, for example, so that the display 800 can be seen by the operator (athlete) of the boat Bi. Therefore, the operator (athlete) of the boat Bi can visually recognize the display 800 even while operating the boat Bi. Note that the display 800 may be provided separately from the sensor device Si main body and may be connected to the sensor device Si by wire or wirelessly. Also in this case, the display 800 is installed at a position that is easy for the operator (athlete) of the boat Bi to see, such as near the handle inside the boat or the shield part of the helmet worn by the athlete.

[0088] Specifically, for example, when the predicted arrival time t i is before the start time T, the output unit 404 outputs the first warning to the display 800. More specifically, for example, when the predicted arrival time t i is before the start time T, the output unit 404 may output the first warning by displaying a warning message (the first message) indicating that it will fly as it is on the display 800. At this time, the output unit 404 may display information representing the time difference between the predicted arrival time t i and the start time t S on the display 800.

[0089] Further, the output unit 404 is at the predicted arrival time t iIf it is after the start time T, a second warning is output to the display 800. More specifically, for example, the output unit 404 predicts the arrival time t i If it is after the start time T, a warning message (second message) indicating that there will be a delay if it remains like this may be displayed on the display 800 to output the second warning. At this time, the output unit 404 uses the time t E (the time when a specified time has elapsed since the start time t S ) and the arrival prediction time t i Information representing the time difference from may be displayed on the display 800.

[0090] Examples of output of each warning (first warning, second warning) by displaying a warning message will be described later with reference to FIGS. 8 and 11.

[0091] In addition, the output unit 404 may display information representing the distance D from the position of its own device to the start line L on the display 800. Also, the sensor device Si may have a speaker (not shown). In this case, the output unit 404 may output a warning sound and a warning message corresponding to each warning (first warning, second warning) from the speaker of its own device as voice.

[0092] Specifically, for example, when the arrival prediction time t i is before the start time T, the output unit 404 outputs a first warning to the speaker. Also, when the arrival prediction time t i is after the start time T, the output unit 404 outputs a second warning to the speaker. More specifically, for example, when the arrival prediction time t i is before the start time T, the output unit 404 outputs a slow-tempo warning sound from the speaker, and when the arrival prediction time t i is after the start time T, the output unit 404 may output a fast-tempo warning sound from the speaker.

[0093] The speaker may be provided separately from the main body of the sensor device Si, for example, and may be connected to the sensor device Si by wire or wirelessly. In this case, the speaker is installed at a position where the operator (athlete) of the boat Bi can easily hear the sound, such as near the handle inside the boat or at the part where the ear touches inside the helmet worn by the athlete.

[0094] Note that the functional units (acquisition unit 401 to output unit 404) of the sensor device Si may be realized by, for example, the information collection server 201 shown in FIG. 2. In this case, the sensor device Si outputs each warning (first warning, second warning, etc.) according to the control of the information collection server 201, for example. However, information (positioning information, speed information, etc. of the sensor device Si) may be transferred between the sensor device Si and the information collection server 201, resulting in a processing delay. For this reason, it is preferable to realize the functional units (acquisition unit 401 to output unit 404) by the sensor device Si mounted on the boat Bi.

[0095] (An example of a boat race course) Next, with reference to FIG. 5, a boat race course where a boat race (motorboat racing) is held will be described.

[0096] FIG. 5 is an explanatory diagram showing an example of a boat race course. In FIG. 5, the boat race course 500 is a facility where a boat race (motorboat racing) is held. The boat race course 500 is provided with a first turn mark 501, a second turn mark 502, wave dissipating devices 503, 504, etc., and a race course 510 is formed with a length of 600 m per lap.

[0097] In the boat race, after passing the start line L, the first turn mark 501 and the second turn mark 502 are turned in order, and the race course 510 is completed three laps (1,800 m) to determine the finishing order. A large clock (starting signal clock) 520 is provided at the boat race course 500.

[0098] The large clock 520 is a clock for notifying the start time T. The large clock 520 has, for example, a minute hand that makes one full rotation in one minute and a second hand that makes one full rotation in 12 seconds. The large clock 520 is installed, for example, near the water surface at the center of the stand and faces the center of the 40m line in front of the start line L.

