JP2008310765A - Event data recorder, motorcycle, accident determining device, information recording method, and accident determining method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve operation accuracy of an event data recorder. <P>SOLUTION: The event data recorder 20 includes: a recording device 25 for storing outputs of various kinds of sensors 22 and various kind of switches 23 mounted on the motorcycle 1; a tire air pressure sensors 35, 41 for detecting tire pressure of the front wheel 2 and rear wheel 3; an accident determining unit 30 for determining occurrence of an accident based on outputs of the tire air pressure sensors 35, 41; and a data output control unit 32 for controlling recording operation of the recording device 25 based on determination of the accident determining unit 30. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an event data recorder, a motorcycle, an accident determination device, an information recording method, and an accident determination method for saving the output of various devices when an accident occurs and enabling analysis of the accident situation.

2. Description of the Related Art Conventionally, an event data recorder (EDR) mounted on an automobile for recording information related to a traffic accident is known (see, for example, Patent Document 1). The event data recorder detects an impact at the time of an accident with an acceleration sensor, and records the output before and after the impact detection of various devices mounted on the automobile in a ROM (memory). Therefore, by analyzing the event data recorder after the accident, it becomes possible to grasp the behavior of the automobile such as the use of the brake and the vehicle speed at the time of the accident.
Japanese Unexamined Patent Publication No. 7-37133

  However, when an event data recorder triggered by the output of an acceleration sensor is applied to a light vehicle such as a motorcycle or a riding type rough terrain vehicle, the event data recorder is required for shocks that occur outside the accident. It is conceivable to operate at other times. In addition, when the motorcycle falls so as to slide on the ground and does not collide anywhere, the impact applied to the vehicle body at the time of the accident is small, and the event data recorder may not operate.

  Accordingly, an object of the present invention is to improve the operation accuracy of an event data recorder.

  The present invention has been made in view of the above circumstances, and an event data recorder according to a first invention includes a recording device for storing the output of a device mounted on a vehicle, and a tire for a vehicle wheel. A tire pressure sensor that detects air pressure; an accident determination device that determines occurrence of an accident based on an output of the tire pressure sensor; and a control device that controls a recording operation of the recording device based on the determination of the accident determination device. It is characterized by having.

  According to the above configuration, since the event data recorder is controlled based on the tire pressure of the vehicle, it is possible to prevent an impact other than an accident from operating the event data recorder as in the case of an acceleration sensor, and even in an accident where the impact is small. Can be stored in the recording device. Therefore, it is possible to improve the operation accuracy of the event data recorder mounted on the vehicle.

  At least a part of the wheel is provided to be exposed from the vehicle body, and the accident determination device, when a predetermined pressure increase occurs in the tire air pressure detected by the tire air pressure sensor during traveling of the vehicle, The structure which determines with it being accident occurrence may be sufficient.

  According to the above-described configuration, it is possible to determine the occurrence of a vehicle accident by detecting that the vehicle wheel collides with an object and the tire pressure rapidly increases during traveling, and the operation accuracy of the event data recorder is increased. This can be further improved.

  The accident determination device may be configured to determine that an accident has occurred when a predetermined pressure drop occurs in the tire air pressure detected by the tire air pressure sensor while the vehicle is running.

  According to the above-described configuration, it is possible to determine the occurrence of a vehicle accident by detecting that the wheel of the vehicle is separated from the ground due to a fall or the like and the tire air pressure is reduced, thereby further improving the operation accuracy of the event data recorder. Is possible.

  An input device operable by a driver of the vehicle may be provided, and the control device may be configured to control a recording operation of the recording device in accordance with an operation of the input device.

  According to the said structure, the output of the apparatus mounted in the vehicle can be preserve | saved at a recording device when a user likes, and a driving | running condition can be recorded also except at the time of an accident. Therefore, the user can perform various settings of the vehicle with reference to the recorded information, and convenience is improved.

  In the motorcycle according to the second aspect of the present invention, the event data recorder includes a recording device for storing an output of a device mounted on the vehicle body, a tire pressure sensor for detecting a tire pressure of a wheel, and a tire pressure sensor. An accident determination device that determines the occurrence of an accident based on an output and a control device that controls a recording operation of the recording device based on the determination of the accident determination device.

  According to the above configuration, since the event data recorder is controlled based on the tire pressure of the motorcycle, it is possible to prevent the event data recorder from malfunctioning due to an impact other than an accident like an acceleration sensor. Therefore, it is possible to improve the operation accuracy of the event data recorder mounted on the motorcycle.

  The apparatus may further include a bank angle detection device that detects a bank angle of the vehicle body, and the recording device may store an output of the bank angle detection device.

  According to the above configuration, since the transition of the bank angle of the vehicle body when the motorcycle falls is stored in the recording device, it is possible to analyze the posture of the vehicle body when an accident occurs.

  An engine mounted on the vehicle body and serving as a travel drive source may be further provided, and the recording device may be disposed behind a cylinder portion of the engine.

  According to the above configuration, since the cylinder portion of the engine protects the recording device of the event data recorder from the impact from the front on the motorcycle, the recorded content can be more reliably preserved even if an accident occurs.

