CN217622959U

CN217622959U - Wheel and vehicle

Info

Publication number: CN217622959U
Application number: CN202123433912.2U
Authority: CN
Inventors: 李洁辰
Original assignee: Shanghai Rox Intelligent Technology Co Ltd
Current assignee: Shanghai Rox Intelligent Technology Co Ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-10-21
Anticipated expiration: 2031-12-30

Abstract

The application discloses wheel and vehicle, wherein the wheel includes: a wheel body; the resistance unit comprises a resistor, a first contact and a second contact, the resistor is electrically connected with the first contact, the first contact is electrically isolated from the second contact, and the first contact and the second contact are both in contact with the outside, wherein N is an integer greater than or equal to 1; and the control module is arranged on the wheel body, is electrically connected with the N resistance units and is used for acquiring the resistance parameters of the N resistance units. The method and the device can well realize the measurement of the wading depth of the vehicle.

Description

Wheel and vehicle

Technical Field

The application belongs to the technical field of vehicles, and particularly relates to a wheel and a vehicle.

Background

When the vehicle wades, the larger the wading depth is, the larger the risk of the vehicle is, and therefore, the measurement of the wading depth of the vehicle is more critical. At present, a differential pressure sensor, an ultrasonic sensor, an image sensor, and the like are generally used to measure the depth of wading. However, the differential pressure sensor needs to be immersed in water for measurement, so that the differential pressure sensor needs to be arranged at a height lower than the chassis of the vehicle as much as possible, and the differential pressure sensor is easy to scratch during the running process of the vehicle; for ultrasonic sensors, this can lead to false measurements due to their inability to accurately distinguish between water and solids; for the image sensor, an image recognition algorithm is usually required to identify the feature points from the image, and the implementation process is complex.

Therefore, the wading depth measuring mode adopted in the prior art is difficult to meet the requirement.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a wheel and a vehicle to solve the technical problem that the wading depth measurement mode adopted in the prior art is difficult to meet the requirement.

In a first aspect, an embodiment of the present application provides a wheel, including:

a wheel body;

the wheel comprises N resistance units arranged on the wheel body, wherein each resistance unit comprises a resistor, a first contact and a second contact, the resistor is electrically connected with the first contact, the first contact is electrically isolated from the second contact, and the first contact and the second contact are both in contact with the outside, wherein N is an integer greater than or equal to 1;

and the control module is arranged on the wheel body, is electrically connected with the N resistance units and is used for acquiring the resistance parameters of the N resistance units.

In some embodiments, a surface of the wheel between the first contact and the second contact is provided with a water resistant layer.

In some embodiments, the first contact and the second contact protrude from a surface of the wheel body, and side surfaces of the first contact and the second contact are each provided with an insulating layer or a water blocking layer.

In some embodiments, the control module comprises a controller and a wireless transmission device, wherein,

the controller is electrically connected with the N resistance units and is used for acquiring resistance parameters of the N resistance units;

the wireless transmitting device is in signal connection with the controller and is in communication connection with the wireless receiving device.

In some embodiments, N is greater than 1, the N resistance units are arranged at intervals along a circumferential direction of the wheel or at intervals along a straight line, the N resistance units are electrically connected to the control module after being connected in parallel, and the control module is configured to obtain resistance values of the N resistance units.

In some embodiments, the N resistance units are arranged at intervals along a circumferential direction of the hub at a rim of the hub.

In some embodiments, the control module is located in a central region of the hub.

In some embodiments, the N resistance units are electrically connected to the control module by wires disposed at spokes of the hub.

In some embodiments, the resistance of the resistor of each resistor unit is equal to and much larger than the resistance of water.

In some embodiments, N is equal to 1, and the control module is configured to obtain a resistance value variation parameter of the resistance unit.

In a second aspect, embodiments of the present application provide a vehicle including a wheel of the first aspect.

In the embodiment of the application, the resistance unit and the control module are arranged on the wheel body, when a vehicle wades, the first contact and the second contact of the resistance unit submerged by water can be conducted through water, and the control module is enabled to obtain the corresponding resistance parameters. Since the resistance parameter is related to the wading depth, the wading depth can be calculated from the acquired resistance parameter. Therefore, the measuring method and the measuring device can well measure the wading depth of the vehicle.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a wheel provided in an embodiment of the present application;

fig. 2 is a schematic diagram illustrating wading depth measurement and wireless wading depth information transmission provided by an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a wheel provided by an embodiment of the present application;

FIG. 4 is a schematic structural diagram of another wheel provided in the embodiments of the present application;

fig. 5 shows a schematic structural diagram of another wheel provided in the embodiment of the present application.