[0099] In addition, the boat race course 500 is provided with a center pole 511 and marker poles 512 to 515. The center pole 511 is a pole on the racing water surface on the start line L of the boat race. The marker pole 512 is a pole located 5m from the center pole 511 towards the second turn mark 502.

[0100] The marker pole 513 is a pole located 45m from the center pole 511 towards the second turn mark 502. The marker pole 514 is a pole located 80m from the center pole 511 towards the second turn mark 502. The marker pole 515 is a pole located 100m from the center pole 511 towards the second turn mark 502.

[0101] The operator (athlete) of the boat Bi starts while running on the water after leaving the pit and waiting. At this time, the operator (athlete) of the boat Bi can measure the start timing using, for example, the marker poles 512 to 515 as a guide.

[0102] In addition, the sensor device Si mounted on the boat Bi can light up the indicator 305 (see Figure 3) in a color corresponding to the distance D from its own position to the start line L. For example, when the distance D is 150m or more, the sensor device Si lights up the indicator 305 in cyan. Also, when the distance D is 100m or more and less than 150m, the sensor device Si lights up the indicator 305 in green.

[0103] Further, when the distance D is 80 m or more and less than 100 m, the sensor device Si lights up the indicator 305 in purple. Further, when the distance D is 45 m or more and less than 80 m, the sensor device Si lights up the indicator 305 in yellow. Further, when the distance D is 5 m or more and less than 45 m, the sensor device Si lights up the indicator 305 in orange. Further, when the distance D is less than 5 m, the sensor device Si lights up the indicator 305 in white.

[0104] Thereby, the operator (athlete) of the boat Bi can intuitively grasp how much distance remains to the starting line L just by checking the indicator 305 installed inside the boat, for example, without looking at the marking poles 512 to 515, which makes it easier to measure the timing of the start.

[0105] (Output examples of each warning) Next, output examples of each warning (the first warning, the second warning) by the sensor device Si will be described. First, the output example of the first warning will be described with reference to FIGS. 6 to 8.

[0106] FIG. 6 is an explanatory diagram (part 1) showing an example of the boat Bi during the approach run. In FIG. 6, the boat B1 during the approach run that has reached 40 m in front of the starting line L is shown.

[0107] The sensor device S1 mounted on the boat B1 calculates the predicted arrival time t1 at which the boat B1 reaches the starting line L based on the position and speed of its own device and the position of the starting line L. Then, when the predicted arrival time t1 is before the start time T, the sensor device S1 outputs the first warning to the operator of the boat B1.

[0108] Here, the speed of the boat B1 (sensor device S1) is set to "80 km / h", and the current time is the start time T (start time t SSet it to 2 seconds before. The distance D from the position of boat B1 (sensor device S1) to the position of the start line L is "40 m". Here, it is assumed that boat B1 moves in a uniform linear motion toward the start line L.

[0109] In this case, the predicted arrival time t1 when boat B1 reaches the start line L is "1.8 seconds later". The start time T (start time t S ) is "2 seconds later", and the predicted arrival time t1 is before the start time T. Therefore, the sensor device S1 outputs a first warning by lighting or flashing the indicator 305 in a first color (for example, red).

[0110] FIG. 7 is an explanatory diagram (part 1) showing an output example of the first warning. In FIG. 7, since boat B1 (sensor device S1) is located 40 m in front of the start line L, the indicator 305 is lit in orange. Here, as described in FIG. 6, when the predicted arrival time t1 is before the start time T, (7-1) the indicator 305 lights up in red, or (7-2) the indicator 305 flashes in red.

[0111] Thereby, the operator (athlete) of boat B1 can intuitively grasp that they will be flying if they continue at this pace. For example, when the operator (athlete) of boat B1 confirms that the indicator 305 lights up or flashes in red, they can immediately release the throttle lever to reduce the output of the motor and adjust the timing to start.

[0112] Also, when the sensor device S1 causes the indicator 305 to flash in red, the indicator 305 can be flashed at a period P1 corresponding to the time difference between the predicted arrival time t1 and the start time t S Thereby, the operator (athlete) of boat B1 can judge how much to reduce the output of the motor to delay the start based on the length of the period P1 at which the indicator 305 flashes.

[0113] Here, an output example of the first warning when the sensor device Si has a display will be described.

