JP2008038775A - Idling stop device for motorcycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive and high performance idling stop device for a motorcycle, easy in installation. <P>SOLUTION: An acceleration sensor 3 is a triaxial acceleration sensor for detecting a state of a car body in the XYZ direction. Stopping of a vehicle is determined from an integral value of acceleration and deceleration, by detecting the acceleration-deceleration of the vehicle, by adjusting the X axis of the acceleration sensor 3 in the advancing direction of the vehicle. Whether or not the vehicle turns is also detected by adjusting the Y axis of the acceleration sensor 3 in the turning direction of the vehicle. Whether or not to be a traveling state is further detected by detecting vibration of the vehicle, by adjusting the Z axis of the acceleration sensor 3 in the gravitational direction. Or whether or not the vehicle stops on an upward slope is determined by detecting an inclination in its Z axis direction. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an idling stop device for a motorcycle that stops idling of a vehicle such as a motorcycle.

  2. Description of the Related Art Conventionally, in a vehicle such as a motorcycle, an attempt has been made to stop an idling engine when the vehicle is stopped in consideration of low fuel consumption and environmental measures. This idling stop device generally measures the vehicle speed of a vehicle with a vehicle speed sensor, and stops an engine after a certain time has elapsed since the vehicle stopped.

As another method of idling stop, for example, there is a method as disclosed in Patent Document 1. Patent Document 1 discloses an idling stop device using an idle stop selection switch, a water temperature sensor, and a throttle opening sensor. In this example, the throttle opening sensor detects that the throttle is in the closed position when the water temperature sensor detects that the water temperature is equal to or higher than the predetermined temperature with the idle stop selection switch selected. In this case, ignition by the spark plug is stopped.
JP 2002-235574 A

  However, some motorcycles have a mechanical speedometer and it is difficult to electrically detect the vehicle speed. In that case, it is impossible to stop the engine idling by measuring the vehicle speed with a vehicle speed sensor. In particular, in Southeast Asia and the like, inexpensive motorcycles occupy a large number and are often not equipped with a vehicle speed sensor, and it has been difficult to stop idling using the vehicle speed sensor.

  In such a case, it may be possible to retrofit the idling stop device. However, for example, an idling stop device using a gyro sensor is expensive. Further, when retrofitting an idling stop device using a vehicle speed sensor, there is a problem that wiring becomes complicated. Further, in the conventional idling stop device, for example, idling of the engine stops even when waiting for a right turn in an intersection or when stopping on an uphill, and there is a case where there is a delay in restarting.

  The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a high-performance idling stop device for a motorcycle that is inexpensive, simple to mount, and high performance.

  In order to achieve such an object, the present invention provides an idling stop device for a motorcycle for stopping idling of a motorcycle, an acceleration sensor for measuring the acceleration of the motorcycle, and an acceleration for detecting a measurement value of the acceleration sensor. A configuration is provided that includes a detection unit and a calculation unit that calculates a vehicle speed from the detected acceleration, and determines the idling stop from the calculation result.

  As a result, it is possible to calculate the vehicle speed from the measurement data of the acceleration sensor and perform idling stop, so even in motorcycles that are not equipped with a vehicle speed sensor, it is possible to perform idling stop, reducing fuel consumption and environmental measures It is effective for. Further, since the acceleration sensor can be disposed on the control board, it is easy to mount. Further, since the configuration is relatively simple, the idling stop device can be made inexpensive. Furthermore, since the acceleration sensor is used, it is possible to measure the state of the vehicle such as the tilt and turn of the vehicle that could not be measured by the conventional vehicle speed sensor, and to realize a high-performance idling stop device that takes into account the control.

  In the present invention, it is also possible for the calculating means to determine that the motorcycle is stopped when the integrated values of acceleration and deceleration are the same. Thereby, even in a vehicle not equipped with a vehicle speed sensor, the vehicle speed and the like can be measured, and a suitable idling stop can be performed.

