JP2008158941A - Riding recorder for two wheeler - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily find a cause of near-miss incident during traveling of a two wheeler. <P>SOLUTION: Change speed of operation angle θ1 of a brake lever 32 is continuously recorded in a storage medium during traveling, and when the change speed is detected to exceed a threshold, recording to the storage medium is ended after the lapse of a fixed time. Accordingly, the cause of near-miss incident or the like can be easily found by analyzing the temporal change of the change speed of operation angle θ1 of the brake lever 32 before and after the near-miss incident is likely to occur. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a riding recorder for a motorcycle that continuously records vehicle behavior data such as travel distance and vehicle speed on a recording medium.

  Conventionally, an operation management system that measures the behavior of a vehicle and determines a driving operation tendency of the driver based on the measurement result is known (Patent Document 1). This type of operation management system includes a sensor unit including an angular velocity meter, an accelerometer, a GPS receiver, and a vehicle speed sensor, and a recorder unit for recording measurement data output from the sensor unit.

  The data measured by the sensor unit includes roll, pitch, yaw angular velocity data, two-dimensional or three-dimensional acceleration data, GPS data representing latitude / longitude / speed / azimuth, and vehicle speed pulse input from a vehicle instrument. Data, etc.

  Of the measurement data recorded in the recorder unit, the turning angular velocity of the vehicle can be obtained from the angular velocity data, and the starting acceleration and the brake acceleration of the vehicle can be obtained from the acceleration data. From the GPS data, the current position, current time, and operation speed of the vehicle can be obtained.

  In this operation management system, sudden start or stop (change beyond the threshold value of acceleration data), sudden handle (change beyond the threshold value of angular velocity data), overspeed (threshold value) from the above measured data in a vehicle operated by a driver. The above vehicle speed pulse number) is obtained by calculation, and the driving tendency of the driver is determined. Or the presence or absence of dangerous operation is determined from the change pattern of predetermined measurement data. By determining the driver's driving tendency in this way, the driver's operation details at the time of a traffic accident can be grasped later, or the driver's operating tendency can be grasped in advance to It is said that it is useful for prevention.

  In addition, a technique relating to a fuel cut valve having a structure that reliably cuts off fuel supply when a motorcycle is tilted by a predetermined angle or more using an inclinometer using a pendulum has been proposed (Patent Document 2).

JP 2002-2111265 A JP 2006-69284 A

  However, the vehicle driving recorder according to Patent Document 1 is intended for a four-wheeled vehicle, and there is a problem that if it is applied to a two-wheeled vehicle as it is, the cost becomes high.

  In addition, motorcycles have behaviors unique to motorcycles, such as acceleration at steps, etc. due to differences in undercarriage structure and weight from automobiles, and use a driving recorder for automobiles. Even if you do not get accurate riding data.

  The present invention has been made in consideration of such problems, and an object of the present invention is to provide a motorcycle riding recorder capable of acquiring accurate riding data by paying attention to the behavior unique to the motorcycle. .

  The motorcycle riding recorder according to the present invention is a motorcycle riding recorder that continuously records vehicle behavior data on a recording medium, a comparison means for comparing the behavior data with a threshold value, and the behavior data is obtained by the comparison means. And a recording control means for ending recording on the recording medium after elapse of a predetermined time when it is detected that the value exceeds the threshold value.

  According to the present invention, when the behavior data is continuously recorded on the recording medium, when it is detected that the behavior data exceeds the threshold value, the recording on the recording medium is terminated after a predetermined time has elapsed. For example, if the threshold is matched with the possibility of occurrence of a near-miss (a feeling of sudden tightening, a feeling of tension that makes you breathe for a moment), the possibility of a near-miss may occur. It is possible to keep a record of changes in behavior data before and after. By analyzing the changes in the recorded behavior data over time, it becomes easier to investigate the cause of near-miss occurrence. The present invention can also be realized by a recording medium having a relatively short recordable time.