[0114] FIG. 8 is an explanatory diagram (part 2) showing an output example of the first warning. In FIG. 8, since the boat B1 (sensor device S1) is located 40 m in front of the start line L, the indicator 305 is lit in orange. However, the form of the sensor device S1 shown in FIG. 8 on the main body surface is different from that of the sensor device S1 shown in FIG. 7.

[0115] Here, as described with reference to FIG. 6, when the predicted arrival time t1 is earlier than the start time T, the sensor device S1, for example, displays a warning message 810 on the display 800. The warning message 810 is a message for notifying that it will fly as it is. The "0.2 seconds" included in the warning message 810 represents the time difference between the predicted arrival time t1 and the start time t S and.

[0116] As a result, the operator (athlete) of the boat B1 can grasp that it will fly if it continues at this speed. Also, since the operator (athlete) of the boat B1 can find that it will reach the start line L 0.2 seconds earlier than the start time t S if it continues at this speed, it becomes easier to determine how much to reduce the output of the motor to delay the start.

[0117] Next, an output example of the second warning will be described with reference to FIGS. 9 to 11.

[0118] FIG. 9 is an explanatory diagram (part 2) showing an example of the boat Bi during the approach run. In FIG. 9, the boat B2 during the approach run that has reached 70 m in front of the start line L is shown.

[0119] The sensor device S2 mounted on the boat B2 calculates the predicted arrival time t2 at which the boat B2 reaches the starting line L based on the position and speed of its own device and the position of the starting line L. Then, when the predicted arrival time t2 is after the start time T, the sensor device S1 outputs a second warning to the operator of the boat B2.

[0120] Here, the speed of the boat B2 (sensor device S2) is set to "56 km / h", and the current time is set to 3 seconds before the start time T (start time t S ). The distance D from the position of the boat B2 (sensor device S2) to the position of the starting line L is "70 m". Also, here, it is assumed that the boat B2 moves in a uniform linear motion toward the starting line L.

[0121] In this case, the predicted arrival time t2 at which the boat B2 reaches the starting line L is "4.5 seconds later". The start time T (start time t S to time t E ) is between "3 seconds later and 4 seconds later", and the predicted arrival time t2 is after the start time T. Therefore, the sensor device S1 outputs the second warning by lighting or flashing the indicator 305 in a second color (for example, blue).

[0122] FIG. 10 is an explanatory diagram (part 1) showing an example of output of the second warning. In FIG. 10, since the boat B2 (sensor device S2) is located 70 m in front of the starting line L, the indicator 305 is lit in yellow. Here, as described in FIG. 9, when the predicted arrival time t2 is after the start time T, (10-1) the indicator 305 lights up in blue, or (10-2) the indicator 305 flashes in blue.

[0123] As a result, the operator (athlete) of boat B2 can intuitively understand that if they continue at this speed, they will start late. For example, when the operator (athlete) of boat B2 confirms that the indicator 305 lights up or blinks blue, they can immediately grasp the throttle lever and increase the motor output to adjust the timing of starting.

[0124] Also, when the sensor device S2 blinks the indicator 305 blue, it can blink the indicator 305 at a period P2 according to the time difference between the time t E (the time when a specified time has elapsed since the start time t S and the predicted arrival time t2). As a result, the operator (athlete) of boat B2 can determine how much to increase the motor output to start earlier based on the length of the period P2 during which the indicator 305 blinks.

[0125] Here, an example of the output of the second warning when the sensor device Si has a display will be described.

[0126] FIG. 11 is an explanatory diagram (part 2) showing an example of the output of the second warning. In FIG. 11, since boat B2 (sensor device S2) is located 70 m in front of the start line L, the indicator 305 is lit yellow. However, the sensor device S2 shown in FIG. 11 has a different form on the main body surface from the sensor device S2 shown in FIG. 10.

[0127] Here, as described with reference to FIG. 9, when the predicted arrival time t2 is after the start time T, the sensor device S2, for example, displays a warning message 1110 on the display 800. The warning message 1110 is a message for notifying that a start delay will occur if the current situation continues. The "0.5 seconds" included in the warning message 1110 represents the time difference between the time t E (the time when a specified time has elapsed since the start time t S and the predicted arrival time t1).

[0128] As a result, the operator (athlete) of boat B2 can understand that if they continue at this speed, they will start late. Also, since the operator (athlete) of boat B2 can see that they will reach the starting line L 0.5 seconds later than time t E it becomes easier to determine how much the motor output should be increased to start earlier.