  In the present invention, it is preferable not to stop idling when it is detected from the measured value of the turning direction of the acceleration sensor that the motorcycle is turning and waiting for a right turn in an intersection. . As a result, idling does not stop when waiting for a right turn at an intersection as in the prior art.

  Further, the present invention may be configured such that the idling is not stopped by detecting that the motorcycle is stopped on an uphill from the measurement value in the gravity direction of the acceleration sensor. As a result, idling is not stopped when the vehicle stops on an uphill as in the prior art.

  In the present invention, it is preferable to determine whether to stop idling in consideration of the state of various sensors and switches provided in the motorcycle. As a result, an even higher performance idling stop can be realized.

  Furthermore, the present invention may be configured to include an alarm device that emits an alarm sound when a vehicle is likely to be stolen, and a drive unit that drives the alarm device. As a result, when the vehicle is about to be stolen, the acceleration sensor can detect when the vehicle is inadvertently vibrated or moved and issue an alarm, so it has a high-performance idling with anti-theft function. A stop device can be provided.

  A wheel bearing device according to the present invention is an idling stop device for a motorcycle for stopping idling of a motorcycle, an acceleration sensor for measuring an acceleration of the motorcycle, and an acceleration detection for detecting a measurement value of the acceleration sensor. Means and a calculation means for calculating the vehicle speed from the detected acceleration, and adopting a configuration for determining stop of idling from the result of the calculation, even in a motorcycle not equipped with a vehicle speed sensor, Idling stop can be performed, which is effective for reducing fuel consumption and environmental measures. Further, since the acceleration sensor is used, the idling stop device can be made inexpensive. Further, the structure is relatively simple and easy to install. Furthermore, since the acceleration sensor is used, it is possible to measure the state of the vehicle such as the tilt and turn of the vehicle that could not be measured by the conventional vehicle speed sensor, and to realize a high-performance idling stop device that takes into account the control.

  In an idling stop device for a motorcycle for stopping idling of a motorcycle, an acceleration sensor for measuring the acceleration of the motorcycle, an acceleration detecting means for detecting a measured value of the acceleration sensor, and a vehicle speed from the detected acceleration. And calculating means for calculating idling stoppage from the result of the calculation.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a configuration diagram showing connection of an idling stop device for a motorcycle according to the present invention. FIG. 2 is a configuration diagram showing a detailed configuration of the idling stop device for the motorcycle.

  In FIG. 2, an idling stop device 1 for a motorcycle includes an idling stop control circuit 2, an acceleration sensor 3, a relay (RY) 4, and transistors (TR) 5-7. The idling stop control circuit 2 includes an acceleration detection unit 21 that detects a measurement value of the acceleration sensor 3 and an arithmetic circuit 22 that calculates a vehicle speed and the like from the detected acceleration. The acceleration sensor 3 is installed on a part of the control board having the idling stop control circuit 2 and the like.

  As shown in FIGS. 1 and 2, the idling stop device 1 for a motorcycle includes an ignition switch 10, a throttle position sensor 11, a crank angle sensor 12, a vehicle speed sensor 13, a brake switch 14, a blinker switch 15, an ECU ( An engine control unit) 16, a starter 17, and an indicator lamp 18 are connected.

  The ignition switch 10 is a main switch of the vehicle, and enters a state where the engine can be started by inserting and rotating a key.

  The throttle position sensor 11 is a sensor for detecting the throttle opening, and is installed in an electronically controlled ECU-equipped vehicle. When the driver opens the accelerator, the output voltage of the throttle position sensor 11 changes. The idling stop control circuit 2 detects this voltage change, reads the driver's intention to start, and when the engine is stopped, drives the transistor 6 and operates the starter motor to start the engine.

