Drift evaluation system, method, and program

Abstract

This system allows drivers to easily and objectively evaluate their own drift driving. [Solution] The drift evaluation system comprises a terminal 1 that can be mounted in a vehicle and is equipped with multiple sensors, and a server 10 that can communicate with the terminal. The server 10 has a course information management means 11 that manages course information, drift information processing means 12, 13 that input and process sensor information to convert it into drift information, and a correspondence information generation means 13 that generates correspondence information that associates course information and drift information for each drift operation and outputs it to the terminal 1.

Description

Technical Field

[0001] The present invention relates to a system for evaluating drift driving in a circuit or the like. In particular, it is used when a driver himself evaluates his own drift driving technique via a mobile terminal such as a smartphone.

Background Art

[0002] Drift driving is a driving technique in which a vehicle is intentionally skidded and controlled. In drift driving, not only relying on steering, but also through the active use of an accelerator, brakes, side brakes, clutch, etc., a complex and advanced operation is required to adjust the traveling direction while maintaining a sliding state.

[0003] This drift driving has been carried out by some automobile driving enthusiasts since the 1980s to polish their driving skills on mountain passes and docks. However, in recent years, it has become a target of regulation as dangerous driving, and it is becoming common sense in society to perform drift driving on a circuit. Furthermore, this drift driving has been sublimated into a competition, and organizations such as "D1 Grand Prix" and "Formula Drift" have been established. Among them, the "D1 Grand Prix" is held under strict rules as an automobile competition that complies with the rules as a quasi-domestic format of JAF and is recognized.

[0004] By the way, the evaluation criteria in drift competitions are very ambiguous. That is, in the history of automobile competitions so far, the evaluation criteria for the competitions are generally time, and in endurance competitions, distance is the absolute evaluation criterion. However, in drift competitions, the beauty of the run and the level of driving technique are evaluated. These are largely related to human sensibility, and there is no absolute evaluation criterion.

[0005] In "D1 Grand Prix" and "Formula Drift," the score was calculated by summing the evaluations of three judges. However, in "D1 Grand Prix," the evaluation was criticized for being biased towards sponsors, and a mechanical evaluation system was introduced in 2013. The equipment and system used for scoring in this mechanical evaluation system are called "DOSS," and a patent application (Patent Document 1) has been filed regarding the scoring criteria.

[0006] Examples of elements of drift driving include the initiation of the drift, entry speed, distance, drift angle, driving line, counter-drift, amount of white smoke from the tires, and the degree of appeal to the audience. A glossary of terms will be added at the end. In conventional techniques, evaluation will be conducted using DOSS as much as possible, with supplementation by the judges. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Special Publication No. 2015-068216 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] In competitions like the "D1 Grand Prix" and "Formula Drift," objective evaluation is extremely important. Dedicated measuring devices are installed on the vehicles, and mechanical evaluations are performed based on strict evaluation criteria.

[0009] However, conventional systems are only available to competition participants and are not easily accessible. As mentioned above, drifting was started by drifting enthusiasts, and there are also those who are not interested in the competitive aspect, known as "enjoyment-oriented" drifters. There is no simple evaluation system that satisfies the needs of these enjoyment-oriented drifters. Even enjoyment-oriented drifters have a desire to objectively evaluate their own drifting skills.

[0010] Furthermore, the conventional system is only available when participating in competitions, and there is a demand from competitive drivers for an objective evaluation of their drift driving during regular practice sessions. There is also a demand for an objective evaluation of practice runs immediately before a competition.

[0011] In response to these requests, currently, I have external videographers film my drifting, and I use the footage to visually review my own drifting, gain feedback on my subjective experience, and improve my drifting skills.

[0012] The present invention aims to solve the above-mentioned problems and to enable drivers to easily and objectively evaluate their own drift driving. [Means for solving the problem]

[0013] The drift evaluation system according to the present invention, which solves the above problems, comprises a vehicle-mountable terminal equipped with multiple sensors and a server capable of communicating with the terminal. The server has a course information management means for managing course information, a drift information processing means for inputting sensor information, performing calculations, and converting it into drift information, and a correspondence information generation means for generating correspondence information that associates the course information with the drift information for each drift operation and outputting it to the terminal.

[0014] Drift information corresponding to the course information is displayed on the terminal screen as a reenactment video. Drivers can objectively evaluate their own drift driving through the reenactment video.

[0015] Preferably, in the above invention, the course information is existing map information.

[0016] Drifting is assumed to be performed on a circuit, and course information is stored as existing map data. Identifying the circuit name will also identify the course information.

[0017] Preferably in the above invention, the course information management means has a point input function for inputting course points.

[0018] Even when there is no course information as map information like in a gymkhana competition, course information can be set by point input.