[0129] (Operation example of the positioning of the start support system 200) Next, with reference to FIG. 12, an operation example of the positioning of the start support system 200 will be described.

[0130] FIG. 12 is a sequence diagram showing an operation example of the positioning of the start support system 200. In the sequence diagram of FIG. 12, first, the reference station 202 measures its own position (step S1201). Next, the reference station 202 generates correction data for correcting the measured position based on the installation position information of its own station (step S1202).

[0131] The installation position information of its own station indicates the installation position of its own station (for example, latitude, longitude). The correction data includes, for example, the error (latitude error, longitude error) between the installation position of the reference station 202 indicated by the installation position information of its own station and the position of its own station measured by the reference station 202.

[0132] Then, the reference station 202 transmits the generated correction data to the information collection server 201 (step S1203). When the information collection server 201 receives the correction data from the reference station 202, it transmits the received correction data to the sensor device Si (step S1204).

[0133] When the sensor device Si receives correction data from the information collection server 201, it updates the latest correction data (step S1205). Next, the sensor device Si measures its own position (step S1206). Then, the sensor device Si generates positioning information of its own device by correcting the measured position of its own device using the latest correction data (step S1207). The positioning information indicates, for example, the corrected position (latitude, longitude) of the sensor device Si.

[0134] Thereby, the start support system 200 can improve the positioning accuracy of each sensor device Si using the correction data generated by the reference station 202. The processes of steps S1201 to S1207 are repeatedly executed at a predetermined timing. For example, the processes of steps S1201 to S1205 are executed at 1-second intervals. Also, the processes of steps S1206 and S1207 are executed at 0.1-second intervals.

[0135] The generated positioning information is used, for example, in the start support process in the sensor device Si (see, for example, FIG. 13 described later). Also, the generated positioning information may be transmitted from the sensor device Si to the information collection server 201. Thereby, in the information collection server 201, it is possible to grasp the positions of the respective sensor devices Si.

[0136] (Start support processing procedure of sensor device Si) Next, with reference to FIG. 13, the start support processing procedure of the sensor device Si will be described. The start support process of the sensor device Si is periodically executed at a predetermined time interval (for example, 0.1 second).

[0137] FIG. 13 is a flowchart showing an example of the start support processing procedure of the sensor device Si. In the flowchart of FIG. 13, first, the sensor device Si acquires positioning information indicating its own position (step S1301). The acquired positioning information is information indicating the current position of the sensor device Si, and is, for example, the latest positioning information generated in step S1207 shown in FIG. 12.

[0138] Next, the sensor device Si acquires correction data for correcting the measured position (step S1302). The acquired correction data is, for example, the latest correction data updated in step S1205 shown in FIG. 12. Then, the sensor device Si corrects the position of its own device indicated by the acquired positioning information using the acquired correction data (step S1303).

[0139] Next, the sensor device Si acquires speed information of its own device (step S1304). The acquired speed information is information indicating the current speed of the sensor device Si. Specifically, for example, the sensor device Si acquires the speed information of its own device by calculating the speed of its own device from the change in position of its own device indicated by the two latest positioning information acquired at a predetermined time interval (for example, 0.1 second).

[0140] Next, the sensor device Si calculates the distance D from the corrected position of its own device to the position of the start line L (step S1305). Then, the sensor device Si lights the indicator 305 shown in FIG. 3 with a color corresponding to the calculated distance D (step S1306). Next, the sensor device Si calculates the arrival prediction time t when the boat Bi reaches the start line L from the calculated distance D and the speed of its own device indicated by the acquired speed information i (step S1307).

[0141] Then, the sensor device Si determines whether the calculated arrival prediction time t i is within the start time T of the boat race (step S1308). Here, when the arrival prediction time t i is within the start time T of the boat race (step S1308: Yes), the sensor device Si ends the series of processes according to this flowchart.

[0142] Also, the arrival prediction time t iIf it is before the start time T (step S1308: before), the sensor device Si outputs a first warning to the operator of the boat Bi by lighting or flashing the indicator 305 in the first color (step S1309). The first warning, for example, notifies that flying will occur as it is. Then, the sensor device Si ends a series of processes according to this flowchart.