  The engine speed is read by the crank angle sensor 12, and the state of the acceleration sensor 3 and the state of the throttle position sensor 11 are taken into consideration, and if it is the idling speed, it is determined that the vehicle is stopped. Further, in a vehicle equipped with a vehicle speed sensor, a vehicle speed sensor 13 is connected to detect the stop of the vehicle. Note that these are not necessarily required, considering the case where the idling stop device according to the present invention is mounted on a motorcycle of a medium size or larger. Further, the idling stop device of the present invention can calculate the vehicle speed from the detection data of the acceleration sensor, and is particularly effective when used in a vehicle not equipped with a vehicle speed sensor, but the present invention is limited to this. Instead, the idling stop device of the present invention can be attached to a vehicle equipped with a vehicle speed sensor to perform idling stop control with higher performance.

  The brake switch 14 is a switch for lighting a brake lamp, and may be used as an interlock when starting the engine. For safety, in a vehicle in which the engine cannot be started unless the brake is applied, it is necessary to confirm whether the brake is applied before the starter motor 17 is operated. For a vehicle in which the brake is not in the engine start interlock, the brake switch 14 can be read by the idling stop control circuit 2 to control the engine start in order to prevent the vehicle from jumping out.

  The blinker switch 15 is a switch for blinking the blinker lamp, and determines whether or not it has stopped in the intersection in consideration of the state of the acceleration sensor 3. That is, in the state where the blinker lamp is blinking, when turning the vehicle body and entering the intersection and stopping, the state of the blinker switch 15 is detected and the data of the turning direction is detected from the acceleration sensor 3, From the detection data of both, it is considered that it stopped in the intersection. Here, it is possible to control the engine not to stop only by the state of the blinker switch 15 without considering the acceleration sensor 3, but this makes it impossible to stop idling when waiting for a signal before the intersection at the time of a right turn. End up. Therefore, the acceleration sensor 3 is required. In addition, it is also possible to detect only the data of the turning direction of the acceleration sensor 3 without detecting the state of the winker switch 15 and determine whether or not the stop is in the intersection.

  The ECU 16 is an engine control unit that controls the engine. The ignition switch 10 has a wiring for turning on / off the power supply to the ECU 16. Further, the ignition switch 10 and the ECU 16 are configured to be turned ON / OFF by the contact of the relay 4. That is, when the contact of the relay 4 is turned off, power is not supplied to the ECU 16, the engine is stopped, and an idling stop function is realized.

  The starter 17 is a starter motor for starting the engine, and the transistor 6 drives a starter relay to start the engine.

  The acceleration sensor 3 is a triaxial acceleration sensor that detects the state of the vehicle body in the XYZ directions. The X axis of the acceleration sensor 3 is aligned with the traveling direction of the vehicle, the acceleration / deceleration of the vehicle is detected, and the stop of the vehicle is determined from the integrated value of acceleration and deceleration. That is, as will be described in detail later, if the integrated values of acceleration and deceleration are substantially the same, the vehicle speed is regarded as zero and it is determined that the vehicle is stopped. At this time, it is preferable to correct the influence of the turning direction acceleration and the influence of the gravitational acceleration from the traveling direction acceleration, obtain the vehicle speed, and determine whether or not the engine is stopped.

  Further, the Y axis of the acceleration sensor 3 detects whether the vehicle has turned in accordance with the turning direction of the vehicle. That is, when the vehicle body turns to enter the intersection and stop, the data of the turning direction is detected from the acceleration sensor 3, and the vehicle is considered to have stopped at the intersection. Further, the Z-axis of the acceleration sensor 3 detects the vibration of the vehicle in accordance with the direction of gravity, and detects whether or not the vehicle is in a running state. Alternatively, the inclination in the Z-axis direction is detected to determine whether the vehicle has stopped on an uphill. When stopping on an uphill, the idling is not stopped in order to eliminate the delay in restarting.

Next, an operation method of the idling stop device 1 for a motorcycle in the present embodiment will be described.
FIG. 3 is a flowchart showing a method of operating the idling stop device for a motorcycle according to the present invention. In the following description of the present embodiment, the reference numerals in parentheses correspond to the reference numerals in the flowchart of FIG.