  The accident determination device of the present invention is mounted on a vehicle having a tire air pressure sensor for detecting tire air pressure, determines the occurrence of an accident based on the output of the tire air pressure sensor, and outputs the determination result. To do.

  According to the said structure, since accident determination is made based on the tire pressure of a vehicle, it can suppress determining with being an accident by impacts other than an accident like an acceleration sensor.

  The information recording method according to the present invention includes a tire air pressure detecting step for detecting a tire air pressure of a vehicle wheel, an accident determining step for determining occurrence of an accident based on the tire air pressure, and an accident occurrence. And a recording step of recording output information output from a device mounted on the vehicle at least before an accident.

  According to the method, since the output information of the device is recorded based on the tire pressure, it is possible to prevent the recording process from being performed due to an impact other than an accident, and more reliably output the device even in an accident with a small impact. It can be recorded.

  In addition, the accident determination method of the present invention includes a tire air pressure detection process for detecting a tire air pressure of a vehicle wheel, and an accident determination process for determining the occurrence of an accident based on the tire air pressure.

  According to the above method, since the accident determination is made based on the tire pressure of the vehicle, it is possible to suppress the determination as an accident due to an impact other than the accident like an acceleration sensor.

  As is apparent from the above description, according to the present invention, it is possible to improve the operation accuracy of the event data recorder.

  Embodiments according to the present invention will be described below with reference to the drawings. In addition, the concept of the direction used in the following description is based on the direction seen from the driver who has boarded the motorcycle.

(First embodiment)
FIG. 1 is a left side view of a motorcycle 1 according to a first embodiment of the present invention. As shown in FIG. 1, the motorcycle 1 includes a front wheel 2 and a rear wheel 3, and the front wheel 2 is exposed at the front end. The front wheel 2 is rotatably supported by a lower end portion of a front fork 4 extending substantially in the vertical direction, and the front fork 4 is provided at an upper bracket (not shown) provided at the upper end portion thereof and below the upper bracket. It is supported by a steering shaft (not shown) through an under bracket (not shown). The steering shaft is rotatably supported by the head pipe 5. A bar-type handle 6 extending to the left and right is attached to the upper bracket. That is, the driver can turn the front wheel 2 in a desired direction by turning the handle 6 with the steering shaft as a turning shaft.

  The handle 6 gripped by the right hand of the driver is a throttle grip (not shown) that is rotated by twisting the wrist to adjust the traveling speed. A clutch lever 8 is provided in front of the handle 6 gripped by the driver's left hand. In front of the handle 6, a meter unit 9 that displays a traveling speed and an engine speed and has an input device 24 to be described later is disposed. Further, in the vicinity of the meter unit 9, a TPMS main body 21 constituting a tire pressure monitoring device (TPMS) described later is mounted. A front wheel TPMS transceiver 28 is attached to the front wheel 2, and a rear wheel TPMS transceiver 29 is attached to the rear wheel 3. That is, the TPMS main body 21 monitors the tire pressure by wirelessly communicating with the front wheel TPMS transceiver 28 and the TPMS transceiver 29.

  A pair of left and right main frames 10 extend rearward from the head pipe 5 while being slightly inclined downward, and a pair of left and right pivot frames 11 are connected to the rear portion of the main frame 10. The pivot frame 11 pivotally supports a front end portion of a swing arm 12 extending substantially in the front-rear direction, and a rear wheel 3 as a drive wheel is rotatably supported by the rear end portion of the swing arm 12. A fuel tank 13 is provided behind the handle 6, and a seat 14 for riding a driver is provided behind the fuel tank 13.

  The engine E is mounted between the front wheel 2 and the rear wheel 3 while being supported by the main frame 10 and the pivot frame 11. A throttle device 15 disposed inside the main frame 10 is connected to an intake port (not shown) of the engine E. An air cleaner box 16 disposed below the fuel tank 13 is connected to the upstream side of the throttle device 15 and is configured to take in outside air using traveling wind pressure from the front. A cowling 17 is provided so as to cover the engine E and the like from the front of the vehicle body to both sides of the vehicle body. An ECU 18 (electronic control unit) that performs various controls is accommodated in the internal space below the seat 14. Immediately behind the cylinder portion Es of the engine E, a recording device 25 (described later) fixed to the main frame 10 via a bracket (not shown) is disposed.

  FIG. 2 is a block diagram for explaining the event data recorder 20 mounted on the motorcycle 1 shown in FIG. As shown in FIG. 2, the event data recorder 20 includes an ECU 18, a TPMS main body 21, a front wheel TPMS transceiver 28, a rear wheel TPMS transceiver 29, various sensors 22 (devices), various switches 23 (devices), and an input device 24. , A recording device 25 and a meter unit 9 are provided. Connected to the ECU 18 are a TPMS main body 21 that detects tire air pressures of the front wheels 2 and the rear wheels 3, various sensors 22, various switches 23, and an input device 24 operated by a driver. The ECU 18 is connected to a recording device 25 for storing the outputs of the various sensors 22 and the various switches 23, and a meter unit 9 that enables writing / reading to / from the external recording medium 27.