[0019] In the above invention, preferably, the server has an evaluation criterion setting means for outputting an evaluation criterion setting screen to the terminal and setting the criteria for drift evaluation based on an input instruction from the terminal, and an evaluation means for evaluating the success or failure of a drift based on the evaluation criteria set by the evaluation criterion setting means and the drift information by the drift information processing means.

[0020] When the evaluation of each numerical value related to the drift information displayed on the terminal screen is complicated, a simple evaluation by an evaluation value is possible.

[0021] Also, by setting evaluation criteria, evaluation according to the driver's preference is possible.

[0022] In the above invention, preferably, an OBD information acquisition means for acquiring the OBD information of the vehicle is provided.

[0023] Thereby, the accelerator operation amount, the brake operation amount, and the steering operation amount can be input as sensor information. By correlating with the entry speed and the drift angle, specific problems and improvement points can be extracted.

[0024] In the above invention, preferably, the server has a real-time reporting means for outputting a real-time report based on the drift information.

[0025] The real-time report substitutes for a spotter. An evaluation can be obtained immediately after each drift operation unit. The feedback effect is high.

[0026] Preferably, in the above invention, the drift information processing means processes drift information of a plurality of vehicles including the first vehicle and the second vehicle, and the correspondence information generation means outputs correspondence information related to the first vehicle and the second vehicle to the terminal of the first vehicle and outputs the correspondence information related to the first vehicle and the second vehicle to the terminal of the second vehicle.

[0027] By selecting the pursuit mode on the terminals mounted on the first vehicle and the second vehicle, it is possible to enjoy the pursuit competition without participating in the tournament.

[0028] The drift evaluation system according to the present invention for solving the above problems is incorporated in a server that can be mounted on a vehicle and is communicable with a terminal equipped with a plurality of sensors, and includes a course information management means for managing course information, a drift information processing means for inputting and processing the information of the sensors to obtain drift information, and a correspondence information generation means for generating correspondence information that associates the course information with the drift information for each drift operation and outputting the correspondence information to the terminal.

[0029] Drift information corresponding to the course information is displayed as a reproduction video on the terminal screen. The driver can objectively evaluate his / her own drift driving through the reproduction video.

[0030] The drift evaluation system according to the present invention for solving the above problems includes a plurality of sensors that can be mounted on a vehicle, a course information management means for managing course information, a drift information processing means for inputting and performing arithmetic processing on the information of the sensors to obtain drift information, and a correspondence information generation means for generating and outputting correspondence information that associates the course information with the drift information for each drift operation.

[0031] For example, if a portable terminal with high arithmetic processing ability is used, it is possible to objectively evaluate one's own drift driving without external communication.

[0032] The present invention, which solves the above problems, is a drift evaluation method using an information processing device. The information processing device manages course information for drift driving, inputs information from vehicle-mountable sensors, performs calculations to obtain drift information, generates correspondence information that associates the course information with the drift information for each drift operation, and outputs the correspondence information.

[0033] The drift evaluation program according to the present invention, which solves the above problems, causes an information processing device to execute the following: a process for managing course information for drift driving; a process for inputting information from a vehicle-mountable sensor, performing calculations, and converting it into drift information; and a process for generating correspondence information that associates the course information with the drift information for each drift operation, and outputting the correspondence information. [Effects of the Invention]

[0034] According to the drift evaluation system of the present invention, drivers can objectively and easily evaluate their own drift driving through a reconstructed video. [Brief explanation of the drawing]

[0035] [Figure 1] Image diagram of the overall configuration of the system in this application. [Figure 2] Hardware configuration diagram of an information processing device [Figure 3] Conceptual diagram of drift driving [Figure 4] Evaluation Concept Diagram in the System Present [Figure 5] Functional block diagram of the present system [Figure 6] Sequence diagram in the present system [Figure 7] Example of screen transitions in a recreated video [Figure 8] Example of screen transitions in a recreated video [Figure 9] Example of evaluation criteria setting screen [Figure 10] Example of evaluation criteria setting screen [Figure 11] Example of a selection screen for the evaluation criteria setting screen. [Figure 12]Image diagram related to external extensions and real-time reporting [Figure 13] Image of pursuit mode [Figure 14] Gymkhana mode image diagram [Modes for carrying out the invention]

[0036] ~Overview~ Figure 1 is a conceptual diagram of the overall configuration of the system described in this invention. The system described in this invention consists of a mobile terminal 1, such as a commercially available smartphone or tablet, and a server 10 that can communicate with terminal 1 via an internet connection.

[0037] In this embodiment, for the sake of explanation, calculation processing is performed on the server 10 as much as possible, and the calculation processing on the mobile terminal 1 is kept to a minimum. However, the processing load on the mobile terminal 1 may be increased as appropriate. If the terminal has high processing power, the processing may be completed on the mobile terminal 1 alone without going through the server 10.

[0038] Mobile device 1 can be a commercially available smartphone or tablet, or a single-board computer.

[0039] The mobile device 1 has the application specifically for this application downloaded to it. Alternatively, the processing information of server 10 may be used via the website specifically for this application.