  First, the state of the ignition switch 10 is monitored (S100), and specific control is started when the ignition switch is ON (S100-Yes). Next, the vehicle speed and the travel distance are calculated from the integrated value of the vehicle acceleration of the acceleration sensor 3, or the throttle position sensor 11, the crank angle sensor 12, or the vehicle speed sensor 13 is monitored (S101). It is determined that the vehicle has traveled (S101-Yes). This is to check if the vehicle has been running for a certain period of time, because if the engine is stopped for a while after the engine has started, the engine has stopped, it is not easy to use. Is a matter of judgment.

  The state of the acceleration sensor 3 is monitored (S102), and if the integrated values of acceleration and deceleration are the same, it is determined that the vehicle is stopped (S102-Yes). In addition, the crank angle sensor 12 is monitored, and the engine speed is idle, the throttle position sensor 11 is fully closed, the acceleration sensor 3 indicates no running vibration, etc. ( S102), it can be determined that the vehicle is stopped (S102-Yes). If the vehicle speed sensor 13 is connected, the sensor input can be monitored (S102), and it can be determined that the vehicle is stopped (S102-Yes).

  In addition to the vehicle stop (S102-Yes), the throttle position sensor 11 is monitored (S103), the fully closed position (S103-Yes), the brake switch 14 is monitored (S104), and the brake is ON. Even if there is something (S104-Yes), the voltage of the ignition switch 10 is measured (S105), the battery voltage is normal and the next engine can be started (S105-Yes). good.

  When the turn signal switch 15 is monitored and the acceleration in the turning direction of the acceleration sensor 3 is detected (S106), it is determined that the vehicle stops within the intersection (S106-Yes), or the inclination of the acceleration sensor 3 in the gravitational direction. From (S107), when it is determined that the vehicle is going uphill (S107-Yes), the engine may not stop. On the other hand, when it is determined that the vehicle is not stopped at the intersection (S106-No), or when it is determined that the vehicle is not uphill (S107-No), the engine stop condition can be set.

  When the engine stop condition (S102 to S107) is satisfied, TR5 is operated to operate RY4, and an engine stop command (S109) is sent to the ECU 16 to stop idling. This may control the power supply of the ECU 16, or may use a safety function of the vehicle such as forgetting to put out the side stand or a fall sensor. Moreover, it can also be set as the structure which stops an engine after predetermined time, after satisfy | filling engine stop conditions.

  The engine speed is monitored (S110), and when engine stop is confirmed (S110-Yes), the engine stop command to the ECU 16 is canceled (S111).

  During idling stop, the brake switch 14 is monitored (S112), the brake is turned off (S112-No), or the throttle position sensor 11 is monitored (S113), and the driver opens the accelerator (S113). S113-No) considers that the driver has an intention to start, and shifts to the engine restart preparation stage.

  Depending on the vehicle, for safety reasons, the engine may not be started unless the brake is applied. To prevent popping out, the brake switch 13 is monitored (S114). If the brake is ON (S114-Yes), TR6 is operated, the starter motor 17 is operated (S115), and the engine is started. Whether the engine has been started is monitored by the crank angle sensor 12 (S116). If the idling speed is reached, it is determined that the engine is started (S116-Yes), and the starter motor 17 is stopped (S117).

Next, an embodiment in which a theft prevention function is added to the idling stop device for motorcycles will be described.
FIG. 4 is a configuration diagram showing a detailed configuration when a theft prevention function is added to the motorcycle idling stop device according to the present invention. FIG. 5 is a flowchart showing an operation method when antitheft is added to the motorcycle idling stop device. In this embodiment, a transistor of an alarm device driving circuit and an alarm device are added. In addition, the same components and parts as those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 4, the idling stop device 31 for a motorcycle according to the present invention includes an alarm device 9 that emits an alarm sound when the vehicle is about to be stolen, and driving means for driving the alarm device 9. TR8 is provided. The idling stop control circuit 2 is provided with a control circuit for controlling the alarm device 9.

