Angle detection device for two-wheeled vehicle

Abstract

The utility model relates to an angle detection device for a two-wheeled vehicle, which is mounted between a connecting pipe and a main pipe of the vehicle and used for detecting a relative rotation angle between the connecting pipe and the main pipe, the detection device comprises an induction ring fixedly sleeved on the main pipe and a cover body coated outside the induction ring, and a sensor device is arranged on the inner wall of the cover body; the induction ring is provided with an induction face perpendicular to the end face of the main pipe and forming an included angle with the axis of the main pipe, induction lines are arranged on the induction face at equal intervals, and the sensor device receives signals reflected by the induction face. According to the utility model, the problem of drifting of the value of a conventional sensor can be corrected, and a relatively accurate angle value can be output after the mechanism rotates to a specific angle.

Description

Technical Field

[0001] The utility model relates to the technical field of two-wheeled vehicle running angle adjustment, in particular to an angle detection device for two-wheeled vehicles. Background Art

[0002] With the rapid development of two-wheeled vehicles in the past two decades, more and more sensors are being applied to vehicles, such as gyroscope sensors and nine-axis acceleration sensors.

[0003] With the help of this type of sensor, the tilt angle of the entire vehicle and the ups and downs of the slope can be calculated. However, this type of sensor often has an integral drift problem, that is, the data will be inaccurate after long-term use. There are many ways to detect data on the market, but there is a lack of a reliable physical detection method for simple and fast detection. Utility Model Content

[0004] In view of the shortcomings in the above-mentioned existing production technology, the applicant provides a rationally structured angle detection device for two-wheeled vehicles, which can provide an absolute angle for detecting angle data when used, and use this as a benchmark to detect a wider range of data, effectively solving the problem of sensor data integral drift.

[0005] The technical solution adopted by the utility model is as follows:

[0006] An angle detection device for a two-wheeled vehicle is installed between a connecting pipe and a main pipe of the vehicle to detect the relative rotation angle between the connecting pipe and the main pipe.

[0007] The detection device includes an induction ring and a sensor device opposite to the induction ring; one end of the induction ring facing the sensor device is a sensing surface, and the sensing surface includes an invalid sensing surface that is not perpendicular to the sensor device and an effective sensing surface that is perpendicular to the sensor device, and the sensor device only receives signals reflected by the effective sensing surface.

[0008] As a further improvement of the above technical solution:

[0009] The effective sensing surface evenly divides the rotation angle range of the external vehicle steering wheel; the angle between adjacent effective sensing surfaces ranges from 1° to 15°.

[0010] There is a difference in the transmission distance between the active sensing surface and the sensor.

[0011] An induction line is arranged on the induction ring, and a groove is formed along the induction line to obtain an effective induction surface;

[0012] The sensing lines include a positive direction sensing line for correction.

[0013] The invalid sensing surface is an inclined surface that forms an angle with the horizontal plane; in the initial state, the line connecting the highest point and the lowest point of the invalid sensing surface is collinear with the longitudinal axis of the vehicle, and the positive direction sensing line falls on this collinear position.

[0014] The sensor device adopts an optical sensor; the sensor device and the effective sensing surface move relative to each other, and the relative position relationship between the sensor device and the effective sensing surface is:

[0015] The sensor device rotates with the faucet swing, and the effective sensing surface is connected to the main pipe and the position is constant.

[0016] Or: the sensor device is connected to the main pipe and has a constant position, and the effective sensing surface is arranged on the connecting pipe and rotates with the connecting pipe.

[0017] On the premise that the sensor device is a moving part, the sensor device and the effective sensing surface are arranged along the axial direction of the main pipe.

[0018] On the premise that the effective sensing surface is a moving part, the sensor device and the effective sensing surface are arranged radially.

[0019] When the sensor device and the effective sensing surface are arranged along the radial direction, the effective sensing surface is located at the bottom of the groove where it is located, and the groove wall is a non-reflective surface.

[0020] The light signal reflected by each effective sensing surface is sensed by the sensor and outputs a single corresponding voltage.

