JP2009292412A - Side stand state detector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a side stand state detector which can not only detect a stand position and a storing position, but also detect an arbitrary position between both the positions or a switching direction. <P>SOLUTION: The side stand state detector (1) includes a side stand sensor (2) provided between the bracket (58) of a side stand (57) and the leg part (59) of the side stand (57) to detect a swing movement of the leg part (59) to the bracket (58) and output a detecting signal and a control part (3) for deciding the state of the side stand (57) in accordance with the detecting signal. The side stand sensor (2) outputs two pulse signals (S1, S2) one of which is delayed with a prescribed phase difference correspondingly to the swing direction of the leg part (59). <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a side stand state detection device, and more particularly, to a device that detects the state of a side stand for a motorcycle such as a motorcycle.

  Since motorcycles cannot stand independently except when traveling, a device for assisting independence, a so-called side stand, is indispensable when parking and stopping. This side stand can be switched from the self-supporting assist position (hereinafter referred to as the stand position) to the retracted position by the occupant's operation when moving from parking to stopping, but often forgets to switch (still in the stand position). In this case, since the side stand may come into contact with the road surface and the like, the posture of the two-wheeled vehicle may be greatly disturbed. Therefore, from the viewpoint of safety, a technology for prohibiting the start of traveling in the stand position is required. It was.

  As such a technique, for example, as shown in the following Patent Document 1, a magnet and a reed switch are combined to detect two positions of the side stand (stand position and storage position). It has been known. According to this, for example, when the vehicle is in the stand position, the start of the engine is not allowed to be avoided, thereby avoiding the inconvenience (starting running in the stand position) and ensuring safety. be able to.

JP 2004-355903 A

However, the above-described prior art merely detects two positions of the side stand (stand position and storage position), and has the following disadvantages.
(1) When the stand is in an imperfect position before the correct storage position, this cannot be detected at all. For this reason, for example, in the case of a system that allows the engine to be started by detecting the storage position, the engine cannot be started indefinitely, and it may be mistaken for a failure.
(2) The switching direction of the position of the side stand (stand position → storage position / storage position → stand position) cannot be detected. For this reason, for example, when it is determined to switch from the stand position to the storage position, preparation processing before starting the engine (eg, initialization processing of the engine start computer, etc.) is completed, and the occupant operation (starter switch operation) It is impossible to take measures to improve responsiveness such as starting the engine immediately in response to

  Accordingly, an object of the present invention is to provide a side stand state detection device that can detect not only the stand position and the storage position but also an arbitrary position between both positions and a switching direction.

According to a first aspect of the present invention, there is provided a side stand sensor unit that is provided between a bracket of a side stand and a leg portion of the side stand and detects a swing of the leg portion with respect to the bracket and outputs a detection signal thereof, and the detection signal. And a control unit for determining the state of the side stand based on the side stand sensor unit, the side stand sensor unit, according to the swinging direction of the leg portion, one of the two pulse signals delayed with a predetermined phase difference A side stand state detection device that outputs the detection signal.
According to a second aspect of the present invention, the side stand sensor unit includes a disc magnet in which N poles and S poles are arranged in a circle at equal intervals, and a first magnetic sensor and a second magnetic sensor disposed in proximity to the disc magnet. And outputting two pulse signals as the detection signal, one of which is delayed from the first magnetic sensor and the second magnetic sensor with a predetermined phase difference corresponding to the swinging direction of the leg. The side stand state detection device according to claim 1.
The invention according to claim 3 is the side stand state detection device according to claim 1, wherein the control unit determines the swinging direction of the leg portion depending on which of the two pulse signals is delayed. is there.
According to a fourth aspect of the present invention, the controller is configured so that the two positions (stand position and retracted position) of the leg and any position between the two positions are based on the pulse positions of the two pulse signals. The side stand state detection device according to claim 1, wherein:
According to a fifth aspect of the present invention, the control unit supplies a pulsed power supply voltage to the side stand sensor unit, and a signal output from the side stand sensor unit during the supply period shows a similar pulse change. 2. The side stand state detection device according to claim 1, wherein it is determined that an abnormality has occurred in the side stand sensor unit when there is not.