Reference numerals:

1. a wheel; 10. a wheel body; 101. a tire; 102. a hub; 20. a resistance unit; 30. a control module; 202. a first measurement point; 203. a second measurement point; 2041. a resistance; 2042. a first contact; 2043. a second contact; 31. a controller; 32. and a wireless transmitting device.

Detailed Description

Features of various aspects and exemplary embodiments of the present application will be described in detail below, and in order to make objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.

In the description of the present application, it is to be noted that, unless otherwise specified, "a plurality" means two or more.

The directional terms used in the following description are intended to refer to directions shown in the drawings, and are not intended to limit the specific structure of the present application. In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood as appropriate by one of ordinary skill in the art.

Due to climate change and the like, the probability of extreme weather is increasing, including rain disasters. In a rain disaster, ponding is often generated due to excessive rainfall, and when a vehicle runs through the ponding, the vehicle is often damaged due to the fact that the water level of the ponding is too deep. In order to avoid the problem that a vehicle is damaged because a user cannot know the depth of accumulated water in time, a differential pressure type sensor, an ultrasonic sensor, an image sensor and the like are adopted to measure the wading depth in the prior art, but the above measuring methods cannot meet the requirements of the user due to respective defects.

In order to solve the prior art problem, the embodiment of the application provides a wheel and a vehicle.

The following first describes a wheel provided in an embodiment of the present application.

As shown in fig. 1, the wheel 1 may include:

a wheel body 10;

the vehicle wheel comprises N resistance units 20 arranged on a wheel body 10, wherein each resistance unit 20 comprises a resistance 2041, a first contact 2042 and a second contact 2043, the resistance 2041 is electrically connected with the first contact 2042, the first contact 2042 is electrically isolated from the second contact 2043, the first contact 2042 and the second contact 2043 are both in contact with the outside, and N is an integer greater than or equal to 1;

the control module 30 disposed on the wheel body 10 is electrically connected to the N resistance units 20, and is configured to obtain resistance parameters of the N resistance units 20.

The control module 30 and the N resistance units 20 basically form a wading depth measuring circuit. The control module 30 may be electrically connected to the N resistance units 20 through the first measurement point 202 and the second measurement point 203. In this measuring circuit, except for the first contact 2042 and the second contact 2043, other components and parts are all insulating waterproof settings.

Because the first contact 2042 and the second contact 2043 are electrically isolated, and both the first contact 2042 and the second contact 2043 are in contact with the outside, the first contact 2042 and the second contact 2043 are not conducted when the wheel is in a non-wading state, and the first contact 2042 and the second contact 2043 can be conducted through water when the wheel is in a wading state.

When the wheel wades, the first contact 2042 and the second contact 2043 in the resistance unit 20 are connected by water, so that the resistance value changes, the control module 30 may obtain resistance parameters corresponding to the resistance value change condition through the first measurement point 202 and the second measurement point 203, and then may estimate the wading depth according to the obtained resistance parameters.

The implementation subject of estimating the wading depth according to the resistance parameter may be the control module 30, or may be a vehicle, such as a vehicle controller. For the former, the control module 30 may be a resistance tester with computing capability or a chip with resistance measurement capability, such as a microcontroller. After the resistance parameters are obtained, the control module 30 may estimate the wading depth according to the resistance parameters, and transmit the water depth signal corresponding to the wading depth to the wireless receiving device in a wireless communication manner (e.g., bluetooth, wifi, etc.). After receiving the water depth signal, the wireless receiving device may transmit the water depth signal to a vehicle controller of the vehicle, so that the vehicle controller executes a corresponding control strategy according to the water depth signal, or may transmit the signal to a user terminal, such as an on-vehicle terminal, an on-vehicle UI device, a mobile terminal (e.g., a user mobile phone) paired with the vehicle, and so on, so as to output the water depth information to a user, such as a driver. In the latter case, the control module 30 may transmit the resistance parameter to the wireless receiving device by way of wireless communication after acquiring the resistance parameter. After the wireless receiving device receives the resistance parameters, the resistance parameters can be transmitted to a vehicle controller of the vehicle, and the vehicle controller estimates the wading depth according to the obtained resistance parameters.