[0021] The beneficial effects of the utility model are as follows:

[0022] The utility model has a compact and reasonable structure and is easy to operate. By adding an angle detection device between the connecting pipe and the main pipe, the change of the rotation angle is converted into a change of the distance in the vertical direction, which is finally reflected as the value of the output voltage. After the mechanism rotates to a specific angle, an accurate angle value can be output as a reference. It can effectively correct the problem of integral drift in the measurement process of conventional sensors and solve the problem of inaccurate data after long-term use.

[0023] The physical correction structure in this scheme is equivalent to a standard weight for angle measurement. Since it adopts a fixed mechanical structure, it is not easy to be damaged and is a reliable physical detection method.

[0024] This solution solves the problem of faucet angle sensing of electric two-wheeled vehicles, three-wheeled vehicles, etc. Through this device, the rotation angle of the faucet can be determined, and the faucet can be used as an event trigger medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The figure is a schematic diagram of the vehicle position for installing the detection device of the utility model.

[0026] Figure 2This is a schematic diagram of the induction ring structure of the utility model.

[0027] Figure 3 This is a schematic diagram of the cooperation between the induction ring and the cover body of the utility model.

[0028] Figure 4 This is a top view of the inclined reflection of the utility model.

[0029] Figure 5 This is the main view of the inclined reflection of the utility model, which shows three groups of reflection paths, and the reflection distance and receiving distance of each group of paths are different.

[0030] Figure 6 This is a schematic diagram of the sensor device circuit of the utility model.

[0031] Figure 7 Schematic diagram of light reflected by the effective sensing surface in an axially arranged sensor device and sensing ring structure.

[0032] Figure 8 Schematic diagram of light reflected by the effective sensing surface in a radially arranged sensor device and sensing ring structure.

[0033] Among them: 1. connecting pipe; 2. main pipe; 3. induction ring; 4. cover; 5. sensor device;

[0034] 301. effective sensing surface; 302. sensing line. DETAILED DESCRIPTION

[0035] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0036] like Figure 1-Figure 8 As shown, the angle detection device for a two-wheeled vehicle of this embodiment is installed between the connecting pipe 1 and the main pipe 2 of the vehicle, and is used to detect the relative rotation angle between the connecting pipe 1 and the main pipe 2.

[0037] The detection device includes an induction ring 3 and a sensor device 5 opposite to the induction ring 3; one end of the induction ring 3 facing the sensor device 5 is a sensing surface, and the sensing surface includes an invalid sensing surface that is not perpendicular to the sensor device 5 and an effective sensing surface 301 that is perpendicular to the sensor device 5. The sensor device 5 only receives the signal reflected by the effective sensing surface 301.

[0038] The effective sensing surface 301 divides the rotation angle range of the external vehicle faucet equally; the angle between adjacent effective sensing surfaces 301 ranges from 1° to 15°.

[0039] There is a difference in the transmission distance between the effective sensing surface 301 and the sensor 5 .

[0040] An induction line 302 is provided on the induction ring 3, and a groove is formed along the induction line 302 to obtain an effective induction surface 301;

[0041] The sensing lines 302 include a positive direction sensing line for calibration.

[0042] The invalid sensing surface is an inclined surface that forms an angle with the horizontal plane; in the initial state, the line connecting the highest point and the lowest point of the invalid sensing surface is collinear with the longitudinal axis of the vehicle, and the positive direction sensing line falls on this collinear position.

[0043] The sensor device 5 adopts an optical sensor; the sensor device 5 and the effective sensing surface 301 move relative to each other, and the relative position relationship between the sensor device 5 and the effective sensing surface 301 is:

[0044] The sensor device 5 rotates with the faucet swing, and the effective sensing surface 301 is connected to the main pipe and the position is constant.

[0045] Or: the sensor device 5 is connected to the main pipe 2 and has a constant position, and the effective sensing surface 301 is arranged on the connecting pipe 1 and rotates with the connecting pipe 1 .

[0046] On the premise that the sensor device 5 is a moving part, the sensor device 5 and the effective sensing surface 301 are arranged along the axial direction of the main pipe 2 .