  Next, the operation method of the anti-theft function in this embodiment will be described with reference to the flowchart of FIG.

  First, the state of the ignition switch 10 is monitored (S100), and when the ignition switch is OFF, control of the anti-theft function is started (S100-No). When the ignition switch is ON (S100-Yes), the process proceeds to the idling stop function of FIG.

  When the ignition switch 10 is turned off, the standby time starts counting, and at the same time, it is monitored whether or not a predetermined time has elapsed (S201). A condition for invalidating the anti-theft function when the ignition switch 10 is turned off may be added.

  After the standby time has elapsed, anti-theft is set (S202). As specific contents of the anti-theft set, first, a set confirmation sound indicating that anti-theft is set is sounded. The set confirmation sound is generated using the alarm device 9. Next, the indicator lamp 18 is blinked to indicate that the theft is in a warning state (S203). In this state, the driver leaves the vehicle.

  When the key is inserted into the ignition switch 10 and turned ON in the alarm state of theft (S204-Yes), the antitheft is canceled (S207). At this time, an anti-theft release sound may be sounded. The release confirmation sound is generated using the alarm device 9. Further, for the anti-theft release, a combined operation other than the ON operation of the ignition switch 10 may be added.

  In the theft alert state, the idling stop control circuit 2 monitors the acceleration sensor 3 (S205). Then, when the acceleration sensor 3 reacts and detects that the vehicle has inadvertently vibrated or moved (S205-Yes), an alarm is issued (S206). At this time, it is also possible to control RY4 to prevent an act of starting the engine illegally.

Next, a speed measurement method in the traveling direction using an acceleration sensor will be described.
FIG. 6 is a detailed configuration diagram of the acceleration sensor input unit of the idling stop device for a motorcycle according to the present invention. FIG. 7 is a flowchart showing an operation method of speed judgment using the acceleration sensor of the idling stop device for the motorcycle.

  In FIG. 6, an amplifier 31, a fourth-order Butterworth low-pass filter 32, and a CPU 33 are connected to the acceleration sensor 3. The amplifier 31 performs offset correction of the output value of the acceleration sensor with a gain of 10 times, converts it to a voltage level that can be quantized by an A / D converter built in the CPU 33, and corrects an offset error of the acceleration sensor 3. To do. The fourth-order Butterworth low-pass filter 32 has a cutoff frequency of 10 Hz, and removes noise components from the output value of the amplifier 31. The CPU 33 incorporates a 10-bit A / D converter, and the converter converts the output value of the fourth-order Butterworth low-pass filter 32 from analog to digital.

    Next, the speed judgment operation using the acceleration sensor will be described with reference to the flowchart of FIG.

  In FIG. 7, first, the state of the ignition switch 10 is monitored (S100), and when the ignition switch is ON, the speed is determined (S100-Yes). In the speed determination, first, the CPU 33 performs A / D conversion on the output voltage of the acceleration sensor 3. (S301) When the acceleration in the X-axis (vehicle traveling direction) is larger than a predetermined acceleration / deceleration acceleration threshold (S302-Yes), the sign is added in the case of acceleration, and in the case of deceleration. The sign is negative and added to the integrated value (S303).

  Here, if the X-axis acceleration is smaller than the acceleration / deceleration acceleration threshold value (S302-No), the acceleration value may be affected by the acceleration in the gravity direction or the acceleration in the turning direction. Do not add. Of course, since a 3-axis acceleration sensor is used, the vector component that affects the X axis is calculated from the acceleration of the Y axis (vehicle turning direction) and the Z axis (vehicle gravity direction), and the X axis acceleration is calculated. It may be corrected.