  According to the present invention, it is possible to provide a side stand state detection device that can detect not only the stand position and the storage position but also an arbitrary position between both positions and a switching direction.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a system configuration diagram of the embodiment. In this figure, the side stand state detection device 1 includes a side stand sensor unit 2 and a control unit 3.

  The side stand sensor unit 2 is rotated in accordance with the movement of the side stand (see the side stand 57 in FIG. 2), and has a disc magnet 4 in which N poles and S poles are circularly arranged at equal intervals, and is arranged close to the disc magnet 4. At least two magnetic sensors 5 and 6 (hereinafter referred to as a first magnetic sensor 5 and a second magnetic sensor 6).

  The detection signal of the first magnetic sensor 5 (hereinafter referred to as the first detection signal S1) is output to the control unit 3 via the first buffer circuit 11 including the resistors 7, 8, 9 and the transistor 10, and the same. In addition, a detection signal of the second magnetic sensor 6 (hereinafter referred to as a second detection signal S2) is also output to the control unit 3 via the second buffer circuit 16 formed of the resistors 12, 13, and 14 and the transistor 15. The

  The control unit 3 is a control unit composed of a program control type microcomputer, and includes a PROM 3a that stores a required control program, a CPU 3b that executes the control program, and a RAM 3c that operates as a work memory of the CPU 3b. . The control unit 3 includes peripheral circuit units such as an input / output unit for various signals and a clock unit in addition to the PROM 3a, the CPU 3b, and the RAM 3c, but is omitted in order to avoid congestion in the drawing.

  The control unit 3 executes at least the function of determining the state of the side stand by executing the control program, and a signal that allows the engine to start when the side stand is in the retracted position (hereinafter referred to as the engine). A function of outputting a start permission signal S3) to the engine starter 17 is realized.

  The engine starting unit 17 includes a driver unit 21 including resistors 18 and 19 and a transistor 20, a side stand relay 22 driven by the driver unit 21, an AC generator 23 for battery charging, and a starter motor 24 for engine starting. When the engine start permission signal S3 is input, the contact 22a of the side stand relay 22 is turned on, and the battery voltage (+ B) is supplied to the starter motor 24 through the contact 22a, thereby not shown. Allow the engine to start when the starter switch is operated.

  Here, the illustrated control unit 3 not only has a function of detecting the state of the side stand, but in addition, for example, signals from the clutch switch 25, the neutral switch 26, the flasher switch 27, the hazard switch 28, and the like (clutch / neutral) The signal S4, the flasher signal S5, the hazard signal S6) detection function, and the output function of various signals (the right flasher signal S7, the left flasher signal S8, and the warning signal S9) corresponding to the switch state are realized. The additional function is only an example.

  Incidentally, the right flasher signal S7 is output to the right flasher section 35 including resistors 29 and 30, a transistor 31, a flasher relay 32, and lamps 33 and 34, and the left flasher signal S8 is a resistor 36 and 37, a transistor 38, and a flasher relay. 39 and the left flasher section 42 including the lamps 40 and 41, and the warning signal S9 is output to the warning section 47 including the resistors 43 and 44, the transistor 45, and the light emitting diode 46. The resistors 48 and 49 are voltage dividing resistors for the clutch / neutral signal S4, the resistors 50 and 51 are voltage dividing resistors for the flasher signal S5, and the resistors 52 and 53 are voltage dividing resistors for the hazard signal S6.

  FIG. 2 is an external view of the side stand. In this figure, a side stand 57 includes a bracket 58 that is integrally attached to the lower part of a motorcycle body, a leg portion 59 that is pivotally supported at a lower end portion of the bracket 58 within a predetermined angle range, A side stand sensor that is provided between the bracket 58 and the leg 59 and includes a rod-like operation part 60 that is fixedly projected in the middle of the part 59 and a plate-like pedestal 61 that is fixed to the tip of the leg 59. It comprises the part 2 (refer FIG. 1).