  The various sensors 22 include an engine speed sensor, a throttle position sensor, a gear position sensor, a vehicle speed sensor, an acceleration sensor, a gyro sensor (bank angle detection device), a GPS sensor, a suspension stroke sensor, a grip pressure sensor, a water temperature sensor, a hydraulic pressure. Sensors, driver monitoring sensors, two-seater detection sensors, and the like are provided.

  The engine rotational speed sensor detects the rotational speed of the crankshaft of the engine E. The throttle position sensor detects the opening of the throttle valve of the throttle device 15. The gear position sensor detects the gear position of the transmission. The vehicle speed sensor detects the traveling speed of the motorcycle 1. The acceleration sensor detects the traveling acceleration of the motorcycle 1. The gyro sensor can detect the posture of the vehicle body, and can detect the bank angle of the vehicle body by detecting the angular velocity of the inclination of the vehicle body in the left-right direction. The GPS sensor is connected to a GPS (global positioning system) and acquires position information of the motorcycle 1. The suspension stroke sensor has a function of detecting the expansion / contraction state of the suspension that absorbs the shock of the motorcycle 1, and may be a displacement sensor that can detect the distance between the upper end portion and the lower end portion of the suspension, for example.

  The grip pressure sensor detects the pressure at which the driver is gripping the left and right grips of the handle 6. The water temperature sensor detects the temperature of the cooling water. The hydraulic sensor detects the pressure of various hydraulic lines. The driver monitoring sensor is a known sensor that grasps the driver's behavior such as blinking. The two-seater detection sensor is a sensor that detects a pressure distribution applied to the seat 14, a sensor that detects that the contraction amount of the rear suspension is greater than a predetermined value, or a footrest step for passengers. It is a sensor that detects the load on the.

  As the various switches 23, a brake switch, a clutch switch, a stand switch, and the like are provided. The brake switch detects the presence or absence of a brake operation. The clutch switch detects the presence or absence of clutch operation. The stand switch detects the descent / rise of the side stand that supports the vehicle body by placing it on the ground with the vehicle body slightly tilted when parking.

  The recording device 25 always stores the outputs of the TPMS main body 21, the various sensors 22 and the various switches 23 mounted on the motorcycle 1 in time series while the power is on, and the oldest is the amount exceeding the storage capacity. Overwrite and save from the data area. The recording device 25 is provided with a diagnostic connector 26 for connecting a personal computer or the like at a maintenance company or the like to download data in the recording device 25.

  The ECU 18 includes an accident determination unit 30, a trigger generation unit 31, a data output control unit 32, and a time generation unit 33. The accident determination unit 30 determines whether an accident has occurred in the motorcycle 1 based on tire pressure information output from the TPMS main body 21. That is, the TPMS main body 21 and the accident determination unit 30 constitute an accident determination device. Specifically, the accident determination unit 30 causes an accident that collides with an object from the front wheel 2 when a pressure increase occurs so that the tire pressure of the front wheel 2 received from the TPMS main body 21 becomes a first predetermined value or more during traveling. Is determined to have occurred. In addition, the accident determination unit 30 causes a fall or the like when a pressure drop occurs that the tire air pressure of the front wheels 2 and the rear wheels 3 received from the TPMS main body 21 during traveling is equal to or less than a second predetermined value over a predetermined time. It is determined that an accident has occurred in which the front wheel 2 and the rear wheel 3 are continuously separated from the ground. Moreover, the accident determination part 30 may determine an accident based on the time change of the tire pressure during driving | running | working. Specifically, it may be determined that an accident occurs when a change in tire air pressure over time exceeds a predetermined allowable range.

  The trigger generation unit 31 transmits a trigger to the data output control unit 32 when the accident determination unit 30 determines that an accident has occurred. When the data output control unit 32 receives a trigger from the trigger generation unit 31, the data output control unit 32 stores the outputs of the TPMS main body 21, the various sensors 22, and the various switches 23 in the recording device 25 so as not to be overwritten. In other words, the trigger generation unit 31 and the data output control unit 32 constitute a control device. Further, the data output control unit 32 stores the outputs of the TPMS main unit 21, the various sensors 22, and the various switches 23 in the recording device 25 when a recording start input unit 64 (FIG. 4) of the input device 24 described later is operated. In addition, when the recording end input unit 65 (FIG. 4) of the input device 24 is operated, it also has a function of ending the storing operation. The time generation unit 33 appropriately transmits the current time to the data output control unit 32.

  FIG. 3 is a block diagram illustrating a tire pressure monitoring device 19 (TPMS) used in the event data recorder 20 shown in FIG. As shown in FIG. 3, the tire pressure monitoring device 19 includes a front wheel TPMS transceiver 28, a rear wheel TPMS transceiver 29, and a TPMS main body 21.

  The front wheel TPMS transceiver 28 includes a front wheel tire pressure sensor 35, a calculation control unit 36, a reception unit 37, and a transmission unit 39. The front wheel tire pressure sensor 35 is a pressure sensor that detects the tire pressure of the front wheel 2. The arithmetic control unit 36 performs transmission / reception control. The receiving unit 37 includes a receiving antenna 38, and receives and demodulates a request signal wirelessly transmitted from the TPMS main unit 21 by the receiving antenna 38. The transmission unit 39 includes a transmission antenna 40, modulates a signal including tire air pressure information detected by the front wheel tire air pressure sensor 35, and wirelessly transmits the signal from the transmission antenna 40 as a response signal.