[0047] On the premise that the effective sensing surface 301 is a moving part, the sensor device 5 and the effective sensing surface 301 are arranged radially.

[0048] When the sensor device 5 and the effective sensing surface 301 are arranged along the radial direction, the effective sensing surface 301 is located at the bottom of the groove where it is located, and the groove wall is a non-reflective surface.

[0049] The optical signal reflected by each effective sensing surface 301 is sensed by the sensor and outputs a single corresponding voltage.

[0050] The specific structure and working principle of the utility model are as follows:

[0051] like Figure 1 As shown, it is a common electric two-wheeled vehicle handlebar, including a rotatable connecting pipe 1 and a main pipe 2 fixed to the frame. The main pipe 2 is sleeved on the outside of the connecting pipe 1. When the handlebar rotates, the connecting pipe 11 will be driven to rotate, and the main pipe 22 will not move. Therefore, the rotation angle of the electric vehicle handlebar can be obtained by measuring the relative rotation angle between the connecting pipe 11 and the main pipe 22.

[0052] This solution provides an angle measurement device based on the infrared or ultrasonic ranging principle, which uses the reflection principle of light or waves on an inclined plane. When the light is perpendicular to the inclined plane, the incident light and the reflected light will be on the same line, but when the light is directed obliquely to the reflecting surface at a certain incident angle, the reflected light will deviate from the incident line at a certain angle.

[0053] like Figure 2 and Figure 3 As shown, the device is divided into an induction ring 3 and a cover body 4. The induction ring 3 is an oblique ring, and the induction ring 3 can be made of metal or other materials with a certain reflectivity. Its overall structure is formed by cutting an annular cylinder into two halves from the side. Due to the non-horizontal cutting, the two end faces of the induction ring 3 are one oblique surface and the other flat surface.

[0054] like Figure 2 In the structure of the induction ring 3 shown, the induction lines 302 are marked on the induction ring 3, and the intervals of the induction lines 302 are designed to be fixed angles, and the optional endpoint values ​​are such as 1° interval, 5° interval, and 15° interval.

[0055] The rotatable angles of the electric vehicle's steering wheel are generally 45 degrees to the left and 45 degrees to the right. If a 15° interval is used, there are a total of 7 sensing lines 302, which can divide a 90-degree arc into two sections. The middle sensing line 302 is called the positive direction sensing line 302. The positive direction sensing line 302 is aligned with the center line of the vehicle body, and its direction points to the driving direction of the two wheels directly in front. At this time, the steering wheel's rotation angle is 0.

[0056] The induction ring 3 is covered with a cover 4, such as Figure 3 As shown, it is an optional structure, the inclined sensing surface 301 faces upward, and the sensor device 5 is set on the top of the cover body 4; the side of the cover body 4 plays a role in dust prevention, and the top of the cover body 4 is opened for wire outlet, so that the sensor can communicate with the outside. Figure 7 As shown, a vertical groove is opened on the sensing surface, and the bottom of the groove is the effective sensing surface 301. The light emitted by the sensor device 5 and the light received are vertical, and during the rotation process, the reflected light can maintain a vertical reflection path, and it is not easy to generate interference light in other directions.

[0057] As an alternative embodiment, the sensor device 5 can also be installed on the side of the cover body 4, as long as the sensor device 5 can receive the signal sent by the sensing surface 301. This radial structure may cause the light to be reflected on the groove wall to form interference light during the rotation process, so a non-reflective coating is provided on the surface except the groove bottom, and it is changed to a matte surface to prevent the generation of interference light.

[0058] Since the axially arranged sensor device 5 and induction ring 3 are the preferred solutions that are not easy to generate interfering reflected light, the axially arranged structure is used as an example for explanation below. The induction ring 3 is fixedly connected to the main pipe 2, and the sensor device 5 cover body 4 structure and the connecting pipe 1 are fixedly connected. When the faucet rotates, it will drive the connecting pipe 1 and the cover body 4 fixed thereto to rotate, and the sensor device 5 on the top of the cover body 4 will also rotate synchronously. The sensor device 5 can use a reflective infrared sensor or an ultrasonic sensor; the sensor light source can use infrared light or laser, etc., and various light sources can measure distance. Its advantage is that it only needs to be installed on one side, without installing a receiving device on the opposite side, and the structure is simple and stable.