  The side stand 57 having such a configuration can take one of two positions (stand position and storage position) by swinging the leg portion 59. Incidentally, the state shown in the figure is the “stand position”. The leg portion 59 can swing at an angle of about 90 degrees from the stand position with the attachment portion with the bracket 58 as a fulcrum, and at either the stand position or the storage position, It keeps its position. Further, although not shown, a spring for energizing switching from the stand position to the storage position or from the storage position to the stand position is spanned between the bracket 58 and the leg portion 59 of the side stand 57. When switching from one position to the other, the swing of the leg 59 is not stopped halfway by the force of the spring.

  In such a configuration, when the two-wheeled vehicle is parked or stopped, the leg 59 is switched from the retracted position to the stand position by a footrest operation on the rod-shaped operation unit 60 by the occupant, and is fixed to the tip of the leg 59. The pedestal 61 is abutted against the road surface to assist the vehicle body independence. On the other hand, when starting to travel, the leg 59 is flipped up by a foot kicking operation to the rod-like operation unit 60 by the occupant, and then a spring (not shown) spanned between the bracket 58 and the leg 59 is used. The leg 59 is oscillated and displaced to the retracted position (the illustrated position) by the urging force.

  As described above, the side stand sensor part 2 mounted between the bracket 58 and the leg part 59 outputs two signals of the first detection signal S1 and the second detection signal S2. These two signals are transmitted from the control unit 3 to two positions of the side stand 57 (stand position and storage position), an arbitrary position between the two positions, and a change direction of the position (ie, stand position → storage position). / Storage position → stand position).

  FIG. 3 is a structural diagram (first example) of the side stand sensor unit 2. In this figure, the side stand sensor unit 2 is a circle that is mounted inside a case 62 attached to the bracket 58 of the side stand 57 and is rotated in accordance with the movement of the leg portion 59 of the side stand 57 via the shaft 63. A plate magnet 4 (see FIG. 1), a first magnetic sensor 5 and a second magnetic sensor 6 (see FIG. 1) mounted on the back side of a substrate 64 attached to the case 62, and a lid 65 for closing the case 62. I have. The first detection signal S1 is extracted from the first magnetic sensor 5, and the second detection signal S2 is extracted from the second magnetic sensor 6.

  FIG. 4 is a diagram showing the relationship between the disc magnet 4, the first magnetic sensor 5, and the second magnetic sensor 6. In this figure, a disc magnet 4 has a shape in which N poles and S poles are arranged in a circle at equal intervals, and two magnetic sensors (first magnetic sensor 5 and A second magnetic sensor 6) is arranged. Here, D is an arrangement interval between the two magnetic sensors (the first magnetic sensor 5 and the second magnetic sensor 6), and this D corresponds to the arrangement interval between the N pole and the S pole of the disc magnet 4.

  These magnetic sensors may be any one that can output an electrical signal corresponding to a change in magnetism, and may be, for example, a one-side magnetic field operation type sensor or an alternating magnetic field operation type sensor.

  The number of poles of the disc magnet 4 is an even number. This is to make the different poles adjacent to each other. The number of poles in the illustrated example is “12”, but is not limited thereto. Increasing the number of poles is preferable because accuracy (resolution) of side stand state detection is improved. For example, if the number is 12 as shown, a resolution of 30 degrees per pole can be obtained. This resolution (30 degrees) needs to be sufficiently smaller than at least the swing angle of the leg 59 between the two positions of the side stand 57 (stand position and retracted position). Now, assuming that the swing angle of the leg 59 is 90 degrees, the resolution (30 degrees) is 1/3 of the swing angle. This means that an arbitrary position between the two positions is set every 30 degrees. This means that it can be detected in three stages. Therefore, if further fine resolution is required, the number of poles of the disk magnet 4 may be increased to 12 or more (however, even number).

  In addition, in the example of FIG. 4, although the 1st magnetic sensor 5 and the 2nd magnetic sensor 6 are arrange | positioned on the plate | board surface of the disc magnet 4, it is not limited to this. It may be arranged anywhere as long as the magnetism of the disc magnet 4 reaches.