[0143] Also, at the predicted arrival time t i If it is after the start time T (step S1308: after), the sensor device Si outputs a second warning different from the first warning to the operator of the boat Bi by lighting or flashing the indicator 305 in the second color (step S1310). The second warning, for example, notifies that being late will occur as it is. Then, the sensor device Si ends a series of processes according to this flowchart.

[0144] Thereby, the sensor device Si can support the start of the operator (athlete) of the boat Bi during the run-up in the boat race and suppress the occurrence of flying and being late.

[0145] In step S1309, when flashing the indicator 305 in the first color, the sensor device Si may flash it at a period P1 according to the time difference between the predicted arrival time t i and the start time t S Also, in step S1310, when flashing the indicator 305 in the second color, at the time t E (the time when a specified time has elapsed from the start time t S ) and the predicted arrival time t i it may flash at a period P2 according to the time difference.

[0146] As described above, according to the sensor device Si according to the embodiment, in the boat race, based on the position and speed of its own device mounted on the boat Bi running towards the starting line L and the position of the starting line L, the predicted arrival time t when the boat Bi reaches the starting line Li can be calculated. Then, according to the sensor device Si, at the predicted arrival time t calculated i if it is before the start time T of the boat race, a first warning is output to the operator of the boat Bi, and at the predicted arrival time t i if it is after the start time T, a second warning different from the first warning can be output to the operator of the boat Bi. The start time T is the time t S after a specified time (for example, 1 second) has elapsed from the start time t E until. The first warning is, for example, to inform that it will fly as it is. The second warning is, for example, to inform that it will be late as it is.

[0147] Thereby, the sensor device Si can suppress the occurrence of flying and being late by assisting the start of each athlete (the operator of the boat Bi) during the run-up in the boat race. For example, the sensor device Si can output different warnings depending on whether the predicted arrival time t i is before or after the start time T of the boat race, making it possible to determine whether it will fly or be late as it is.

[0148] Also, according to the sensor device Si, when the predicted arrival time t i is before the start time T of the boat race, the first warning can be output by lighting or flashing the indicator 305 of the device itself in a first color. Also, according to the sensor device Si, when the predicted arrival time t i is after the start time T, the second warning can be output by lighting or flashing the indicator 305 in a second color different from the first color.

[0149] As a result, the sensor device Si can use the in-boat indicator 305 provided in a place where it is easy for the racers during the race to see, to notify whether it will result in a flying start or a late start as it is. At this time, the sensor device Si can make it possible to intuitively grasp whether it will result in a flying start or a late start as it is, by outputting each warning (the first warning, the second warning) in a different mode (color). Note that the LED lamps of the indicator 305 for outputting each warning (the first warning, the second warning) may be the same or different. By outputting the first warning and the second warning with one LED lamp, the number of lamps that the operator (racer) needs to check can be suppressed.

[0150] Also, according to the sensor device Si, the indicator 305 of the own device can be turned on or blinked in a color corresponding to the distance D from the position of the own device to the position of the start line L.

[0151] As a result, the sensor device Si can use the in-boat indicator 305 provided in a place where it is easy for the racers during the race to see, to make it possible to intuitively grasp how much distance remains until the start line L. Note that the LED lamp of the indicator 305 that is turned on or blinked in a color corresponding to the distance D may be the same as or different from the LED lamps for outputting each warning (the first warning, the second warning). However, when it is the same as the LED lamps for outputting each warning (the first warning, the second warning), the sensor device Si gives priority to outputting each warning (the first warning, the second warning).

[0152] Also, according to the sensor device Si, when the predicted arrival time t i is before the start time T of the boat race, the indicator 305 is blinked in the first color at a period P1 corresponding to the time difference between the predicted arrival time t i and the start time t S to output the first warning. Also, according to the sensor device Si, when the predicted arrival time t i is after the start time T, the time t E (start time t Sthe time when a specified period has elapsed) and the predicted arrival time point t i By blinking the indicator 305 in the second color at the period P2 according to the time difference from i , a second warning can be output.

[0153] Accordingly, the sensor device Si can determine how much earlier or later than the start time T based on the lengths of the periods (period P1, period P2) at which the indicator 305 blinks. For example, the player can determine how much to reduce the output of the motor to delay the start based on the length of the period P1 at which the indicator 305 blinks. Also, the player can determine how much to increase the output of the motor to start earlier based on the length of the period P2 at which the indicator 305 blinks.