  The rear wheel TPMS transmitter / receiver 29 includes a rear wheel tire pressure sensor 41, a calculation control unit 42, a reception unit 43, and a transmission unit 45 as described above. The rear wheel tire pressure sensor 41 is a pressure sensor that detects the tire pressure of the rear wheel 3. The arithmetic control unit 42 performs transmission / reception control. The receiving unit 43 includes a receiving antenna 44, and receives and demodulates a request signal wirelessly transmitted from the TPMS main unit 21 by the receiving antenna 44. The transmission unit 45 includes a transmission antenna 46, modulates a signal including tire pressure information detected by the rear wheel tire pressure sensor 41, and wirelessly transmits the signal from the transmission antenna 46 as a response signal.

  The TPMS main body 21 includes a reception unit 50, a transmission unit 52, a calculation control unit 54, an alarm generation unit 55, a display unit 56, and an output unit 57. The receiving unit 50 includes a receiving antenna 51, and receives and demodulates response signals from the front wheel TPMS transceiver 28 and the rear wheel TPMS transceiver 29 by the receiving antenna 51. The transmission unit 52 includes a transmission antenna 53, modulates a request signal, and wirelessly transmits the request signal from the transmission antenna 53 to the front wheel TPMS transceiver 28 and the rear wheel TPMS transceiver 29. The arithmetic control unit 54 performs transmission / reception control and tire pressure management. The alarm generation unit 55 generates an alarm when the calculation control unit 54 recognizes an abnormality in the tire air pressure. When the calculation control unit 54 recognizes an abnormality in the tire air pressure, the display unit 56 displays a warning to notify the driver of the abnormality. The output unit 57 transmits tire pressure information to the external ECU 18.

  The TPMS main unit 21 alternately transmits request signals with destination data added to the two TPMS transceivers 28 and 29, and shifts the timing of signal transmission / reception with the TPMS transceivers 28 and 29. The TPMS transceivers 28 and 29 demodulate the received request signal and, if it is determined that the request signal is addressed to itself, modulate the signal including tire pressure information detected by the tire pressure sensors 35 and 41. And wirelessly transmit.

  The arithmetic control unit 54 of the TPMS main body 21 continuously transmits the received tire pressure information to the ECU 18 via the output unit 57. In addition, the arithmetic control unit 54 determines that the tire pressure is abnormal when the received tire pressure is equal to or less than a predetermined threshold, and instructs the alarm generation unit 55 to sound an alarm alarm and also instructs the display unit 56 to warn. Display.

  FIG. 4 is a plan view showing the meter unit 9 of the motorcycle 1 shown in FIG. As shown in FIG. 4, the meter unit 9 includes a speedometer 60, an engine speed meter 61, a display panel 62, an input device 24, and an external recording medium mounting unit 66, and a required arithmetic device is provided inside the meter unit 9. (Not shown) is provided. That is, the input device 24 is provided in a part of the meter unit 9. Specifically, the input device 24 includes a recording start input unit 64 and a recording end input unit 65 operated by the driver. The external recording medium mounting unit 66 has a slot into which an external recording medium 27 (FIG. 2) such as a memory card can be mounted, and enables writing / reading of data to / from the external recording medium 27.

  Next, the operation of the event data recorder 20 will be described. FIG. 5 is a flowchart for explaining the operation of the event data recorder shown in FIG. As shown in FIGS. 2 and 5, first, when the driver turns on the power, the tire pressure detection is started by the TPMS main unit 21 (step S1: tire pressure detection step). Then, the data output control unit 32 of the ECU 18 continuously stores the outputs of the TPMS main body 21, various sensors 22, and various switches 23 in the recording device 25, and the area of the oldest data that exceeds a predetermined storage capacity. It will be overwritten in order. Next, the accident determination unit 30 determines whether or not the motorcycle is in a traveling state by referring to an output of a speed sensor or the like, for example (step S2: traveling state determination step). If no, the process returns to step S2. In the case of Yes, the accident determination unit 30 receives from the TPMS main body 21 whether or not there has been a pressure increase in which the tire air pressure of the front wheels 2 detected by the TPMS main body 21 exceeds the first predetermined value. It is determined whether or not a pressure drop has occurred in which the tire air pressure of the front wheel 2 and the rear wheel 3 has become a second predetermined value or less over a predetermined time (step S3: accident determination step). If no, the process returns to step S2. In the case of Yes, the trigger generation part 31 transmits a trigger to the data output control part 32 (step S4: accident determination result output process). Then, the data output control unit 32 cannot overwrite the outputs of the TPMS main unit 21, the various sensors 22, and the various switches 23 to the recording device 25 for a predetermined time before and after the trigger reception time (for example, before and after 30 seconds). Save (step S5: recording process). Note that the fall determination step, the running state determination step, the accident determination step, the accident determination result output step, and the recording step are executed by a program stored in the ECU 18.