  FIG. 5 is another relationship diagram between the disc magnet 4, the first magnetic sensor 5, and the second magnetic sensor 6. In this figure, the first magnetic sensor 5 and the second magnetic sensor 6 are arranged on the outer circumferential side of the disc magnet 4 while maintaining a slight distance (however, the distance covered by the magnet of the disc magnet 4). You may arrange in this way.

  FIG. 6 is an enlarged view of a main part of the side stand 57 when in the stand position. In this figure, the disc magnet 4 is attached to a leg portion 59 via a shaft 63 and rotates following the swinging of the leg portion 59. The asterisk in the figure is a mark for convenience described on the side surface of the disc magnet 4.

  FIG. 7 is an enlarged view of a main part of the side stand 57 when in the storage position. In this figure, the star mark marked on the side surface of the disc magnet 4 has moved approximately 90 degrees upward from the position of FIG. 6 as the leg 59 swings.

  The first detection signal S1 and the second detection signal S2 output from the two magnetic sensors (the first magnetic sensor 5 and the second magnetic sensor 6) of the side stand sensor unit 2 are the movement of the star mark (that is, the circular plate). According to the rotation of the magnet 4, the required changes described below are shown.

  FIG. 8 is a waveform diagram of one of the first detection signal S1 and the second detection signal S2. In this figure, the upper waveform shows the magnetic change accompanying the rotation of the disc magnet 4. The half cycle length of the waveform corresponds to the resolution (30 degrees in the above example), and the detection signal (one of the first detection signal S1 and the second detection signal S2) is logic low at a period corresponding to this resolution. It exhibits changes that repeat levels and high logic levels.

  Not only the two positions of the side stand 57 (stand position and storage position), but any position between them (however, a stepped position determined by the resolution) and the direction of change in position (stand position → storage position / storage position → stand In order to detect (position), at least two detection signals (first detection signal S1 and second detection signal S2) are required. The reason will be described below.

  FIG. 9 is a waveform diagram of both the first detection signal S1 and the second detection signal S2. In this figure, the change of each signal waveform is the same as in the above description (FIG. 8). However, when these two detection signals (S1, S2) are arranged on the same time axis, both detection signals ( A predetermined phase difference T occurs between S1, S2). This phase difference T is determined by the arrangement interval D (see FIG. 4) between the two magnetic sensors (the first magnetic sensor 5 and the second magnetic sensor 6).

  In the illustrated example, the second detection signal S2 is delayed by the phase difference T with respect to the first detection signal S1, but this may be reversed. That is, the first detection signal S1 may be delayed by the phase difference T with respect to the second detection signal S2. Which detection signal is delayed is determined solely by the change direction of the position of the side stand 57. Hereinafter, for convenience of explanation, when the position of the side stand 57 changes from the storage position to the stand position (stand-down operation), the second detection signal S2 is only the phase difference T with respect to the first detection signal S1, as shown in the figure. Conversely, when the position of the side stand 57 changes from the stand position to the storage position (stand-up operation), the first detection signal S1 is delayed by the phase difference T with respect to the second detection signal S2. To do.

  From such a principle, the control unit 3 determines which direction of the position of the side stand 57 (stand-up or stand-down) is determined by determining which of the first detection signal S1 and the second detection signal S2 is delayed. can do.

  FIG. 10 is a diagram illustrating an actual direction determination operation in the control unit 3. As shown in this figure, the pulses of the first detection signal S1 and the second detection signal S2 are monitored using the quadruple processing operation of the microcomputer of the control unit 3. When the first detection signal S1 is delayed with respect to the second detection signal S2, the monitoring result is counted up (1, 2, 3, 4, 5,...). In this case, the stand-up operation is determined. On the other hand, when the second detection signal S2 is delayed with respect to the first detection signal S1, the monitoring result is counted down (−1, −2, −3, −4, −5,...). In this case, the stand-down operation is determined.

  As described above, according to the present embodiment, the following effects can be obtained.