[0154] Also, according to the sensor device Si, when the predicted arrival time point t i is before the start time T of the boat race, a warning message (first message) indicating that it will be flying as it is can be output by displaying it on the display 800 (see FIG. 8) of the own device. Also, according to the sensor device Si, when the predicted arrival time point t i is after the start time T, a warning message (second message) indicating that it will be late as it is can be output by displaying it on the display (see FIG. 11).

[0155] Accordingly, the sensor device Si can notify whether it will fly or be late as it is by using the display 800 inside the boat, which is provided in a place where the player during the race can easily see it.

[0156] Also, according to the sensor device Si, a warning message (first message) including the time difference between the predicted arrival time point t i and the start time t S can be displayed. Also, according to the sensor device Si, the time t E (start time t S(the time when a specified time has elapsed) and the predicted arrival time point t i It is possible to display a warning message (the second message) including the time difference from

[0157] Thus, the sensor device Si can make it possible to grasp, by specific numerical values (for example, "0.2 seconds early", "0.5 seconds late", etc.), how early or how late it will reach the starting line L if it continues at this pace.

[0158] Further, according to the sensor device Si, at a predetermined time interval, it acquires positioning information indicating the current position of its own device and speed information indicating the current speed of its own device, and based on the current position of its own device indicated by the acquired positioning information and the current speed of its own device indicated by the speed information, and the position of the starting line L, the predicted arrival time point t i can be calculated.

[0159] Thus, the sensor device Si can, for example, determine the possibility of flying or starting late at various positions during the approach run towards the starting line L, and output each warning (the first warning, the second warning) to the athlete.

[0160] Further, according to the sensor device Si, when the predicted arrival time point t i is before the start time T, it is possible to determine whether the time difference between the predicted arrival time point t i and the start time t S is equal to or greater than a first threshold. And according to the sensor device Si, when the time difference is less than the first threshold, it can output the first warning by lighting the indicator 305 in a first color. Also, according to the sensor device Si, when the time difference is equal to or greater than the first threshold, it can output the first warning by flashing the indicator 305 in the first color.

[0161] Thus, the sensor device Si can light the indicator 305 in the boat to notify that it will fly as it is. Also, the sensor device Si, the start time T (the start time t SWhen the deviation from [the reference] is large, the indicator 305 can be blinked to notify that a large trajectory correction is required to avoid flying.

[0162] Also, according to the sensor device Si, at the predicted arrival time t i if it is after the start time T, the time difference between the time t E and the predicted arrival time t i can be determined whether it is equal to or greater than a second threshold value. And, according to the sensor device Si, when the time difference is less than the second threshold value, a second warning can be output by lighting the indicator 305 in a second color. Also, according to the sensor device Si, when the time difference is equal to or greater than the second threshold value, a second warning can be output by blinking the indicator 305 in a second color.

[0163] Thereby, the sensor device Si can light the indicator 305 in the boat to notify that it will be late if it continues like this. Also, when the deviation from the start time T (time t E ) is large, the indicator 305 can be blinked to notify that a large trajectory correction is required to avoid being late.

[0164] From these things, according to the sensor device Si, for each athlete running towards the starting line L during the approach run, it is possible to notify whether flying or being late will occur if it continues like this, and appropriately guide the athlete to pass the starting line L within the determined time, and suppress the occurrence of flying and being late. For example, conventionally, the athlete timed the start timing while visually observing the marker poles 512 to 515 and the large clock 520 shown in FIG. 5. On the other hand, according to the sensor device Si, each athlete can grasp the remaining distance to the starting line L and the situation likely to result in flying or being late only by checking the indicator 305 and the display 800 in the boat, and can start with high accuracy.

[0165] In addition, according to the sensor device Si, by suppressing the occurrence of flying and being late, the number of refund cases of boat tickets can be reduced, thereby reducing the loss of sales on the side of the boat race operator. Also, according to the sensor device Si, by reducing the number of refund cases of boat tickets, it is possible to prevent annoyance to the purchasers of boat tickets and prevent the loss of the fun of the boat race. Further, according to the sensor device Si, by suppressing the occurrence of flying and being late, it is possible to reduce the pressure on the players regarding the flying penalty and enable them to exhibit their original strength.