  The output items specific to the motorcycle stored in the recording device 25 include the bank angle of the vehicle body output by the gyro sensor (bank angle detection device), the grip grip pressure of the driver output by the grip pressure sensor, and the like. It is done. Regarding the bank angle, the transition of the bank angle of the vehicle body at the time of the accident is stored in the recording device 25, so that the posture of the vehicle body before and after the accident can be analyzed. Regarding the grip gripping pressure, the transition of the grip gripping pressure at the time of the accident is stored in the recording device 25, so that the timing at which the driver's hand leaves the steering wheel before and after the accident can be analyzed.

  Even when the accident determination unit 30 does not determine that an accident has occurred, the data output control unit 32 starts from the time when the driver operates the recording start input unit 64 of the input device 24. 21, the outputs of the various sensors 22 and the various switches 23 are stored in the recording device 25 so that they cannot be overwritten. When the recording end input unit 65 is operated by the driver, the data output control unit 32 stores the outputs of the TPMS main body 21, the various sensors 22, and the various switches 23 in the recording device 25 so as not to be overwritten. Stop that.

  In addition to these items, the data output control unit 32 also stores the following various analysis data in the recording device 25. FIG. 6 is a diagram for explaining the latest failure information stored in the recording device 25 of the event data recorder 20 shown in FIG. FIG. 7 is a diagram for explaining the accumulated time for each engine speed stored in the recording device 25 of the event data recorder 20 shown in FIG. FIG. 8 is a diagram for explaining failure frequency information stored in the recording device 25 of the event data recorder 20 shown in FIG.

  As shown in FIG. 6, the data output control unit 32 arranges the parts of the TPMS main body 21, the various sensors 22, and the various switches 23 that have failed in the past and information on the failure date and time from the latest date and time. It is stored in the recording device 25 as data. Further, as shown in FIG. 7, the data output control unit 32 accumulates the output of the engine speed sensor from the time of a new vehicle, classifies it for each engine speed, and accumulates and stores the usage time. Further, as shown in FIG. 8, the data output control unit 32 stores the past failure counts of the TPMS main unit 21, the various sensors 22, and the various switches 23 as data for each part in the recording device 25.

  Further, by connecting a personal computer or the like to the diagnostic connector 26 of the recording device 25 at a maintenance company or the like, the data of the recording device 25 can be downloaded to the personal computer. Furthermore, the data of the recording device 25 can be downloaded to the external recording medium 27 by mounting the external recording medium 27 on the external recording medium mounting portion 66 of the meter unit 9 by the driver. The data stored in the recording device 25 is held for the latest several minutes when the power is turned off. The latest several minutes of data may be written to the external recording medium 27 when the power is turned off, and the data may be cleared when the power is turned on.

  According to the above configuration, since the event data recorder 20 is controlled based on the tire pressure, it is possible to suppress an impact other than an accident from operating the event data recorder 20 like an acceleration sensor. Further, the occurrence of an accident can be determined by detecting that the front wheel 2 of the motorcycle 1 collides with an object and the tire air pressure rapidly increases during traveling. Furthermore, the occurrence of an accident can also be determined by detecting that the front wheel 2 and the rear wheel 3 of the motorcycle 1 are separated from the ground due to a fall or the like and the tire air pressure decreases. Therefore, the operation accuracy of the event data recorder 20 can be improved.

  In addition, an input device 24 operated by the driver is provided, and the outputs of the TPMS main body 21, various sensors 22, and various switches 23 are stored in the recording device 25 when the driver likes it. But you can record the driving situation. Therefore, the user can also perform various settings of the motorcycle 1 with reference to the recorded information, and convenience is improved. Further, since the recording device 25 is disposed immediately behind the cylinder portion Es of the engine E, even if the motorcycle 1 collides due to an accident and an impact from the front occurs, the cylinder portion Es of the engine E records. It is possible to protect the device 25 from impact and save the recorded contents. In the present embodiment, the accident determination is performed based on the tire pressure of the front wheel. However, the present invention is not limited thereto, and the accident determination may be performed based on the tire pressure of the rear wheel, for example.

(Second Embodiment)
The event data recorder of the second embodiment includes a fall determination device that determines whether the vehicle has fallen, and the control device controls the recording operation of the recording device based on the determination of the fall determination device. FIG. 9 is a block diagram illustrating an event data recorder 70 mounted on a motorcycle according to the second embodiment of the present invention. As shown in FIG. 9, the event data recorder 70 includes a fall sensor 71 that detects that the vehicle body has tilted at a predetermined angle or more in the left-right direction. The fall sensor 71 is connected to the ECU 72. The ECU 72 has a fall determination unit 73 that determines whether the motorcycle has fallen based on the output of the fall sensor 71. In other words, the fall sensor 71 and the fall determination unit 73 constitute a fall determination device. The trigger generation unit 31 transmits a trigger to the data output control unit 32 when the fall determination unit 73 determines that the motorcycle has fallen. Since other configurations are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

  FIG. 10 is a cross-sectional view seen from the front of the fall sensor 71 of the event data recorder 70 shown in FIG. FIG. 11 is a cross-sectional view seen from the side of the fall sensor 71 shown in FIG. As shown in FIGS. 10 and 11, in the fall sensor 71, a pendulum type magnetized movement 81 is rotatably supported on a rotating shaft 82 in a case 80. The case 80 includes a lower case 83 and an upper case 84, and the lower case 83 is provided with a mounting seat 83a for fixing to the pivot frame 11 or the main frame 10 (FIG. 1). A circuit board 86 is provided inside the upper case 84, and a hall IC 85 that detects a rotation state of the movement 81 over a predetermined angle is provided on the circuit board 86. The circuit board 86 has a detection circuit that outputs a detection signal when the Hall IC 85 is in a detection state.