[0040] Mobile device 1 is mounted on a vehicle that will be performing drift driving. Specifically, mobile device 1 is securely fixed to the vehicle's deck board with adhesive tape or the like. A commercially available car mount can also be modified to securely fix the device in place.

[0041] The mobile terminal 1 and the server 10 are forms of the information processing device 100. A general information processing device 100 will be described below.

[0042] Figure 2 is a hardware diagram of the information processing device 100. The device 100 includes a CPU (Central Processing Unit) 101, a ROM (Read Only Memory) 102, a RAM (Random Access Memory) 103, a non-volatile memory 104, and an I / O 105, and each component is connected via a bus 106.

[0043] The CPU 101 executes functions 1 and 5 based on the program. The ROM 102 stores the program. The RAM 103 is used as a temporary workspace for the CPU 101. Non-volatile memory 104 is an example of a storage device that retains stored information even when the power supply is cut off. Examples include semiconductor memory and hard disks. Non-volatile memory 104 does not need to be built-in and may be removable. I / O 105 is an input / output interface.

[0044] For example, a communication unit 107, an input unit 108, a display unit 109, etc., are connected to I / O 105.

[0045] The communication unit 107 is connected to a communication line and is equipped with a communication protocol for data communication with the outside. For example, text information for each report may be entered via communication.

[0046] The input unit 108 includes a touch panel, keyboard, and mouse, and is used to input operation instructions and other information.

[0047] The display unit 109 is, for example, a liquid crystal display, an organic EL display, a projector, etc., and displays information processing results, etc. It may also be displayed on another terminal display via a communication line. Printers, etc., are also included.

[0048] Figure 3 is a conceptual diagram of drift driving. Drifting primarily uses FR drive (Front engine, Rear drive). The front wheels are steered.

[0049] In normal driving, steering is done in the direction of the curve, whereas in drift driving, steering is done in the opposite direction of the curve.

[0050] During drifting, the rear wheels exceed their grip limit, causing a sideways slip, and both inertial force and driving force act on them. The vehicle body moves in the direction of the resultant force of the inertial force and driving force.

[0051] In normal driving, the vehicle's posture (along the vehicle's long axis) and its direction of travel are almost identical, whereas in drift driving, the angle between the vehicle's posture and its direction of travel becomes larger.

[0052] In drift driving, the driver adjusts the direction of travel while maintaining the slide state by actively using the accelerator, brakes, handbrake, and clutch in addition to the steering wheel.

[0053] Figure 4 is a conceptual diagram of the evaluation system in this invention. This system allows for the simple and objective evaluation of drift driving via a mobile terminal 1 mounted in the vehicle.

[0054] If you activate the system before drifting, you can recreate your drift on the screen of your mobile device 1 immediately afterward (for example, 3 minutes later).

[0055] Drifting is intended to be done on a racetrack. A racetrack has multiple curves, and each drift is performed on a specific curve. In other words, the track is often divided into a drift section and a cooling section. This is to prevent accidents and minimize damage to the vehicle. During drifting, the car moves sideways, reducing the cooling efficiency of the radiator and oil cooler, leading to engine overload. Therefore, a cooling section is necessary.

[0056] Furthermore, a typical race involves multiple laps around the circuit. Therefore, each drift unit is assigned a number. In other words, course information is a collection of drift units.

[0057] In this system, the maximum speed and maximum drift angle are displayed for each drift unit. The vehicle's posture is displayed as a home shape (with the convex part pointing forward), and the direction of travel is indicated by an arrow. Vehicle speed and drift angle are displayed continuously (for example, updated every 1 second).

[0058] The circuit plan view can be scaled using pinch-in and pinch-out gestures. This allows for the reproduction of both the overall trend and individual drift maneuvers.

[0059] If no specific settings are made, the system will automatically adjust to display the vehicle and each drift unit, and will transition to displaying the next drift unit once one drift unit is completed.

[0060] Furthermore, it is possible to switch between a circuit plan view and a list of individual drift maneuvers, allowing you to extract and select the drift maneuver you want to check from the list view.

[0061] ~Basic configuration~ Figure 5 is a functional block diagram of the present system. The present system consists of a mobile terminal 1 and a server 10.

[0062] The mobile terminal 1 includes a sensor information acquisition unit 2, an external expansion unit 3 (described later), a communication unit 4, an input unit 5, a display output unit 6, and an audio output unit 7.

[0063] Mobile device 1 is a commercially available smartphone or tablet, and is equipped with various sensors as standard, such as a GPS receiver, accelerometer, gyroscope, and geomagnetic sensor. Sensor information acquisition unit 2 acquires information from the various sensors along with time information.

[0064] The external expansion unit 3 allows for the connection of, for example, an ODB device 20 or an external GPS receiver 21.