In the embodiment of the application, the resistance unit 20 and the control module 30 are arranged on the wheel body 10, and when the vehicle wades, the first contact 2042 and the second contact 2043 of the resistance unit 20 submerged by water can be conducted through water, so that the control module 30 obtains the corresponding resistance parameter. Since the resistance parameter is related to the wading depth, the wading depth can be calculated from the acquired resistance parameter. Therefore, the measuring method and the measuring device can well measure the wading depth of the vehicle.

When the vehicle wades, moisture is likely to remain on the wheel surface, and this moisture may cause the first contact 2042 and the second contact 2043 to be erroneously connected in an unsubmerged state.

In view of this, in some embodiments, the wheel surface between the first contact 2042 and the second contact 2043 may be provided with a water-blocking layer, or the first contact 2042 and the second contact 2043 may be appropriately protruded from the wheel surface, and an insulating layer or a water-blocking layer may be provided on the side surface of the first contact 2042 and the second contact 2043. By providing such a configuration, it is possible to prevent the first contact 2042 and the second contact 2043 from being erroneously conducted in a state where they are not submerged, and thus, the accuracy of measurement can be improved.

In some embodiments, as shown in fig. 2, the control module 30 includes a controller 31 and a wireless transmitting device 32, wherein the controller 31 is electrically connected to the N resistance units 20 for obtaining resistance parameters of the N resistance units 20; the wireless transmitting device 32 is in signal connection with the controller 31 and is in communication connection with the wireless receiving device.

In the embodiment of the present application, the number of the resistance units may be plural or one, and the two embodiments are specifically described below.

In some embodiments, as shown in fig. 3, the number of the resistance units 20 is multiple, that is, N is greater than 1, N resistance units 20 are arranged on the wheel body 10 at intervals along the circumferential direction of the wheel body 10, the N resistance units 20 are connected in parallel and then electrically connected to the control module 30, and the control module 30 is configured to obtain the resistance values of the N resistance units 20.

It should be noted that N resistance units 20 may be arranged on the wheel body 10 at intervals along a straight line, which will not be described in detail since it is easy to understand.

The control module 30 and the N resistance units 20 basically form a wading depth measuring circuit. In the measuring circuit, the resistance units 20 are connected in parallel to a first measuring point 202 and a second measuring point 203, respectively, and the control module 30 is electrically connected to the first measuring point 202 and the second measuring point 203. Specifically, in each resistance unit 20, the resistance 2041 is electrically connected to the first contact 2042 and the first measurement point 202, the second contact 2043 is electrically connected to the second measurement point 203, the first contact 2042 is electrically isolated from the second contact 2043, and both the first contact 2042 and the second contact 2043 are in contact with the outside.

In this embodiment, when the first contact 2042 and the second contact 2043 of any number of the resistor units 20 are conducted, the whole measuring circuit is in a conducting state, and a corresponding resistance value is generated between the first measuring point 202 and the second measuring point 203. And, the larger the number of the resistance units 20 turned on, the smaller the resistance value generated between the first measurement point 202 and the second measurement point 203.

When the wheel wades, the first contact 2042 and the second contact 2043 in the resistor unit 20 are connected by water, so that the resistance value between the first measurement point 202 and the second measurement point 203 changes, and thus, the number of wading resistor units 20 can be determined according to the resistance value between the first measurement point 202 and the second measurement point 203. Since the wading depth is positively correlated with the number of wading resistance cells 20, the wading depth can be determined according to the number of wading resistance cells 20.

In some embodiments, the control module 30 is further configured to:

estimating the number of inundations of the resistance unit 20 according to the resistance value;

and estimating the wading depth of the vehicle according to the arrangement parameters of the N resistance units 20 on the wheel body 10 and the inundation quantity.

In this embodiment, the control module 30 is electrically connected to the first measurement point 202 and the second measurement point 203, and can obtain or detect the resistance value between the first measurement point 202 and the second measurement point 203, and calculate the corresponding wading depth according to the resistance value. When the wheel wades, the first contact 2042 and the second contact 2043 in the resistance unit 20 are conducted through water, the control module 30 may measure the resistance at the first measurement point 202 and the second measurement point 203, determine the number of the wading resistance units 20 according to the measured resistance value, estimate the wading depth, and generate a water depth signal according to the wading depth.

In some embodiments, the resistance 2041 of each resistance unit 20 is equal and much greater than the resistance of water.