  The upper case 84 is formed with a connector portion 84a that accommodates terminals for power supply, grounding, and detection signal output connected to the circuit board 86. The movement 81 has a notch 81a having a predetermined opening angle at the upper part thereof so as to be symmetrical with respect to the base position, and the lower part of the movement 81 is pointed with respect to the notch 81a with respect to the rotation shaft 82. It has the weight part 81b arrange | positioned in the symmetrical position. The Hall IC 85 is a unipolar sensitive type, and is configured to be in a detection state when the movement 81 rotates and the S poles magnetized at a predetermined position of the movement 81 face each other.

  With the above configuration, since the event data recorder 70 is controlled by using the fall of the motorcycle as a trigger, it is possible to prevent an impact other than an accident from operating the event data recorder 70, and the impact is small so as to slide on the ground. Even in the case of a fall, the outputs of the various sensors 22 and the various switches 23 can be reliably stored in the recording device 25 so as not to be overwritten. Therefore, the operation accuracy of the event data recorder 70 can be improved. In the present embodiment, the fall determination device is used in place of the accident determination device of the first embodiment. However, the accident determination device and the fall determination device are mounted on a motorcycle to detect an accident and / or a fall. In this case, the trigger generation unit 31 may transmit the trigger to the data output control unit 32.

(Third embodiment)
FIG. 12 is a front view of a motorcycle 90 according to the third embodiment of the present invention. FIG. 13 is a schematic diagram viewed from the front for explaining the fall sensor 92 mounted on the motorcycle 90 shown in FIG. As shown in FIG. 12, the fall sensor 92 of the present embodiment is made into a chip by the MEMS technology and incorporated in the ECU 91, and an acceleration sensor is used in which the acceleration detection direction is in the left-right direction. Specifically, as shown schematically in FIG. 13, the fall sensor 92 includes a fixed portion 93, a spring portion 94 having one end connected to the fixed portion 93 and extending in the horizontal direction, and the other end of the spring portion 94. And a displacement meter 96 that is fixedly disposed so that the relative distance between the weight portion 95 and the fixed portion 93 does not change and detects the relative distance in the left-right direction with respect to the weight portion 95.

  In normal times when the motorcycle 90 is running or jumping, the lateral acceleration of the spring portion 94 does not exceed a predetermined value because the acceleration in the lateral direction is not greatly applied to the vehicle body. The distance between 95 and the displacement meter 96 is generally L. When the vehicle body falls to the right side, gravity is applied to the weight portion 95 in the extending direction of the spring portion 94, so the distance between the weight portion 95 and the displacement meter 96 is L-ΔL. On the other hand, when the vehicle body falls to the left side, gravity is applied to the weight portion 95 in the contraction direction of the spring portion 94, so the distance between the weight portion 95 and the displacement meter 96 is L + ΔL. That is, when the distance between the weight portion 95 and the displacement meter 96 becomes L−ΔL or L + ΔL, the ECU 91 determines that the motorcycle 90 is in a fallen state.

  According to the above configuration, since the fall sensor 92 is incorporated in the ECU 91, a cable connecting the sensor and the ECU becomes unnecessary, and an error due to disconnection or the like can be prevented. Since other configurations are the same as those of the second embodiment, description thereof is omitted.

(Fourth embodiment)
The event data recorder of the fourth embodiment includes a departure determination device that determines that the driver has left the vehicle, and the control device controls the recording operation of the recording device based on the determination of the departure determination device. It is. FIG. 14 is a block diagram illustrating an event data recorder 100 mounted on a motorcycle according to the fourth embodiment of the present invention. As shown in FIG. 14, the event data recorder 100 is applied to a motorcycle having an electronic key system. The electronic key system is automatically unlocked so that the engine can be started when the user holding the electronic key 101 approaches the motorcycle, and the engine is started when the user holding the electronic key 101 moves away from the motorcycle. It is a system that is automatically locked to make it impossible. Specifically, the motorcycle is equipped with an electronic key ECU 102 having a wireless transmission / reception unit (not shown), and the user carries the card-type electronic key 101 in a pocket or the like.

  The electronic key ECU 102 intermittently transmits a request signal. When the electronic key 101 enters the area where the request signal can be received, a response signal such as an ID code is wirelessly transmitted from the electronic key 101. When the electronic key ECU 102 receives the response signal, the electronic key ECU 102 authenticates the ID code. If the authentication is established, the electronic key ECU 102 is unlocked. Further, even after the user rides on the motorcycle and starts the engine, communication between the electronic key 101 and the electronic key ECU 102 is performed in order to check whether or not the electronic key 101 exists within a predetermined area. Is done intermittently.