[0065] Mobile device 1 is a commercially available smartphone or tablet, and has communication functionality (communication unit 4) as standard.

[0066] Mobile device 1 is a commercially available smartphone or tablet, and it has input functions (input unit 5) such as a touch panel and an input microphone as standard.

[0067] Mobile device 1 is a commercially available smartphone or tablet, and it has a display (display output unit 6) and a speaker (audio output unit 7) as standard features.

[0068] Server 10 works in conjunction with mobile device 1 to perform user management and data management.

[0069] Server 10 includes a course information management unit 11, a sensor information input unit 12, various indicator calculation units 13, a corresponding information generation unit 14, an evaluation criteria setting unit 15 (described later), and an evaluation unit 16 (described later).

[0070] The course information management unit 11 manages course information. Drift driving is assumed to be performed on a circuit. The planar shape of the circuit is stored as existing map information. The course is associated with location information such as latitude and longitude.

[0071] The sensor information input unit 12 receives sensor information from the terminal. The various indicator calculation unit 13 calculates various indicators (drift information) related to drift based on the sensor information.

[0072] Various indicators related to drift include speed, drift angle, distance, and driving line. Drift terminology will be explained later. For example, speed can be calculated from the distance traveled per unit time or the integral of acceleration. The drift angle can be calculated from the direction of movement and the vehicle's direction. The vehicle's direction can be calculated from the integral of the gyro sensor's measured values.

[0073] The correspondence information generation unit 14 associates the vehicle's position on the course with the drift information. This is called correspondence information. Furthermore, it outputs the correspondence information to the mobile terminal 1.

[0074] ~Basic operations~ Figure 6 is a sequence diagram of the present system. The present system performs information input and output between the mobile terminal 1 and the server 10.

[0075] When the application is launched via mobile device 1, it accesses server 10. The identification number of mobile device 1 is sent to server 10. For example, the driver presses the start button.

[0076] At this time, by also transmitting location information, the server 10 automatically sets the target circuit. For confirmation, the target circuit may be displayed on the mobile terminal 1. Alternatively, the target circuit may be selected via the mobile terminal 1. The server 10 transmits the circuit course information to the mobile terminal 1.

[0077] Furthermore, evaluation criteria may be set before the run (details below). Evaluation criteria may also be set after the run.

[0078] When the vehicle starts moving, the mobile terminal 1 transmits sensor information to the server 10. Circuit driving is often divided into drift sections and cooling sections, and it is easy to identify these sections, so sensor information may be transmitted or received only during the drift section.

[0079] Server 10 calculates drift information based on sensor data. The drift information is calculated as needed, and Server 10 stores the sensor data and calculation results. The calculation results may also be reported in real time (details below).

[0080] Once the vehicle's run is complete, sensor data acquisition automatically stops. The driver can then safely park the vehicle and review their draft run. A playback command is sent to the server 10 via the mobile device 1.

[0081] Server 10 transmits corresponding information, including the vehicle's position and drift data, to the mobile terminal 1. Drifting is then simulated on the mobile terminal 1.

[0082] When the application is terminated via mobile device 1, the server 10 also terminates its processing. For example, the driver presses the terminate button.

[0083] This application is based on existing map applications and existing video playback applications, and includes zoom in / out functions, automatic scrolling functions, display center setting functions, play / stop functions, fast forward / rewind functions, playback speed change functions, and track selection functions.

[0084] Figures 7 and 8 show examples of screen transitions in the application of this invention. In one drift operation unit, the maximum speed is displayed at the position corresponding to the maximum speed, and the maximum drift angle is displayed at the position corresponding to the maximum drift angle. In addition, the vehicle's attitude is displayed as a home shape, and the direction of travel is indicated by an arrow. The vehicle speed and drift angle are displayed continuously (for example, updated every 1 second). Furthermore, the vehicle's centerline trajectory is displayed as a driving line.

[0085] In Screen 1, the vehicle is accelerating as it approaches the drift zone. The drift angle is negligible. The entry speed is measured. The vehicle begins to drift. In Screen 2, the vehicle starts drifting while slightly decelerating from the point corresponding to the maximum speed. The drift angle increases rapidly. The distance traveled is measured. In Screen 3, the vehicle maintains a large drift angle while decelerating.

[0086] In screen 4, the vehicle approaches the position corresponding to the maximum drift angle. The maximum drift angle is measured. In screen 5, after passing the position corresponding to the maximum drift angle, the drift angle decreases. In screen 6, upon the end of the drift movement section, the vehicle re-accelerates and the drift angle becomes negligible. In image 6, the vehicle is continuous with the next drift movement unit. A rebound is observed.

[0087] The drift evaluation using this system is, in principle, performed by viewing a reenactment video on a single screen of a mobile device immediately after the drift, but it may also be performed at a later date using a personal computer at home or similar.

[0088] ~Basic Effects~ The conventional system was only available when participating in competitions, and there was no simple system that allowed individuals to easily and objectively evaluate their drift driving during regular practice.