  A motorcycle riding recorder according to the present invention is a motorcycle riding recorder that continuously records vehicle behavior data on a recording medium. The operation angle detecting means for detecting an operation angle of a brake lever as the behavior data, and the operation angle The operating angle change speed detecting means for detecting the change speed of the apparatus, the comparison means for comparing whether the change speed is larger than a threshold value, and the change speed is larger than the threshold value by the comparing means. And a recording control means for ending recording on the recording medium after a predetermined time has elapsed.

  According to the present invention, when it is detected that the change speed of the operation angle of the brake lever is continuously recorded on the recording medium, it is detected that the change speed of the operation angle of the brake lever exceeds the threshold value. Since the recording on the recording medium is ended later, it is possible to record the change in the change speed of the operating angle of the brake lever before and after the occurrence of near-miss. By analyzing the change over time of the recorded change speed of the brake lever operating angle, it becomes easy to investigate the cause of near-miss occurrence.

  A motorcycle riding recorder according to the present invention is a motorcycle riding recorder that continuously records vehicle behavior data on a recording medium, and includes a tilt detection means for detecting the vehicle tilt angle as the behavior data, and the tilt angle is When comparing means for comparing whether or not the inclination angle is larger than the threshold value is detected by the comparing means for comparing whether or not the value is larger than a threshold value, recording on the recording medium is performed after a predetermined time has elapsed. And a recording control means for ending.

  According to the present invention, when it is detected that the vehicle inclination angle exceeds the threshold during continuous recording of the vehicle inclination angle on the recording medium, the recording on the recording medium is performed after a predetermined time has elapsed. Since it is made to complete | finish, it becomes possible to record the change of the inclination-angle of the vehicle before and behind the possibility of near-miss occurrence as a record. By analyzing the change over time of the recorded vehicle tilt angle, it becomes easy to investigate the cause of near-miss occurrence.

  A motorcycle riding recorder according to the present invention is a motorcycle riding recorder for continuously recording vehicle behavior data on a recording medium, a steer angle detection means for detecting a steer angle as the behavior data, and the steer angle from a threshold value. When the comparison means detects whether the steering angle is larger than the threshold value, the comparison means for comparing whether or not the value has become a large value ends recording on the recording medium after a predetermined time has elapsed. And a recording control means.

  According to the present invention, when it is detected that the steering angle of the two-wheeled vehicle (steering operation angle) is continuously recorded on the recording medium and the steering angle exceeds the threshold value, the recording medium is detected after a predetermined time has elapsed. Therefore, the change in the steering angle before and after the occurrence of a near-miss may be recorded as a record. Analyzing the change over time of the recorded steering angle of the motorcycle makes it easier to investigate the cause of near-miss occurrence.

  In addition, as behavior data and a threshold value, a. During ABS operation when sudden braking is applied, b. When decelerating with acceleration exceeding 1G (G can be calculated from the vehicle speed pulse), c. When the output signal of the camera attached to the front end becomes constant or becomes noise during running, d. For example, when the engine is stopped due to a switch other than the main switch such as a kill switch during traveling.

  According to the present invention, the threshold value for ending the continuous recording in the riding recorder after a predetermined time has been determined by paying attention to the behavior peculiar to the two-wheeled vehicle. For example, the accuracy before and after the time when there is a possibility of near-miss occurrence. You can get a lot of riding data.

  According to the present invention, when the behavior data of the two-wheeled vehicle is continuously recorded on the recording medium, when the behavior data exceeds the threshold value, the recording is ended after a predetermined time has passed. Accurate riding data can be acquired.

  Further, analysis of the riding data (riding record data), that is, change in behavior data with time before and after the time when there is a possibility of occurrence of near-miss, facilitates investigation of the cause of occurrence of near-miss.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a plan view of a vehicle 12 that is a motorcycle incorporating a riding recorder 10 according to an embodiment of the present invention.

  FIG. 2 is a block diagram illustrating a configuration of the riding recorder 10 including the ECU 14 that functions as a recording control unit and the like.