Thus, the resistance values of the respective resistance units 20 are set to be equal, and the correspondence between the resistance value of the measurement circuit and the wading depth can be made more accurate. The resistance of the resistor 2041 is set to be much larger than the resistance of water, so that the difference between the resistance of water and the resistance of the resistor 2041 is prevented from being small, and the resistor 2041 of the measuring circuit is prevented from being greatly influenced. In summary, setting the resistors 2041 of the resistor unit 20 to be equal in resistance and much larger than that of water enables the wading depth measurement to be more accurate.

In some embodiments, as shown in fig. 3, the wheel body 10 generally includes a tire 101 and a hub 102, and the n resistance units 20 may be disposed on the hub 102 of the wheel body 10.

In this embodiment, the N resistance units 20 may be provided outside the hub 102 of the wheel body 10, or may be provided inside the hub 102. The N resistance units 20 may be disposed on the hub 102 of the wheel body 10 in a fixed arrangement or a mounting arrangement. The fixing device can comprise at least one of welding fixing, screw fixing or steel plate fixing, and the installation device can comprise at least one of clamping installation, key connection installation or pasting installation. For example, the N resistor units 20 may be fixed on a PCB or a plastic member, and then the PCB or the plastic member may be disposed on the hub 102 by a fixing arrangement or an installation arrangement.

Therefore, by arranging the N resistance units 20 on the hub, on one hand, the structural strength of the hub is relatively stable, so that the measuring circuit can be kept in a stable state, and the stability and reliability of the measuring circuit can be ensured; on the other hand, the hub can not be directly contacted with the road surface, the vibration borne by the hub is greatly weakened under the buffer action of the tire, and the hub is generally concave relative to the tire, so that the safety of a measuring circuit can be ensured; on the other hand, when the accumulated water is shallow and does not overflow the tire, the influence of the accumulated water on the vehicle can be basically ignored, and when the accumulated water overflows the tire and reaches the wheel hub, the measuring circuit can measure the wading depth in time, so that the timeliness of the wading depth measurement can be ensured.

In some embodiments, as shown in fig. 4, a plurality of resistor units 20 are arranged at circumferentially spaced intervals along the hub 102 at the rim of the hub 102.

Therefore, the plurality of resistance units are arranged on the rim closer to the tire, the wading depth can be measured when the wading depth of the vehicle is shallow, the plurality of resistance units are circumferentially arranged on the rim of the wheel hub, so that at least one resistance unit is arranged on one side close to a driving road surface no matter which angle the wheel is driven, and further, the accurate measurement of the wading depth of the vehicle can be carried out no matter which angle the wheel is driven. Therefore, the plurality of resistance units are arranged on the rim of the hub 102 at intervals along the circumferential direction of the hub 102, so that the measuring circuit can measure the wading depth more accurately.

In some embodiments, the resistor units 20 are arranged at equal intervals on the rim.

As an example, N resistor units 20 are arranged on the rim at equal intervals, the radius of the tire 101 is R1, the radius of a circle formed by the resistor units 20 arranged at equal intervals is R2, and the resistance value of the resistor unit 20 is R. The calculation method of the wading depth at this time can be as shown in table 1:

TABLE 1

Thus, by providing the plurality of resistor units on the hub at equal intervals, the number of wading resistor units can be equal at the same water level regardless of the angle at which the wheel is driven, and further, the measured resistance values can be equal because the number of wading resistor units is equal. Therefore, the number of the wading resistor units and the wading depth can be accurately corresponding to the resistance value detected by the controller no matter which angle the wheel runs at during the running process of the vehicle. The plurality of resistance units are arranged on the hub at equal intervals so that the wading depth measured by the measuring circuit can be more accurate.

In some embodiments, as shown in fig. 4, first measurement point 202 and second measurement point 203 may be located in a central region of hub 102.

The measuring points are arranged in the central area of the hub 102, so that no matter which angle the wheel runs to, the measuring points are all located at positions far away from the road surface where the vehicle runs, the probability that the measuring points wade can be further reduced when the vehicle wades, and further, the risk that the measuring points cannot accurately measure the resistance due to wading can be reduced.

In addition, the first measurement point 202 and the second measurement point 203 are provided in the central region of the hub 102, which helps to equalize the electrical connection distances between the respective resistance units 20 and the measurement points, and enables the circuit configuration of the measurement circuit to be optimized. Especially, when the resistor units 20 are arranged at intervals along the circumferential direction of the hub 102, the distances between the resistor units 20 and the measuring points are substantially the same.