[0166] This start support method can be applied not only to boat races but also to competitions such as yacht races that adopt the flying start method.

[0167] Note that the start support method described in this embodiment can be realized by executing a pre-prepared program on a computer such as a personal computer or a workstation. This start support program is recorded on a computer-readable recording medium such as a hard disk, a flexible disk, a CD (Compact Disc)-ROM, a DVD (Digital Versatile Disk), a USB (Universal Serial Bus) memory, etc., and is executed by being read from the recording medium by a computer. Also, this start support program may be distributed via a network such as the Internet.

[0168] Also, the sensor device Si described in this embodiment can also be realized by an application-specific IC such as a standard cell or a structured ASIC (Application Specific Integrated Circuit), or a PLD (Programmable Logic Device) such as an FPGA.

[0169] Regarding the above-described embodiment, the following additional remarks are disclosed.

[0170] (Appendix 1) In a competition that starts with a running start on water, based on the position and speed of the self-device mounted on the boat during the running start towards the starting line and the position of the starting line, calculate the predicted arrival time when the boat reaches the starting line. When the calculated predicted arrival time is earlier than the start time of the competition, output a first warning to the operator of the boat. When the predicted arrival time is later than the start time, output a second warning different from the first warning to the operator of the boat. A start assistance device characterized by having a control unit.

[0171] (Appendix 2) The control unit When the predicted arrival time is earlier than the start time of the competition, output the first warning by lighting or flashing an indicator in a first color. When the predicted arrival time is later than the start time, output the second warning by lighting or flashing the indicator in a second color different from the first color. The start assistance device according to Appendix 1, characterized by the above.

[0172] (Appendix 3) The control unit Light or flash the indicator in a color corresponding to the distance from the position of the self-device to the position of the starting line. The start assistance device according to Appendix 1 or 2, characterized by the above.

[0173] (Appendix 4) The start time is the period from the start time to the time when a specified time has elapsed. The control unit When the predicted arrival time is earlier than the start time, output the first warning by flashing the indicator in the first color at a period corresponding to the time difference between the predicted arrival time and the start time. When the predicted arrival time is after the start time, the second warning is output by blinking the indicator in the second color at a period corresponding to the time difference between the time when the specified time has elapsed and the predicted arrival time. The start support device according to supplementary note 2, characterized by the above.

[0174] (Supplementary note 5) The control unit When the predicted arrival time is before the start time, the first warning is output to the display. When the predicted arrival time is after the start time, the second warning is output to the display. The start support device according to supplementary note 1, characterized by the above.

[0175] (Supplementary note 6) The control unit When the predicted arrival time is before the start time, the first warning is output to the speaker. When the predicted arrival time is after the start time, the second warning is output to the speaker. The start support device according to supplementary note 1, characterized by the above.

[0176] (Supplementary note 7) The control unit When the predicted arrival time is before the start time, the first warning is output by displaying a first message indicating that flying will occur as it is on the display. When the predicted arrival time is after the start time, the second warning is output by displaying a second message indicating that there will be a delay as it is on the display. The start support device according to supplementary note 5, characterized by the above.

[0177] (Supplementary note 8) The start time is the period from the start time to the time when the specified time has elapsed. The first message includes the time difference between the predicted arrival time and the start time. The start support device according to appended note 7, wherein the second message includes a time difference between the time when the specified time has elapsed and the predicted arrival time point.

[0178] (Appended note 9) The control unit acquires positioning information indicating the current position of the own device and speed information indicating the current speed of the own device at predetermined time intervals, and calculates the predicted arrival time point based on the current position of the own device indicated by the acquired positioning information, the current speed of the own device indicated by the speed information, and the position of the start line. The start support device according to any one of appended notes 1 to 8, characterized in that.

[0179] (Appended note 10) The first warning is to notify that flying will occur as it is, and the second warning is to notify that being late will occur as it is. The start support device according to any one of appended notes 1 to 9, characterized in that.

[0180] (Appended note 11) The competition is a boat race, and the start support device according to any one of appended notes 1 to 10, characterized in that.