  The ECU 14 and the recording medium 64 of the riding recorder 10 are fixed together with the tilt sensor 16 on the axle and under the seat 20 disposed on the main frame 18 of the vehicle 12. As the inclination sensor 16, for example, an angular velocity meter such as a gas type rate sensor or a vibration gyroscope is used. By integrating the angular velocity obtained from the inclination sensor 16 by the ECU 14, as shown in FIG. The tilt angles (roll angles) θa and θb can be detected. The ECU 14 also functions as an inclination angle calculation unit. A pendulum type inclinometer as described in Patent Document 2 may be used as the inclinometer.

  The ECU 14 has a CPU, a ROM, a RAM, a timer 60, a clock 62, an A / D converter, a D / A converter, and other interfaces, and the CPU executes various programs by executing programs stored in the ROM. Functions as an implementation means.

  As shown in FIG. 2, a vehicle speed pulse is supplied from the vehicle speed pulse generator 22 to the ECU 14, and the vehicle speed (instantaneous speed) V can be calculated by measuring the vehicle speed pulse with a timer 60. In this case, the ECU 14 Functions as vehicle speed calculation means. The ECU 14 also functions as a travel distance calculation unit that calculates the travel distance by converting the vehicle speed pulse by the tire diameter and supplies the distance to the distance meter 24.

  Further, the ECU 14 is supplied with information on the steering angle θs from a steering angle (operation angle) sensor 26 configured by a potentiometer or the like. As shown in FIGS. 1 and 3A, the steering angle sensor 26 is attached to the steering shaft, and supplies the ECU 14 with information on the steering angle θs with the rotation center position of the steering 28 being 0 °. The ECU 14 functions as a steering angle calculation unit.

  Further, the ECU 14 is supplied with information on the lever operating angle θl of the brake lever 32 from a brake lever operating angle sensor 30 constituted by a potentiometer or the like. As shown in FIGS. 1 and 3C, the brake lever operating angle sensor 30 is mounted on the engagement shaft of the brake lever 32 and the steering wheel 28 (grip 34), and the initial position where the brake lever 32 is not gripped is set to 0. Information on the lever operating angle θl to be given is supplied to the ECU 14. The ECU 14 functions as lever operation angle calculation means.

  Further, the ECU 14 includes an ABS ECU 34 that operates the anti-lock brake, a main switch 36 for starting the engine, a kill switch 38 that instantaneously cuts off the fuel supply to the engine, and a video camera 40 that captures a scene in front of the vehicle 12. The behavior data captured by the engine ECU 42 and the ECU 14 for controlling the ignition of the engine and the like every several milliseconds (milliseconds), for example, in chronological order together with the year / month / day / hour / hour / hour / second from the clock 62 for a predetermined time, In the embodiment, a recording medium 64 such as a nonvolatile semiconductor memory that can be recorded for one hour and is detachable is connected.

  FIG. 4 is a schematic diagram for explaining how behavior data is recorded on the recording medium 64. The recording capacity of the recording medium 64 can be recorded for one hour by the first-in first-out (FIFO) method by recording behavior data for each recording address A up to recording addresses A0 to Ae every several milliseconds according to the year / month / day / hour / minute / second. It is capacity. It is configured to overwrite and update from the data of the recording address A0 recorded first at the time t3 when the recording addresses A0 to Ae are recorded for one hour. In practice, in this embodiment, recording on the recording medium 64 is performed only when the main switch 36 is operated and the engine is started in consideration of the probability of occurrence of a near-miss, for example, when the speed exceeds 10 [km] per hour. It has come to be. Time tp represents the current time. In other words, continuous recording of behavior data on the recording medium 64 always records the latest behavior data for one hour (= Ttotal) that exceeds 10 [km] per hour retroactively from the current time tp. It has become. However, as described later, when the behavior data exceeds the threshold value, for example, from the time point t5 in FIG. 4, after recording the behavior data for 10 minutes (= Ts) continuously regardless of the speed, The recording ends. That is, after the threshold value is exceeded, data is recorded for a certain period of time, in this embodiment, for 10 minutes (= Ts), and for 50 minutes before the threshold value is exceeded (Ttotal−Ts = Tb1 + Tb2). (The time between the time points t5 and t6 is the fixed time Ts).