[0089] In this system, drift driving can be objectively evaluated simply by having a dedicated application downloaded to the driver's mobile device 1, or by accessing the dedicated website through the mobile device 1.

[0090] The system is activated before drifting, and immediately after drifting, the user can see a recreation of their drift on the screen of their mobile device 1. They can review their drift through the recreation video, receive feedback to improve their subjective perception (instinct), and use it to enhance their drifting skills. Because it is visible immediately after drifting, the user's subjective perception is clear, resulting in a high level of feedback effectiveness.

[0091] ~Other~ In this system, drift driving data is stored on a server and, with the driver's permission, can be made publicly available on the internet and viewed by third parties. For example, by searching for drift driving data of others with similar or slightly higher skill levels based on evaluation values ​​(described later) and comparing it with one's own drift driving data, problems and areas for improvement can be identified. Furthermore, by comparing one's own evaluation value with that of others, one can rank their own driving level.

[0092] Furthermore, by making their own drift driving data public, they can expect comments from third parties, allowing for a more objective evaluation.

[0093] ~Setting Evaluation Criteria~ In this system, the maximum speed equivalent position, maximum speed, maximum drift angle equivalent position, maximum drift angle, vehicle speed, drift angle, vehicle posture, direction of travel, and driving line for each drift unit are reproduced and displayed on a mobile device, and the driver evaluates the reproduced video based on their own judgment. On the other hand, it is simpler to use an overall evaluation value. Conventional systems also calculate evaluation values.

[0094] By the way, drifting was originally started by drifting enthusiasts, and the evaluation criteria of conventional systems may not be appropriate for all enthusiasts.

[0095] This system allows for the setting of evaluation criteria according to the driver's preferences.

[0096] In Figure 5, the server 10 includes an evaluation criteria setting unit 15 and an evaluation unit 16.

[0097] The evaluation criteria setting unit 15 outputs the evaluation criteria setting screen to the mobile terminal 1 and sets the drift evaluation criteria based on the input from the mobile terminal 1.

[0098] The evaluation unit 16 evaluates the success or failure of the drift based on the evaluation criteria set by the evaluation criteria setting unit 15 and the drift information from the various indicator calculation unit 13. The evaluation may be an evaluation value based on a calculation formula, or an evaluation comment based on the evaluation value. The evaluation value is calculated, for example, by performing a multivariate analysis such as linear analysis on various indicators.

[0099] This system acquires drift information for each drift unit and outputs an evaluation value for each drift unit. Furthermore, an evaluation of the entire drive may also be performed.

[0100] In the sequence diagram in Figure 6, evaluation criteria are set after the application is launched and before the game is played. On the initial screen, the user can choose whether or not to set evaluation criteria, and the server 10 sends the evaluation criteria setting screen to the mobile terminal 1.

[0101] The driver selects evaluation criteria according to their preferences via mobile device 1. Mobile device 1 transmits the selection information to server 10.

[0102] The evaluation criteria setting unit 15 modifies the weighting of the evaluation value calculation, and the evaluation unit 16 performs the calculation based on the modified calculation formula.

[0103] The drift information is already saved, and evaluation criteria can be set after the run. Changing the evaluation criteria after the run will make the differences from the standard criteria clear.

[0104] Circuits feature corners, S-curves, and complex corners, each requiring different evaluation criteria. Evaluation standards may be set for each individual drift unit. This allows for a more detailed reflection of the driver's preferences.

[0105] Figures 9 and 10 show examples of evaluation criteria setting screens.

[0106] Screen Example 1 uses a checkbox selection format. Blank boxes are displayed for the important items: Standard, Maximum Angle, Approach Speed, and Flight Distance. The driver selects the items they want to prioritize and instructs the system to reflect them in the evaluation criteria. It is simple as it only requires checking the checkboxes.

[0107] Screen example 2 shows a pie chart adjustment format. The pie chart displays the weighting ratio of maximum angle, entry speed, and flight distance. The default setting is equal weighting. The driver adjusts the weighting ratio through screen operations and instructs the system to reflect this in the evaluation criteria. This allows for a more detailed reflection of the driver's preferences.

[0108] Screen example 3 shows a video selection format. Multiple drift videos from professional drivers are displayed for viewing. The driver selects a drift that suits their preferences and instructs the system to reflect this in the evaluation criteria. This allows the system to reflect the driver's preferences even when it is difficult to express them verbally or numerically.

[0109] Since each of the example screens 1-3 has its own advantages and disadvantages, it might be a good idea to allow users to select the evaluation criteria setting screen.

[0110] Figure 11 shows an example of the selection screen for the evaluation criteria setting screen. It uses a checkbox selection format, allowing users to choose from one of the screen examples 1-3. Selecting an evaluation criteria setting method displays the corresponding evaluation criteria setting screen.