[0059] like Figure 5 The figure shows the schematic diagram of the inclined plane reflection of the induction ring 3. Taking the infrared sensor as an example, when the sensor emits infrared light, it encounters an inclined plane and its light is reflected to another point. As the connecting tube 1 rotates, the position of this reflection point also changes, which makes it impossible to fix the distance between the receiving end and the transmitting end of the sensor; in other words, once the receiving end and the transmitting end of the sensor are fixed, the sensor signal will be lost when the faucet rotates. Only when the inclined plane becomes a horizontal plane will the sensor continue to receive the reflected signal during rotation. At this time, the purpose of sensing at a specific position can be achieved by designing a plane on the inclined plane. Because the reflected signal will only be received when the plane is illuminated.

[0060] The plane set on the inclined surface is the effective sensing surface 301, and the effective sensing surface 301 is perpendicular to the sensor device 5. In order to make a reflective surface on the sensing ring 3, a cutting process can be used. The cutting method can be vertical cutting or horizontal cutting. Taking horizontal cutting as an example, a cutting tool is used to cut the inclined surface of the sensing ring 3 at a horizontal angle, so that a horizontal surface appears at every 15 degrees. The horizontal surface can reflect the incident light of the sensor back to the sensor, thereby realizing equal-interval sensing. As the sensing lines 302 become denser, the identifiable angles will also be more refined. However, for the two-wheeled electric vehicle data detection scenario, 7 identification angles have met the requirements.

[0061] Figure 6 This is the application circuit diagram of the sensor device 5. The specific design method is explained below.

[0062] The sensor device 5 may be a reflective infrared sensor, which has three standard interfaces, namely power supply, ground, and analog signal output.

[0063] Assume that the reference voltage is equal to the power supply voltage, and the analog signal output port outputs a voltage of 0-5V. The higher the voltage, the stronger the light reflected by the object being measured. There are two possibilities at this time. One is that the distance is closer, and the other is that the material emissivity is higher. Once the material of the induction loop 3 is fixed, the output voltage of the emission-type infrared sensor is inversely proportional to the reflection distance.

[0064] The farther the sensor is from the reflective surface of the induction ring 3, the lower the output voltage is, and the closer the sensor is to the reflective surface of the induction ring 3, the higher the output voltage is. By reading the output voltage of the sensor, the distance between the sensor and the reflective surface can be determined; only part of the area of ​​the induction ring 3 can achieve front reflection. If the inclination angle of the slope is 45 degrees, except for the reflective surface overlapping with the sensing line 302, the light in other areas will be emitted and will not be received by the sensor, which enables the sensor to accurately identify a specific area; if these reflective surfaces are set at different heights, that is, a slender sensing surface 301 is set on the slope of the induction ring 3, the reflection signal strength of different sensing surfaces 301 will be different due to different reflection distances.

[0065] like Figure 7 As shown in the figure, it is a reflection effect diagram of reflective surfaces of different heights. When the faucet is in the positive direction, the sensor output voltage is V4. When the faucet turns left, the sensor output voltage is 0, and the reflective surface is an inclined surface. When the faucet turns left 15 degrees, the sensor output voltage is about V3. When the faucet turns left 45 degrees, the sensor output voltage is V1.

[0066] Similarly, when the sensor turns right, the output voltage of the sensor is still V5, V6, and V7, and the 7 reflective surfaces will have 7 output voltages. This voltage difference can be achieved by changing the height or by using different reflective materials. It is relatively easier to achieve by changing the height.

[0067] As an alternative implementation, a horizontal reflection surface can be provided on the special sensing line 302. The horizontal reflection surface can be made of the same material as the sensing ring 3 or a different material, and can be distinguished by the tilt angle. The horizontal reflection surface can be recessed into the sensing ring 3, or can penetrate the sensing ring 3 and be attached to the bottom surface, or can be formed by cutting a horizontal surface on the inclined surface of the sensing ring 3, so that the signal can be reflected back nearly vertically.