(1) Determination of two positions (stand position and storage position) of the side stand 57:
The side stand sensor unit 2 outputs detection signals (first detection signal S1 and second detection signal S2) that change for each predetermined resolution within the range of the swing angle of the leg portion 59 of the side stand 57. Here, as shown in the above example, if the swing angle is 90 degrees and the resolution is 30 degrees, the detection signal (the first detection signal S1 and the first detection signal between the two positions (stand position and storage position) of the side stand 57 is detected. The two detection signals S2) indicate 90 degrees ÷ 30 degrees = 3, that is, three changes. Therefore, when the change in the number of times is detected, it can be determined that the side stand 57 is in one of two positions (stand position and storage position). Note that the final determination as to which of the two positions (the stand position and the storage position) is made with reference to the determination result of the next position direction. In other words, in the case of the stand-up operation, the final determination of arrival at the storage position is made.

(2) Determination of the position change direction (stand-up / down operation) of the side stand 57:
As shown in FIG. 10, when the first detection signal S1 is delayed with respect to the second detection signal S2, the stand-up operation (change from the stand position to the storage position) is determined, and the first detection signal When the second detection signal S2 is delayed with respect to S1, the stand-down operation (change from the storage position to the stand position) is determined.

(3) Determination of an arbitrary position between two positions (stand position and storage position) of the side stand 57:
As described above, the first detection signal S1 and the second detection signal S2 change for each predetermined resolution. If the resolution is 30 degrees as illustrated above and the swing angle of the leg portion 59 of the side stand 57 is 90 degrees, in this case, the swing range of the leg portion 59 is divided into steps of 30 degrees. An arbitrary position can be determined. Of course, if the arbitrary position is determined at each finer stage, the resolution may be made finer, and the number of poles of the disk magnet 4 may be increased.

  Thus, according to the present embodiment, two positions of the side stand 57 (stand position and storage position) can be determined, and the position change direction (stand up / down operation) of the side stand 57 can be determined. Although an arbitrary position between the positions (stand position and storage position) can be determined, the following specific action can be obtained by using each determination result.

  First, regarding the point at which two positions (stand position and storage position) of the side stand 57 can be determined, the engine start is prohibited until the side stand 57 reaches the storage position by using the determination result, and the side stand 57 is It is possible to ensure safety by preventing the vehicle from running with the vehicle upright.

  Next, regarding the point at which the position change direction (stand-up / down operation) of the side stand 57 can be determined, for example, when the stand-up operation is determined, preparation processing (for example, the initial stage of the control unit 3 etc. , Etc.) can be completed in advance. Thus, the engine can be started immediately in response to the starter switch operation by the occupant after the completion of the stand-up operation, and the occupant can be prevented from feeling a time lag.

  Finally, with respect to the point where an arbitrary position between the two positions of the side stand 57 (stand position and storage position) can be determined, the following usage styles can be considered. For example, when the stand-up operation is performed, the side stand 57 may stop on the way to the storage position, although it is rare. In such a case, since it is generally impossible to start the engine unless the side stand 57 is properly placed in the retracted position, the engine cannot be started indefinitely, and it is mistaken that a failure has occurred. There is a risk. In this embodiment, in such a case, when it is determined that the vehicle is at an arbitrary position that reaches the storage position, the side stand 57 stops halfway by issuing a warning to the occupant using the light emitting diode 46 of the warning unit 47 or the like. Can be notified, and the above-mentioned misidentification can be avoided.

  The technical idea of the present embodiment is not limited to the above disclosed contents, and other modifications and developments are naturally included. For example, the following may be adopted.

  FIG. 11 is a structural diagram (second example) of the side stand sensor unit 2. In this figure, the side stand sensor unit 2 includes a shaft 66 that rotates integrally with the leg portion 59 of the side stand 57, and a circle that is integrally attached to the shaft 66 via a ring 67, a spacer 68, washers 69, 70, and the like. The plate magnet 4 includes a first magnetic sensor 5 and a second magnetic sensor 6 which are attached to a substrate (not shown), which is attached to a case (not shown), and a washer 71 which is abutted against the tip of the shaft 66. Even in such a configuration, the disc magnet 4 rotates following the swing of the leg portion 59 of the side stand 57. Therefore, the change in magnetism accompanying this rotation is defined as the first detection signal S1 and the second detection signal S2. It can be output to the control unit 3.