[0111] Furthermore, the evaluation value calculation program and its weightings are stored on the server, shared over the internet, and viewable by authorized users. They are approved or rejected via pull requests. Approved evaluation value calculation programs and their weightings are made public, allowing multiple users to rate them.

[0112] ~External Extensions & Real-Time Reporting~ The system described herein consists of a mobile terminal 1 and a server 10, but is externally expandable. For example, it can be expanded with an OBD (On-Board Diagnostics) device 20 or an external GPS receiver 21.

[0113] Figure 12 is an illustrative diagram showing external extensions and real-time reporting (described later).

[0114] The OBD device 20 is originally standard equipment in most vehicles and has the function of self-diagnosing malfunctions in the vehicle's electronic control units. It detects abnormalities in various parts such as the engine and transmission and records the information. Mechanics obtain information from the OBD device 20 to identify the fault location and perform repairs more quickly and accurately.

[0115] The OBD device and the mobile terminal 1 can communicate over short distances via the OBD adapter. In other words, the information detected by the OBD device 20 can be input to the mobile terminal 1.

[0116] Drifting is achieved through the coordinated operation of the driver's steering, accelerator, and brakes. These operations can be acquired as detection information from the OBD device 20. The mobile terminal 1 is equipped with an external expansion unit 3 and transmits OBD device detection information to the server 10 after setting up a connection with the OBD device 20.

[0117] Server 10 correlates drift information with OBD device detection information. This clarifies the relationship between specific driving operations and drift driving. For example, if the drift angle is insufficient, it is possible to evaluate whether the start time of each operation was too late or too early, and whether each operation was excessive or insufficient. This allows for a more specific identification of problems and areas for improvement.

[0118] Drifting is often performed at high speeds. The GPS receivers built into commercially available smartphones and tablets have relatively low GPS update frequencies, and their accuracy in detecting the position of a vehicle at high speeds may be insufficient. By using an external GPS receiver 21, the GPS update frequency increases, enabling more accurate position detection.

[0119] The drift evaluation using the present invention is, in principle, performed by viewing a reenactment video on a single screen of a mobile device immediately after a drift, but it may also be performed in real time.

[0120] In drift competitions, in addition to the driver, there are spotters who provide advice to the driver via radio communication from near the spectator stands or judges' seats at the circuit. Since the competition is usually conducted twice, the spotters quickly communicate any problems or areas for improvement from the first run to the driver. This allows the driver to reflect on their performance and apply those lessons to the next run.

[0121] The real-time reporting feature of this system replaces spotters. Whether or not real-time reporting is required and the content of the reports can be configured on a single screen of a mobile device.

[0122] For each drift unit, drift information such as maximum speed and maximum drift angle can be calculated in real time. This information can be reported to the driver in real time via synthesized voice through a mobile device 1 and wireless earphones.

[0123] Since evaluation is obtained immediately after the drift (for example, a few seconds later), it provides a high level of feedback to the driver's subjective experience. Especially in circuit driving, where the course is divided into drift and cooling phases, it's possible to check the evaluation of the most recent drift unit during the cooling phase. This can then be reflected in the next drift unit.

[0124] If reporting each numerical value related to drift information becomes information overload and hinders concentration, or if it is difficult to evaluate each value in isolation, evaluation values ​​and evaluation comments may be reported in real time. If your subjective opinion (favorable impression) matches the real-time evaluation (high evaluation), you can approach the next drift unit with confidence. If your subjective opinion (favorable impression) and the real-time evaluation (low evaluation) do not match, you can view yourself objectively. If your subjective opinion (unease) and the real-time evaluation (high evaluation) do not match, you can eliminate unnecessary anxiety. If your subjective opinion (unease) and the real-time evaluation (low evaluation) do match, the problems and areas for improvement in the next drift unit will be clear.

[0125] When acquiring OBD device information, you may also report specific operational problems (for example, delayed steering response) in real time. This allows for a more specific identification of problems and areas for improvement.

[0126] ~Pursuit~ One type of drift competition is tandem drifting. In tandem drifting, two cars compete one-on-one, vying for technique and proximity. The leading car creates a drift line, while the trailing car follows the leading car's line, drifting as close as possible. The leading car tries to pull away from the trailing car as far as possible. There are two rounds of competition, and after each round, the roles of leading and trailing car are reversed.

[0127] The judging criteria include proximity, line accuracy, drift angle, and speed. Following vehicles, in particular, are required to drift in sync with the preceding vehicle, and to maintain a drift angle equal to or greater than the preceding vehicle's, while staying inside the preceding vehicle. These advanced driving skills are essential. Disruptions to the track, such as spins and understeer, will result in penalty points.

[0128] The system described in this invention is also capable of handling chase races. An image of the chase mode is added to Figure 1. The leading vehicle is equipped with mobile terminal 1A, and the following vehicle is equipped with mobile terminal 1B. Server 10 can communicate with mobile terminals 1A and 1B.