[0068] In the above structure, the inclination angle of the sensing surface 301 is not limited and can be set to 45 degrees or other angles. The number of special sensing lines 302 is not limited and can be a sensing line 302 every 1 degree or a sensing line 302 every 15 degrees.

[0069] The above structure can not only accurately detect the drift deviation of the nine-axis acceleration sensor or gyroscope device, but also roughly determine the steering angle of the electric vehicle's faucet. The judgment accuracy depends on the density of the reflective surface. The determination of the faucet angle can not only be used for the design of the entire vehicle, but also for the design of human-computer interaction based on the rotation of the faucet, such as turning the faucet to a certain angle to trigger a certain function. This interesting design improves the user experience.

[0070] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. An angle detection device for a two-wheeled vehicle, characterized in that: It is installed between the connecting pipe (1) and the main pipe (2) of the vehicle and is used to detect the relative rotation angle between the connecting pipe (1) and the main pipe (2). The detection device comprises an induction ring (3) and a sensor device (5) opposite to the induction ring (3); one end of the induction ring (3) facing the sensor device (5) is a sensing surface, the sensing surface comprises an invalid sensing surface that is not perpendicular to the sensor device (5) and an effective sensing surface (301) that is perpendicular to the sensor device (5); the sensor device (5) only receives a signal reflected by the effective sensing surface (301).

2. The angle detection device for a two-wheeled vehicle according to claim 1, characterized in that: The effective sensing surface (301) evenly divides the rotation angle range of the steering wheel of the external vehicle; the angle between adjacent effective sensing surfaces (301) has a value range of 1°-15°.

3. The angle detection device for a two-wheeled vehicle according to claim 2, characterized in that: There is a difference in the transmission distance between the effective sensing surface (301) and the sensor device (5).

4. The angle detection device for a two-wheeled vehicle according to claim 2, characterized in that: An induction line (302) is arranged on the induction ring (3), and a groove is cut along the induction line (302) to obtain an effective induction surface (301); The sensing lines (302) include a positive direction sensing line for correction.

5. The angle detection device for a two-wheeled vehicle according to claim 4, characterized in that: The invalid sensing surface is an inclined surface that forms an angle with the horizontal plane; in the initial state, the line connecting the highest point and the lowest point of the invalid sensing surface is collinear with the longitudinal axis of the vehicle, and the positive direction sensing line falls on this collinear position.

6. The angle detection device for a two-wheeled vehicle according to claim 1, characterized in that: The sensor device (5) adopts an optical sensor; the sensor device (5) and the effective sensing surface (301) move relative to each other, and the relative position relationship between the sensor device (5) and the effective sensing surface (301) is: The sensor device (5) rotates with the swing of the faucet, and the effective sensing surface (301) is connected to the main pipe and has a constant position. Or: the sensor device (5) is connected to the main pipe (2) and has a constant position, and the effective sensing surface (301) is arranged on the connecting pipe (1) and rotates with the connecting pipe (1).

7. The angle detection device for a two-wheeled vehicle according to claim 6, characterized in that: On the premise that the sensor device (5) is a moving part, the sensor device (5) and the effective sensing surface (301) are arranged along the axial direction of the main pipe (2).

8. The angle detection device for a two-wheeled vehicle according to claim 6, characterized in that: On the premise that the effective sensing surface (301) is a moving part, the sensor device (5) and the effective sensing surface (301) are arranged radially.

9. The angle detection device for a two-wheeled vehicle according to claim 8, characterized in that: When the sensor device (5) and the effective sensing surface (301) are arranged radially, the effective sensing surface (301) is located at the bottom of the groove where it is located, and the groove wall is a non-reflective surface.

10. The angle detection device for a two-wheeled vehicle according to any one of claims 6 to 9, characterized in that: The light signal reflected by each effective sensing surface (301) is sensed by the sensor device (5) and outputs a single corresponding voltage.

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