[0181] (Appended note 12) In a competition that starts while running on water, a computer mounted on a boat that is running towards the start line calculates a predicted arrival time point at which the boat reaches the start line based on the position and speed of the computer and the position of the start line, and when the calculated predicted arrival time point is earlier than the start time of the competition, outputs a first warning to the operator of the boat, and when the predicted arrival time point is later than the start time, outputs a second warning different from the first warning to the operator of the boat. A start support method characterized by executing the process.

[0182] (Appendix 13) In a competition that starts with a running start on water, a computer mounted on a boat that is running towards the starting line during the running start, Based on the position and speed of the computer and the position of the starting line, calculate the predicted arrival time when the boat reaches the starting line, If the calculated predicted arrival time is earlier than the start time of the competition, output a first warning to the operator of the boat, If the predicted arrival time is later than the start time, output a second warning different from the first warning to the operator of the boat. A start support program characterized by executing the process.

Explanation of Signs

[0183] 101, 101a, 101b, 101c Start support device 102, 103, 104 Boat 110 Starting line 120 Clock 130 Start time 131 First warning 132 Second warning 200 Start support system 201 Information collection server 202 Reference station 210 Network 300 Bus 301 CPU 302 Memory 303 Positioning module 304 Communication I / F 305 Indicator 400 Control unit 401 Acquisition unit 402 Calculation unit 403 Judgment unit 404 Output unit 500 Boat race course 501 First turn mark 502 Second turn mark 503, 504 Wave dissipating device 510 Race course 511 Center Pole 512, 513, 514, 515 Sign Poles 520 Big Clock 800 Display 810, 1110 Warning Messages B1~Bn, Bi Boats S1~Sn, Si Sensor Devices

Claims

1. In a competition that starts with a run-up on water, based on the position and speed of the self-device mounted on the boat during the run-up towards the starting line and the position of the starting line, calculate the predicted arrival time when the boat reaches the starting line. If the calculated predicted arrival time is earlier than the start time of the competition, output a first warning to the operator of the boat. If the predicted arrival time is later than the start time, output a second warning different from the first warning to the operator of the boat. A start assistance device characterized by having a control unit.

2. The control unit When the predicted arrival time is earlier than the start time of the competition, output the first warning by lighting or flashing an indicator in a first color. When the predicted arrival time is later than the start time, output the second warning by lighting or flashing the indicator in a second color different from the first color. The start assistance device according to claim 1, characterized in that.

3. The control unit The start assistance device according to claim 1, characterized in that the indicator is lit or flashed in a color corresponding to the distance from the position of the self-device to the position of the starting line.

4. The start time is the period from the start time to the time when a specified time has elapsed. The control unit When the predicted arrival time is earlier than the start time, output the first warning by flashing the indicator in the first color at a period corresponding to the time difference between the predicted arrival time and the start time. When the predicted arrival time is later than the start time, output the second warning by flashing the indicator in the second color at a period corresponding to the time difference between the time when the specified time has elapsed and the predicted arrival time. The start assistance device according to claim 2, characterized in that.

5. The control unit When the predicted arrival time is earlier than the start time, output the first warning on the display. When the predicted arrival time is later than the start time, output the second warning on the display. The start assistance device according to claim 1, characterized in that.

6. The control unit When the predicted arrival time is earlier than the start time, output the first warning to the speaker. When the predicted arrival time is after the start time, output the second warning to the speaker. The start support device according to claim 1, characterized in that.

7. The first warning is to notify that flying will occur as it is. The second warning is to notify that a delay will occur as it is. The start support device according to claim 1, characterized in that.

8. The competition is a boat race. The start support device according to any one of claims 1 to 7, characterized in that.

9. In a competition that starts while running on water, a computer mounted on a boat that is running on water toward the start line Based on the position and speed of the computer and the position of the start line, calculate the predicted arrival time when the boat reaches the start line. When the calculated predicted arrival time is before the start time of the competition, output a first warning to the operator of the boat. When the predicted arrival time is after the start time, output a second warning different from the first warning to the operator of the boat. A start support method characterized by executing the process.

10. In a competition that starts while running on water, a computer mounted on a boat that is running on water toward the start line Based on the position and speed of the computer and the position of the start line, calculate the predicted arrival time when the boat reaches the start line. When the calculated predicted arrival time is before the start time of the competition, output a first warning to the operator of the boat. When the predicted arrival time is after the start time, output a second warning different from the first warning to the operator of the boat. A start support program characterized by causing the process to be executed.

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