  The electronic key ECU 102 is connected to the main ECU 104. Further, a speed sensor 103 for detecting the traveling speed of the motorcycle is connected to the ECU 104 as means for detecting whether or not the motorcycle is traveling. The ECU 104 includes a departure determination unit 105 that determines whether or not the driver has left the motorcycle based on information from the electronic key ECU 102 and the speed sensor 103. That is, the electronic key 101, the electronic key ECU 102, the speed sensor 103, and the separation determination unit 105 constitute a separation determination device.

  Specifically, the separation determination unit 105 receives a notification from the electronic key ECU 102 that the electronic key 101 is no longer in the predetermined area, and the traveling speed detected by the speed sensor 103 at the time of reception. If is not zero, it is determined that the driver has thrown out of the motorcycle and has left during traveling. The trigger generation unit 31 transmits a trigger to the data output control unit 32 when the departure determination unit 105 determines that the driver has left the motorcycle. Since other configurations are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

  According to the above configuration, a motorcycle accident can be detected without using an acceleration sensor dedicated to collision detection, and the number of parts can be reduced. In this embodiment, the departure determination device is used instead of the accident determination device of the first embodiment or the fall determination device of the second and third embodiments, but the accident determination device and / or the fall determination device and the departure determination are used. The apparatus may be mounted on a motorcycle together with the apparatus, and the trigger generation unit 31 may transmit a trigger to the data output control unit 32 when an accident, a fall and / or separation is detected. Further, in this embodiment, an electronic key system is used, but it is detected that the driver has left the motorcycle by detecting the intensity of the radio wave that is always transmitted by the mobile phone possessed by the driver. It may be.

(Fifth embodiment)
FIG. 15 is a block diagram for explaining an event data recorder 110 mounted on a motorcycle according to a fifth embodiment of the present invention. As shown in FIG. 15, the event data recorder 110 includes a body fixing device 111 such as an arm band that is fixed to the body of the driver, and a connection body 113 such as a string having one end fixed to the body fixing device 111. A connector portion (not shown) at the other end of the coupling body 113 is provided with a connector 112 that is detachably connected. The connector 112 and a connector portion (not shown) of the coupling body 113 are connected to each other during traveling, and the body fixing tool 111 is separated from the connector 112 by a predetermined distance or more, and the coupling body 113 has a tensile force of a predetermined value or more. By being loaded, the connector portion (not shown) of the coupling body 113 is configured to be detached from the connector 112.

  The connector 112 is connected to the ECU 114. Further, a speed sensor 103 for detecting the traveling speed of the motorcycle is connected to the ECU 114 as a means for detecting whether or not the motorcycle is traveling. The ECU 114 includes a departure determination unit 115 that determines whether the driver has left the motorcycle based on information from the connector 112 and the speed sensor 103. That is, the body fixing tool 111, the coupling body 113, the connector 112, the speed sensor 103, and the separation determination unit 115 constitute a separation determination device.

  Specifically, the detachment determination unit 115 detects that the connector portion (not shown) of the coupled body 113 is detached from the connector 112, and the traveling speed detected by the speed sensor 103 at the time of reception is detected. If it is not zero, it is determined that the driver is thrown away from the motorcycle while traveling. The trigger generation unit 31 transmits a trigger to the data output control unit 32 when the departure determination unit 115 determines that the driver has left the motorcycle. Since other configurations are the same as those in the fourth embodiment, the same reference numerals are given and description thereof is omitted.

(Sixth embodiment)
FIG. 16 is a block diagram for explaining an event data recorder 120 mounted on a motorcycle according to a sixth embodiment of the present invention. As shown in FIG. 16, the event data recorder 120 includes a seat pressure sensor 121 that detects that the driver is seated on the seat 14 (FIG. 1), and the driver holds the grip of the handle 6 (FIG. 1). A grip pressure sensor 122 that detects gripping is provided. The sheet pressure sensor 121 and the grip pressure sensor 122 are connected to the ECU 123. Further, a speed sensor 103 for detecting the traveling speed of the motorcycle is connected to the ECU 123 as means for detecting whether or not the motorcycle is traveling. The ECU 123 includes a separation determination unit 124 that determines whether or not the driver has left the motorcycle based on outputs from the seat pressure sensor 121, the grip pressure sensor 122, and the speed sensor 103. In other words, the seat pressure sensor 121, the grip pressure sensor 122, and the detachment determination unit 124 constitute a detachment determination device.

  Specifically, the separation determination unit 124 determines that the output of the seat pressure sensor 121 is a predetermined value or less (the load on the seat 14 is a predetermined value or less), and the output of the grip pressure sensor 122 is a predetermined value or less (the handle 6 When the grip load is equal to or less than a predetermined value and the traveling speed detected by the speed sensor 103 is not zero, the driver's hand is separated from the handle 6 (FIG. 1) and the driver is seat 14 (FIG. 1). It is determined that the driver is thrown out of the motorcycle while traveling away from 1). The trigger generation unit 31 transmits a trigger to the data output control unit 32 when the departure determination unit 124 determines that the driver has been thrown out of the motorcycle. Since other configurations are the same as those in the fourth embodiment, the same reference numerals are given and description thereof is omitted.