  This is an example. When the threshold is exceeded, recording is performed for 10 minutes before and after, and when the vehicle speed exceeds 10 [km] after 10 minutes, the remaining 40 minutes of recording capacity is used for the FIFO type. The configuration can be changed so that behavior data can be recorded. Of course, it goes without saying that various modifications are possible according to the recording capacity of the recording medium 64.

  The ECU 14 is connected to a battery 50 that is a backup power source that supplies power for a certain period of time when power supply from a battery (not shown) mounted on the vehicle stops.

  The detailed operation of the motorcycle riding recorder 10 of this embodiment, which is basically configured and operates as described above, will be described with reference to the flowchart of FIG. Note that the execution subject of the program according to the flowchart is the ECU 14, but it will be complicated to refer to it each time, and will be omitted as appropriate.

  First, in step S1, the vehicle speed V is detected based on the vehicle speed pulse from the vehicle speed pulse generator 22.

  Next, in step S2, it is determined whether or not the detected vehicle speed V exceeds a predetermined speed, for example, a speed at which an unexpected situation such as an accident may occur, in this embodiment, 10 [km]. If there is not, it is determined in step S3 whether or not a predetermined time Ts according to the setting of the timer 60, which is 10 minutes in this embodiment, is being measured.

  If it is determined in step S3 that the timer 60 has not been set, the process returns to step S1 to detect the vehicle speed V again.

  When the timer 60 is set in the determination of step S3 (when the fixed time Ts is being measured by the timer 60), and when the vehicle speed V exceeds 10 [km] in the determination of step S2. In step S4, the acceleration G is calculated from the vehicle speed V and the minute time Δt.

  Next, in step S5, the inclination angle θa (see FIG. 3A) is detected by the inclination sensor 16 below the seat 20.

  In step S6, the lever operating angle θl (see FIG. 3C) of the brake lever 32 is detected by the brake lever operating angle sensor 30.

  Further, in step S7, the change speed Δθl / Δt of the lever operation angle θl is calculated.

  Next, in step S8, the steering angle sensor 26 detects the steering angle θs, which is the operating angle of the steering wheel 28 from the rotation center position of the steering wheel 28 (direction in which the steering wheel 28 is orthogonal to the axle direction) (θs = 0 [°]). To do.

  Further, in step S9, the travel distance is calculated.

  In step S10, other behavior is detected. The behavior here is the operating state of the ABS ECU 34, the position of the main switch 36, the position of the kill switch 38, the video data from the video camera 40, the operating state of the engine ECU 42, and the like.

  Next, in step S11, the current time tp is detected, and in step S12, the address A corresponding to the current time tp of the recording medium 64 is detected in steps S1, S4, S5, S6, S7, S8, S9, and S10. And behavior data as calculated values and data (the vehicle speed V, acceleration G, inclination angle θa, lever operation angle θl, lever operation angle θl change speed Δθl / Δt, steering angle θs, travel distance, operation of the ABS ECU 34) Status, position of the main switch 36, position of the kill switch 38, video data from the video camera 40, operating state of the engine ECU 42, and the like).

  Next, in step S13, it is determined whether or not the timer 60 is set to measure the fixed time Ts (during the measurement of the fixed time Ts by the timer 60).

  If the timer 60 is not set to time in step S13, then, in step S14, the behavior data recorded by the ECU 14 functioning as a comparison means is compared with a threshold value (including conditions). The threshold value (including the condition) is set in advance to a value (condition) where the occurrence of an unexpected situation is estimated (predicted) from the behavior data.