  If the integrated value of the X-axis acceleration is equal to or less than a predetermined vehicle stop determination threshold value (S304-Yes), it is confirmed whether the output of all three axes of the acceleration sensor 3 is stable for a certain time or more (S305). . If it is stable (S305-Yes), it is determined that the vehicle speed is 0 km / h (S306). This is a determination factor of S102 in FIG. If the output of all three axes of the acceleration sensor 3 is not stable for a certain time or more, it is determined that the vehicle is not completely stopped (S305-No), and a series of loops are repeated.

  If the integrated value of the X-axis acceleration is equal to or greater than the vehicle stop determination threshold (S304-No) and exceeds a predetermined vehicle travel determination threshold for a certain time (S307-Yes), it is determined that the vehicle is traveling. (S308). This is a determination factor of S101 in FIG. If the X-axis integrated value is equal to or less than the vehicle travel determination threshold value (S307-No), a series of loops are repeated.

  The embodiment of the present invention has been described above, but the present invention is not limited to such an embodiment, and is merely an example, and various modifications can be made without departing from the scope of the present invention. Of course, the scope of the present invention is indicated by the description of the scope of claims, and further, the equivalent meanings described in the scope of claims and all modifications within the scope of the scope of the present invention are included. Including.

  In particular, the present invention is characterized by idling stop determination of a motorcycle not equipped with a vehicle speed sensor, and relates to an idling stop device for a motorcycle.

1 is a configuration diagram showing connection of an idling stop device for a motorcycle according to the present invention. FIG. It is a block diagram which shows the detailed structure of the idling stop apparatus for the same motorcycle. 3 is a flowchart showing a method of operating the idling stop device for a motorcycle according to the present invention. 1 is a configuration diagram showing a detailed configuration when an antitheft function is added to an idling stop device for a motorcycle according to the present invention. FIG. It is a flowchart which shows the operating method at the time of adding antitheft to the idling stop device for the same motorcycle. 1 is a detailed configuration diagram of an acceleration sensor input unit of an idle stop device for a motorcycle according to the present invention. FIG. It is a flowchart which shows the operating method of the speed judgment using the acceleration sensor of the idling stop apparatus for the same motorcycle.

Explanation of symbols

1, 31 ... Idling stop device 2 for motorcycles ··· Idling stop control circuit 3 ··· Acceleration sensor 4 · · · Relays 5 to 8 · · · Transistor 9 · ... Alarm 10 ... Ignition switch 11 ... Throttle position sensor 12 ... Crank angle sensor 13 ... Vehicle speed sensor 14 ... Brake switch 15 .... Winker switch 16 ... ECU
17... Starter motor 18... Indicator lamp 21... Detection unit 22... Arithmetic circuit 31. Filter 33 ... CPU

Claims (6)

In an idling stop device for a motorcycle for stopping idling of the motorcycle,
An acceleration sensor for measuring the acceleration of the motorcycle;
Acceleration detecting means for detecting a measurement value of the acceleration sensor;
Computing means for calculating the vehicle speed from the detected acceleration;
Comprising
An idling stop device for a motorcycle, wherein idling stop is determined from a result of the calculation.   The idling stop device for a motorcycle according to claim 1, wherein the calculation means determines that the motorcycle is stopped when the integrated values of acceleration and deceleration are the same.   The motorcycle according to claim 1 or 2, wherein it is detected from a measured value in a turning direction of the acceleration sensor that the motorcycle is turning and waiting for a right turn at an intersection, and the idling is not stopped. Idling stop device.   The idling stop for a motorcycle according to any one of claims 1 to 3, wherein the idling is not stopped by detecting that the motorcycle is stopped on an uphill from a measurement value in a gravitational direction of the acceleration sensor. apparatus.   The idling stop device for a motorcycle according to any one of claims 1 to 4, wherein the idling stop is determined in consideration of the state of various sensors and switches provided in the motorcycle.   The idling stop device for a motorcycle according to any one of claims 1 to 5, further comprising: an alarm device that emits an alarm sound when the vehicle is likely to be stolen; and a driving unit that drives the alarm device.

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