  Further, the following is preferable because the failure of the first magnetic sensor 5 and the second magnetic sensor 6 and the harness disconnection between the first magnetic sensor 5 and the second magnetic sensor 6 can be detected from the control unit 3.

  FIG. 12 is a configuration diagram in which countermeasures against failure are taken, and FIG. 13 is a waveform diagram thereof. In these drawings, a harness 72 between the control unit 3 and the first magnetic sensor 5 and the second magnetic sensor 6 includes a power line 73, a signal output line 74 for the first detection signal S1 and the second detection signal S2, and And a ground line 75. Consider a case where the power supply voltage supplied from the control unit 3 to the first magnetic sensor 5 and the second magnetic sensor 6 via the power supply line 73 is pulsed as shown in the figure. In such a case, if there is no failure of the first magnetic sensor 5 and the second magnetic sensor 6 or the disconnection of the harness 72, the signal waveform transmitted to the control unit 3 via the signal output line 74 also shows a similar pulse change. It should be. However, when a failure occurs in the first magnetic sensor 5 or the second magnetic sensor 6 or a disconnection occurs in the harness 72, the signal waveform transmitted to the control unit 3 via the signal output line 74 is Such a pulse change is not shown, and for example, the ground potential remains.

  Therefore, when the “signal waveform transmitted to the control unit 3 via the signal output line 74” does not show the same pulse change despite the “power supply voltage pulse operation”, the first magnetic sensor 5 The failure of the second magnetic sensor 6 or the disconnection of the harness 72 can be determined, and necessary measures such as issuing a warning to the occupant can be taken.

  In addition, even in the following manner, a failure of the first magnetic sensor 5 and the second magnetic sensor 6 and a disconnection of the harness between the first magnetic sensor 5 and the second magnetic sensor 6 from the control unit 3 can be detected.

  FIG. 14 is a configuration diagram in which countermeasures against failure are taken, and FIG. 15 is a waveform diagram thereof. In these figures, the major difference in configuration from the above embodiment is that the vehicle speed signal Vsp is first input to the control unit 3, and secondly, the first detection signal S1 and the second detection signal S2. The phase relationship is set to a predetermined relationship. As shown in FIG. 15, when the side stand 57 is in the stand position and the storage position, one of the first detection signal S1 and the second detection signal S2 is at a high logic level and the other is at a low logic level, as shown in FIG. This means a certain relationship and is indicated by region B in the figure. Regions A and C on both sides of region B show a case where they are not in a predetermined phase relationship. Specifically, in the region A, both the first detection signal S1 and the second detection signal S2 are at a high logic level, and in the region C, both the first detection signal S1 and the second detection signal S2 are at a low logic level.

  The predetermined phase relationship described above is such that the magnetic sensor outputs (first detection signal S1 and second detection signal S2) are in the region B in the state where the side stand 57 is fully standing and in the state where it is completely stored. It is obtained by appropriately setting the positional relationship between the magnetic poles of the disc magnet 4 and the first magnetic sensor 5 and the second magnetic sensor 6.

  With this setting, the power of the control unit 3 and the like is turned on, and the output of the magnetic sensor (the waveforms of the first detection signal S1 and the second detection signal S2 received by the control unit 3) is as in the region B. If so, it can be determined that there is no abnormality in the control unit 3, the first magnetic sensor 5, the second magnetic sensor 6, and the harness 72.

  FIG. 16 is an operation flowchart of the abnormality determination process. In this flow, when the engine is started, as shown in (a), power is supplied to the first magnetic sensor 5 and the second magnetic sensor 6 in response to the main switch being turned on (step 100) (step 101). Then, it is determined whether or not the first detection signal S1 and the second detection signal S2 output from these sensors are in the region B of FIG. 15 (step 102). If it is in the B region, it is determined that there is no abnormality in the first magnetic sensor 5 or the second magnetic sensor 6 and the like, and the engine is allowed to start (step 103). Then, it is determined that there is an abnormality in the second magnetic sensor 6 or the like, and the engine start is prohibited (step 104).