  In each of the above embodiments, the motorcycle has been described as an example. However, the event data recorder according to the present invention can be applied not only to the motorcycle but also to other vehicles. Further, the event data recorder according to the present invention is not limited to the above-described embodiments, and the configuration can be changed, added, or deleted without departing from the gist of the present invention.

  As described above, the event data recorder, the motorcycle, the accident determination device, the information recording method, and the accident determination method according to the present invention have excellent effects that can improve the operation accuracy of the event data recorder. It can be widely applied to vehicles such as motorcycles that can demonstrate the significance of the above.

1 is a left side view of a motorcycle according to a first embodiment of the present invention. FIG. 2 is a block diagram for explaining an event data recorder mounted on the motorcycle shown in FIG. 1. It is a block diagram explaining the tire pressure monitoring apparatus (TPMS) used for the event data recorder shown in FIG. Fig. 2 is a plan view showing a meter unit of the motorcycle shown in Fig. 1. It is a flowchart explaining operation | movement of the event data recorder shown in FIG. It is drawing explaining the newest failure information preserve | saved at the recording device of the event data recorder shown in FIG. It is drawing explaining the accumulation time for every engine speed preserve | saved at the recording device of the event data recorder shown in FIG. It is drawing explaining the frequency | count information of failure preserve | saved at the recording device of the event data recorder shown in FIG. It is a block diagram explaining the event data recorder mounted in the motorcycle which concerns on 2nd Embodiment of this invention. It is sectional drawing seen from the front of the fall sensor of the event data recorder shown in FIG. It is sectional drawing seen from the side of the fall sensor shown in FIG. FIG. 6 is a front view of a motorcycle according to a third embodiment of the present invention. FIG. 13 is a schematic diagram viewed from the front for explaining a fall sensor mounted on the motorcycle shown in FIG. 12. It is a block diagram explaining the event data recorder mounted in the motorcycle which concerns on 4th Embodiment of this invention. It is a block diagram explaining the event data recorder mounted in the motorcycle which concerns on 5th Embodiment of this invention. It is a block diagram explaining the event data recorder mounted in the motorcycle which concerns on 6th Embodiment of this invention.

Explanation of symbols

1,90 Motorcycle 2 Front wheel 20, 70, 100, 110, 120 Event data recorder 22 Various sensors (equipment)
23 Various switches (equipment)
24 Input Device 25 Recording Device 30 Accident Determination Unit 35 Front Wheel Tire Air Pressure Sensor 41 Rear Wheel Tire Air Pressure Sensor 71, 92 Falling Sensor 73 Falling Determination Unit 105, 115, 124 Detachment Determination Unit E Engine Es Cylinder Unit

Claims (10)

A recording device for storing the output of equipment mounted on the vehicle;
A tire pressure sensor for detecting the tire pressure of a vehicle wheel;
An accident determination device that determines the occurrence of an accident based on the output of the tire pressure sensor;
An event data recorder comprising: a control device that controls a recording operation of the recording device based on determination by the accident determination device. At least a part of the wheel is provided exposed from the vehicle body,
The event data according to claim 1, wherein the accident determination device is configured to determine that an accident has occurred when a predetermined pressure increase occurs in the tire air pressure detected by the tire air pressure sensor while the vehicle is running. Recorder.   3. The configuration according to claim 1, wherein the accident determination device is configured to determine that an accident has occurred when a predetermined pressure drop occurs in a tire air pressure detected by the tire air pressure sensor while the vehicle is running. Event data recorder. An input device that can be operated by the driver of the vehicle,
The event data recorder according to claim 1, wherein the control device is configured to control a recording operation of the recording device in accordance with an operation of the input device. With event data recorder,
The event data recorder includes a recording device for storing an output of a device mounted on a vehicle body, a tire air pressure sensor that detects tire air pressure of a wheel, and an accident that determines the occurrence of an accident based on the output of the tire air pressure sensor. A motorcycle comprising: a determination device; and a control device that controls a recording operation of the recording device based on the determination of the accident determination device. A bank angle detector for detecting the bank angle of the vehicle body;
The motorcycle according to claim 5, wherein the recording device is configured to store an output of the bank angle detection device. It further includes an engine mounted on the vehicle body and serving as a travel drive source,
The motorcycle according to claim 5 or 6, wherein the recording device is disposed behind a cylinder portion of the engine. Mounted on a vehicle having a tire pressure sensor for detecting tire pressure,
An accident determination device that determines the occurrence of an accident based on the output of the tire pressure sensor and outputs the determination result. A tire pressure detecting step for detecting a tire pressure of a vehicle wheel;
An accident determination step of determining the occurrence of an accident based on the tire pressure;
An information recording method comprising: a recording step of recording output information output from a device mounted on a vehicle at least before an accident when it is determined that an accident has occurred. A tire pressure detecting step for detecting a tire pressure of a vehicle wheel;
An accident determination method comprising: an accident determination step of determining occurrence of an accident based on the tire pressure.

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