  Specifically, a. When acceleration G (calculated in step S4) decelerates over 1G (assuming sudden braking), b. When it is detected that the change speed Δθl / Δt (calculated in step S7) of the lever operating angle θl of the brake lever 32 exceeds the threshold (assuming a panic brake), c. When it is detected that the inclination angle θa of the vehicle 12 (detected in step S5) exceeds the threshold value (assuming the vehicle 12 falls) d. When it is detected that the steering angle θs (detected in step S8), which is the operating angle of the steering wheel 28, exceeds a threshold value (depending on the individual vehicle 12, here the threshold value is ± 30 °) (with a sudden handle) Assuming an attempt to avoid an accident), e. When an ABS operation signal indicating that the ABS has been operated is detected from the ABS ECU 34 (detection of step S10d) (assuming wheel lock associated with sudden braking), f. When the output signal of the video camera 40 attached to the tip becomes constant or becomes noise, g. When a signal indicating that the kill switch 38 is activated is detected, h. A signal indicating that the operation is stopped is detected from the engine ECU 42; i. Although the main switch 36 is in the ON position, the supply of electricity from the in-vehicle battery to the ECU 14 is stopped (time t5 in FIG. 4 described above).

  Next, in step S15, when it is determined in the comparison result in step S14 that any one of the behavior data exceeds the threshold (behavior data> threshold), this is used as a trigger to record from time t5 in step S16. The timer 60 is set to a certain time Ts, which is the time until the end of recording on the medium 64, and at the same time, the time counting (subtraction counter) for the certain time Ts is started. That is, recording for a certain time Ts is started from the time when the possibility of an accident or a near-miss occurrence occurs.

  Next, in step S17, it is determined whether or not the fixed time Ts is being measured by the timer 60. If the time is being measured, the process returns to step S1.

  At this time, even if it is determined in step S2 that the vehicle speed V is 10 [km] or less (including stoppage), the presence of the setting of the timer 60 in step S3 is affirmed. Therefore, the behavior data in steps S4 to S11 Is detected or calculated, and recorded in step S12. Since the timer 60 is set in step S13, the behavior data is displayed until a predetermined time Ts elapses according to the determination in step S17 since step S17 is executed. Is recorded on the recording medium 64, and the determination in step S17 becomes affirmative. At time t6 when a certain time Ts has elapsed from time t5 when the behavior data exceeds the threshold value, recording on the recording medium 64 is performed at step S18. finish.

  In this way, as described with reference to FIG. 4, the recording medium 64 has the current time tp (time t6) after a certain time Ts has elapsed from the current time tp (time t5) when the behavior data exceeds the threshold value. ), The update recording to the recording medium 64 is completed, and the recording medium 64 includes the behavior data for a predetermined time Ts (10 minutes) after the current time tp (time t5) when the behavior data exceeds the threshold, The behavior data for a total of one hour for a predetermined time (Tb2 + Tb1) (50 minutes) before time tp (time t5) is recorded.

  Thus, the two-wheeled riding recorder 10 according to the embodiment described above is a comparing means for comparing the behavior data with the threshold in the two-wheeled riding recorder 10 that continuously records the behavior data of the vehicle on the recording medium 64 (step S14). When the comparison means detects that the behavior data exceeds the threshold value (step S15), the recording control means (step S18) for ending the recording on the recording medium 64 after the lapse of the predetermined time Ts. Prepare. In this case, since the threshold is associated with the possibility of near-miss occurrence, changes in behavior data before and after the possibility of near-miss occurrence can be recorded. By analyzing the changes in the recorded behavior data over time, it becomes easier to investigate the cause of near-miss occurrence. Note that the recording capacity of the recording medium 64 may be relatively short, for example, 1 hour, so that a small-capacity memory can be used.

  For example, while traveling, the change speed θl / Δt of the operating angle θl of the brake lever 32 is continuously recorded on the recording medium 64, and when it is detected that the change speed θl / Δt exceeds the threshold value, Since the recording on the recording medium 64 is terminated after the time Ts elapses, the change with time of the change speed θl / Δt of the operating angle θl of the brake lever 32 before and after the occurrence of near-miss may be analyzed. This makes it easier to investigate the cause of near-miss occurrence.