[0129] Figure 13 is an illustrative diagram of the chase mode screen. In chase mode, the drift simulation video of the leading car is displayed on mobile device 1A, and the drift simulation video of the following car is displayed on mobile device 1B, just like in the basic mode. In chase mode, by synchronizing the two mobile devices, the drift simulation video of the leading car is additionally displayed on mobile device 1B, and the drift simulation video of the following car is displayed on mobile device 1A.

[0130] Furthermore, proximity distance, drift angle difference, and other factors may be calculated as various indicators related to the pursuit mode, and the winner or loser may be determined using these indicators and a pursuit win / loss determination program.

[0131] In this system, two drivers can enjoy chase racing without participating in a competition by either downloading a dedicated application to their mobile terminal 1 or accessing the dedicated website via their mobile terminal 1, and then both drivers selecting the chase mode.

[0132] ~Gymkhana~ Gymkhana is a type of motorsport. In gymkhana, a course is set up by placing pylons in places such as ski resort parking lots, and drivers compete in their driving skills. Drifting skills can also be competed in gymkhana.

[0133] In basic mode, the circuit's planar shape was pre-stored as existing map information, whereas in gymkhana mode, the pylon positions are input, and the system stores the course shape. The course information management unit 11 has a point input function.

[0134] Figure 14 is an illustrative diagram of the gymkhana mode. It is an example of setting up a course in a relatively large parking lot.

[0135] Specifically, before the competition, participants walk around to confirm the location of each pylon. During this process, they input location information for each pylon via a GPS receiver. Tapping the input button at a pylon's location enters the location information. After inputting the location information for all pylons, a course is set between them. For example, tracing the screen with a finger sets a rough course. After setting the course information, the process is the same as in basic mode. Even in gymkhana competitions, participants can recreate their drift run on the mobile device screen immediately afterward.

[0136] ~Drift Terminology Notes~

[0137] ● Starting point Definition: Drift initiation action Importance: A crucial element that greatly influences the quality of the subsequent drift. Evaluation points: Timing, technical accuracy, smoothness and stability Technical aspects: Appropriate selection and execution of techniques such as handbrake, clutch kick, and weight transfer; precise control of speed and position at corner entry; instantaneous understanding and response to vehicle behavior. Note: Not only is the initial drift impressive, but the smooth transition to the subsequent drift is also crucial.

[0138] ● Approach speed Definition: The speed of a vehicle when entering a corner. Importance: High-speed entry is difficult and demonstrates a high level of skill. Evaluation points: Absolute value of speed, appropriate speed selection tailored to the characteristics of the corner, balance between entry speed and the stability of the following drift. Technical aspects: Precise control of braking and acceleration, accurate reading of corner shapes and road conditions. Note: Entering at excessively high speeds is dangerous, so safety must be considered.

[0139] ● Flying distance Definition: The distance a vehicle moves laterally during a drift. Importance: Longer flight distances demonstrate advanced vehicle control capabilities. Evaluation points: Absolute value of lateral movement distance, consistency and stability of flight distance, selection of flight distance appropriate to the course layout. Technical aspects: Precise operation of the accelerator and steering, skillful control of weight transfer, and understanding and utilizing the tire grip. Note: The evaluation is not simply based on the distance achieved, but on the maximum distance that can be controlled.

[0140] ● Drift angle Definition: The angle difference between the orientation of the vehicle and the actual direction of travel. Importance: Maintaining a wide angle requires advanced skills and is visually impressive. Evaluation points: Angle size, angle holding time, angle stability and consistency Technical aspects: Precise control of steering, acceleration, and braking; dynamic control of vehicle weight balance; understanding and utilizing the limits of tire grip. Note: Excessively large angles can lead to a decrease in speed and loss of control, so proper balance is required.

[0141] ● Driving line Definition: The trajectory of a vehicle on a course. Importance: Maintaining an ideal line demonstrates high skill and strategy. Evaluation points: Precise passage through the clipping point, proper execution of the out-in-out line, and line selection tailored to the characteristics of the corner. Zone passage: This refers to a designated part of the vehicle (such as the rear tires, rear bumper, or front bumper) passing through a specific area (zone) set on the course. Technical aspects: Strategic line selection throughout the course, precise positioning of entry, apex, and exit at each corner, smooth connection between lines in consecutive corners, and precise entry and exit into zones. Note: It's not just about following a predetermined line; a line that balances the beauty and efficiency of the drift is highly valued. Accuracy in zone passage is crucial; it is essential that designated parts of the vehicle pass through the zone reliably. Additional information regarding zones: Zone location: Typically set on the outside of corners or in particularly difficult areas. Zone size: Varies depending on the competition and difficulty level, but is usually set to a width of several vehicles. Evaluation method: Factors such as whether or not the system passes through a zone, stability during the pass-through, and duration of stay within the zone are considered. Strategic importance: Passing through the zone leads to high scores, so drivers need to aim for the zone while maintaining a balance with the overall line.