  As described above, when the engine is started, it is possible to reliably determine whether there is an abnormality by determining whether the first detection signal S1 and the second detection signal S2 are in the region B of FIG. Therefore, the engine start prohibition process when an abnormality occurs can be performed without delay.

  On the other hand, during traveling, as shown in (b), the vehicle speed signal Vsp is compared with a predetermined value (for example, a value corresponding to vehicle speed 0) to determine whether the vehicle is traveling (step 105). For example, it is determined whether or not the first detection signal S1 and the second detection signal S2 output from the first magnetic sensor 5 and the second magnetic sensor 6 are in the region B of FIG. 15 (step 106). And if it exists in B area, it will judge that there is no abnormality in the 1st magnetic sensor 5 or the 2nd magnetic sensor 6, etc., will continue driving | running | working (step 107), and if it is not in B area, it will warn the driver. (Warning) is issued and the running is continued (step 108).

  Thus, during traveling, it is possible to reliably determine whether there is an abnormality by determining whether the first detection signal S1 and the second detection signal S2 are in the region B of FIG. When an abnormality occurs, the driver can be warned to take necessary measures such as carrying in the factory, and when the abnormality occurs during traveling, the traveling can be continued as it is.

It is a system configuration figure of an embodiment. It is an external view of a side stand. FIG. 4 is a structural diagram (first example) of the side stand sensor unit 2. FIG. 4 is a relationship diagram of a disc magnet 4, a first magnetic sensor 5, and a second magnetic sensor 6. FIG. 6 is another relationship diagram of the disc magnet 4, the first magnetic sensor 5, and the second magnetic sensor 6. It is a principal part enlarged view of the side stand 57 when it exists in a stand position. It is a principal part enlarged view of the side stand 57 when it exists in a storing position. It is a waveform diagram of either one of the first detection signal S1 and the second detection signal S2. It is a waveform diagram of both the first detection signal S1 and the second detection signal S2. It is a figure which shows the actual direction determination operation | movement in the control part. FIG. 6 is a structural diagram (second example) of the side stand sensor unit 2. It is the block diagram which took the countermeasure against failure. It is a wave form diagram which took the countermeasure against failure. It is the block diagram which took the countermeasure against failure. It is a wave form diagram which took the countermeasure against failure. It is an operation | movement flowchart of an abnormality determination process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Side stand state detection apparatus 2 Side stand sensor part 3 Control part 4 Disc magnet 5 1st magnetic sensor 6 2nd magnetic sensor 57 Side stand 58 Bracket 59 Leg part

Claims (5)

A side stand sensor unit that is provided between a bracket of the side stand and a leg portion of the side stand and detects a swing of the leg portion with respect to the bracket and outputs a detection signal;
A control unit for determining the state of the side stand based on the detection signal,
The side stand sensor section outputs two pulse signals, one of which is delayed with a predetermined phase difference corresponding to the swing direction of the leg section, as the detection signal. Detection device.   The side stand sensor unit includes a disk magnet in which N poles and S poles are circularly arranged at equal intervals, and a first magnetic sensor and a second magnetic sensor disposed in proximity to the disk magnet, and the first magnetic sensor 2. The sensor and the second magnetic sensor, wherein two pulse signals, one of which is delayed by a predetermined phase difference corresponding to the swing direction of the leg, are output as the detection signal. Side stand status detection device.   2. The side stand state detection device according to claim 1, wherein the control unit determines a swinging direction of the leg portion depending on which of the two pulse signals is delayed.   The controller determines two positions (stand position and retracted position) of the leg and an arbitrary position between the two positions based on the pulse positions of the two pulse signals. The side stand state detection device according to claim 1.   The control unit supplies a pulsed power supply voltage to the side stand sensor unit, and the signal output from the side stand sensor unit during the supply period does not show a similar pulse change to the side stand sensor unit. The side stand state detection device according to claim 1, wherein it is determined that an abnormality has occurred.

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