  Further, during traveling, the inclination angle θa of the vehicle 12 is continuously recorded on the recording medium 64, and when it is detected that the inclination angle θa exceeds the threshold value, the recording medium 64 is recorded after a certain time Ts has elapsed. Thus, the cause of the occurrence of near-miss can be easily determined by analyzing the change with time of the vehicle inclination angle θa before and after the occurrence of near-miss.

  Further, during traveling, the steering angle θs of the steering 28 is continuously recorded on the recording medium 64, and when it is detected that the steering angle θs exceeds the threshold value, the recording medium 64 is recorded after a certain time Ts has elapsed. Therefore, the cause of the occurrence of near-miss can be easily determined by analyzing the change with time of the steering angle θs before and after the occurrence of near-miss.

  As described above, according to this embodiment, the threshold for ending the continuous recording is determined by paying attention to the behavior peculiar to the two-wheeled vehicle. For example, accurate riding before and after the time when there is a possibility of near-miss occurrence. Data (behavior data) can be acquired. By analyzing this riding data (behavior data), it becomes easy to investigate the cause of near-miss occurrence.

  Note that the present invention is not limited to the above-described embodiment, and, for example, the configuration in which the threshold value is manually set, the steer angle θs, the inclination angle θa, or the like maintains the traveling of the vehicle 12 based on the description in this specification. It goes without saying that various configurations such as adding a configuration for closing a fuel cut valve (not shown) when a value that cannot be performed can be adopted.

1 is a plan view of a vehicle that is a motorcycle incorporating a riding recorder according to an embodiment of the present invention. It is a block diagram which shows the structure of a riding recorder provided with ECU which functions as a recording control means. FIG. 3A is an explanatory diagram of an inclination angle, FIG. 3B is an explanatory diagram of a steering angle, and FIG. 3C is an explanatory diagram of a lever operation angle. It is a schematic diagram explaining how to record behavior data on a recording medium. It is a flowchart provided for operation | movement description of the riding recorder which concerns on this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Riding recorder 12 ... Vehicle 14 ... ECU16 ... Inclination sensor 26 ... Steer angle sensor 28 ... Steering 30 ... Brake lever operation angle sensor 32 ... Brake lever 60 ... Timer 62 ... Clock 64 ... Recording medium

Claims (4)

In a motorcycle riding recorder that continuously records vehicle behavior data on a recording medium,
A comparison means for comparing the behavior data with a threshold;
A recording control means for ending recording on the recording medium after a predetermined time has elapsed when it is detected by the comparison means that the behavior data has exceeded the threshold;
A riding recorder for a motorcycle, comprising: In a motorcycle riding recorder that continuously records vehicle behavior data on a recording medium,
An operation angle detection means for detecting an operation angle of the brake lever as the behavior data;
An operation angle change speed detecting means for detecting a change speed of the operation angle;
A comparison means for comparing whether or not the rate of change is greater than a threshold;
A recording control means for ending recording on the recording medium after elapse of a predetermined time when it is detected by the comparison means that the change speed has become larger than the threshold value;
A riding recorder for a motorcycle, comprising: In a motorcycle riding recorder that continuously records vehicle behavior data on a recording medium,
An inclination detecting means for detecting an inclination angle of the vehicle as the behavior data;
A comparison means for comparing whether the inclination angle is larger than a threshold value;
A recording control means for ending recording on the recording medium after a predetermined time has elapsed when it is detected by the comparison means that the inclination angle is larger than the threshold value;
A riding recorder for a motorcycle, comprising: In a motorcycle riding recorder that continuously records vehicle behavior data on a recording medium,
Steer angle detection means for detecting a steer angle as the behavior data;
A comparison means for comparing whether the steer angle is larger than a threshold value;
A recording control means for ending recording on the recording medium after a predetermined time has elapsed when the comparison means detects that the steering angle has become a value larger than the threshold;
A riding recorder for a motorcycle, comprising:

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