[0142] ● Turning around (turning around) Definition: The action of switching the direction of drift to the opposite side. Importance: Quick and large turns demonstrate advanced vehicle control skills. Evaluation points: Speed ​​of the swing, angle of the swing, stability after the swing. Technical aspects: Instantaneous and precise control of center of gravity shift, coordinated operation of steering and accelerator, understanding and utilization of inertial force. Note: Not only is the flashiness of the counter-steering important, but the smooth transition to the subsequent drift is also crucial.

[0143] ● Amount of white smoke from the tires Definition: White smoke produced when tires rub against the road surface. Importance: Provides a visual effect and demonstrates the intensity of the drift. Evaluation points: Amount and density of white smoke, duration of white smoke, consistency throughout the drift. Technical aspects: Proper control of tire friction heat, precise adjustment of accelerator work, understanding and utilizing tire characteristics. Note: It's not just about producing a lot of white smoke; the balance with other elements must also be considered.

[0144] ● Appeal to the audience Definition: The impression a driver's performance gives to the audience Importance: To enhance the entertainment value and excitement of the competition for spectators. Evaluation points: Originality of performance, individuality of driving style, audience reaction and excitement. Technical aspects: Unique expression based on fundamental techniques, lines and movements that are mindful of the audience's perspective, and bold yet controlled driving. Note: Expressions must be based on adherence to rules and regulations. [Explanation of Symbols]

[0145] 1. Mobile device 2. Sensor Information Acquisition Unit 3 External expansion unit 4. Communications Department 5 Input section 6 Display Output Section 7. Audio output section 10 servers 11. Course Information Management Department 12 Sensor information input section 13 Various index calculation parts 14 Corresponding Information Generation Unit 15. Evaluation Criteria Setting Department 16. Evaluation Department 20 OBD device 21 External GPS receiver

Claims

1. A terminal that can be mounted in a vehicle and is equipped with multiple sensors, A server that can communicate with the aforementioned terminal, Equipped with, The aforementioned server, A course information management system for managing course information, A drift information processing means that receives the information from the aforementioned sensor, performs calculations, and converts it into drift information, Correspondence information generation means generates correspondence information that associates the course information with the drift information for each drift operation and outputs it to the terminal. Characterized by having Drift evaluation system.

2. The aforementioned course information is existing map information. The drift evaluation system according to claim 1, characterized in that it is the same as described in claim 1.

3. The course information management means has a point input function for inputting course points. The drift evaluation system according to claim 1, characterized in that it is the same as described in claim 1.

4. The aforementioned server, An evaluation criteria setting means outputs an evaluation criteria setting screen to the terminal and sets the criteria for drift evaluation based on input instructions from the terminal, An evaluation means for evaluating the success or failure of a drift based on the evaluation criteria set by the evaluation criteria setting means and the drift information from the drift information processing means, has Drift evaluation system.

5. OBD information acquisition means for acquiring vehicle OBD information. Equipped with The drift evaluation system according to claim 1, characterized in that it is the same as described in claim 1.

6. The server is a real-time reporting means that outputs a real-time report based on drift information. has The drift evaluation system according to claim 1, characterized in that it is the same as described in claim 1.

7. The drift information processing means processes drift information of a plurality of vehicles, including the first vehicle and the second vehicle. The correspondence information generation means outputs correspondence information relating to the first vehicle and the second vehicle to the terminal of the first vehicle, and outputs correspondence information relating to the first vehicle and the second vehicle to the terminal of the second vehicle. The drift evaluation system according to claim 1, characterized in that it is the same as described in claim 1.

8. It is integrated into a server that can communicate with a vehicle-mounted terminal equipped with multiple sensors. A course information management system for managing course information, A drift information processing means that inputs and processes the information from the aforementioned sensor to obtain drift information, Correspondence information generation means generates correspondence information that associates the course information with the drift information for each drift operation and outputs it to the terminal. Characterized by having Drift evaluation system.

9. Multiple sensors that can be mounted in a vehicle, A course information management system for managing course information, A drift information processing means that receives the information from the aforementioned sensor, performs calculations, and converts it into drift information, Correspondence information generation means generates and outputs correspondence information that associates the course information with the drift information for each drift operation. Characterized by having Drift evaluation system.

10. Using an information processing device, Manage information about the course where drifting is performed. Information from vehicle-mounted sensors is input, processed, and converted into drift information. For each drift operation, correspondence information is generated that associates the course information with the drift information, and the correspondence information is output. Characterized by Drift evaluation method.

11. Information processing device A process for managing course information for drift driving, The process involves inputting information from vehicle-mounted sensors, performing calculations, and converting it into drift information. For each drift operation, a process is performed to generate correspondence information that associates the course information with the drift information, and to output the correspondence information. Our Drift evaluation program.

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