In some embodiments, as shown in FIG. 4, the control module 30 is located in a central region of the hub 102.

By locating the control module 30 and the measuring point in the central region of the hub, the distance between the control module 30 and the measuring point can be reduced, and further, the length of the wires electrically connected between the control module 30 and the measuring point can be reduced. This can avoid a problem of a decrease in the wire resistance due to an excessively long wire to the accurate value of the resistance value in the resistance unit 20 measured by the control module 30.

In some embodiments, as shown in fig. 4, the N resistor units 20 are electrically connected to the control module 30 by wires, which are disposed on the spokes of the hub 102.

The spokes of the hub 102 are arranged substantially in the radial direction of the hub 102, which corresponds to the bridge between the rim and the central area, and therefore, the wires are arranged to the spokes, making the connection between the resistance unit 20 and the measuring point more convenient.

The above is a related embodiment of a plurality of resistance units, and an embodiment of a single resistance unit is described below.

In some embodiments, as shown in fig. 5, the number of the resistor units 20 is one, and the control module 30 is configured to obtain the resistance value change parameter of the resistor unit 20.

In the case where there is only one resistor unit 20, the resistance value obtained by the control module 30 varies periodically during the wheel rotation when the wheel is wading, and the variation period of the resistance value is related to the water depth and the wheel rotation speed. Under the same rotating speed, the water depth is in direct proportion to the change period of the resistance value. Therefore, in this embodiment, the wading depth of the wheel can be estimated based on the resistance value variation parameter and the wheel rotation speed. Here, the resistance value change parameter may be understood as a change period or a change frequency of the resistance value, and the resistance value change parameter may be represented by a resistance value square wave diagram.

In some embodiments, the control module 30 is further configured to:

acquiring the rotating speed of a wheel;

and estimating the wading depth of the vehicle according to the resistance value change parameter and the rotating speed.

In this embodiment, when the wheel wades, the first contact 2042 and the second contact 2043 in the resistance unit 20 are electrically connected through water, the control module 30 may obtain or detect a resistance change parameter between the first measurement point 202 and the second measurement point 203, the control module 30 may further obtain a rotation speed of the wheel through the wheel speed sensor, and may calculate a corresponding wading depth through the resistance change parameter and the rotation speed, and then generate a water depth signal according to the wading depth.

The embodiment of the application also provides a vehicle, which comprises the wheel in any embodiment. In addition, the vehicle can also comprise a wireless receiving device, a vehicle control unit, a user terminal and other equipment.

The vehicle of the embodiment of the application has the functions of the wheels described in any embodiment above, and can achieve the corresponding technical effects, and for the sake of brevity, the description is omitted here.

It should be understood that the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered within the scope of the present application.

Claims

1. A wheel, comprising:

a wheel body;

the resistance unit comprises a resistor, a first contact and a second contact, the resistor is electrically connected with the first contact, the first contact is electrically isolated from the second contact, and the first contact and the second contact are both in contact with the outside, wherein N is an integer greater than or equal to 1;

2. A wheel according to claim 1, wherein a water-resistant layer is provided on the surface of the wheel between the first and second contact points.

3. A wheel according to claim 1, wherein the first contact and the second contact each protrude from a surface of the wheel body, and wherein side surfaces of the first contact and the second contact are each provided with an insulating layer or a water-blocking layer.

4. The wheel of claim 1, wherein the control module comprises a controller and a wireless transmission device, wherein,

5. The wheel according to claim 1, wherein N is greater than 1, the N resistance units are arranged on the wheel at intervals in a circumferential direction of the wheel or at intervals in a straight line, the N resistance units are electrically connected to the control module after being connected in parallel, and the control module is configured to obtain resistance values of the N resistance units.

6. A wheel according to claim 5, wherein said N resistance units are provided at the hub of said wheel.

7. The wheel of claim 6, wherein the N resistive elements are arranged at circumferentially spaced intervals along the hub at a rim of the hub.

8. A wheel according to claim 6, wherein the control module is located in a central region of the hub.

9. A wheel according to claim 6, wherein said N resistance units are electrically connected to said control module by wires arranged at spokes of said hub.

10. A wheel according to claim 1, wherein N is equal to 1, and said control module is adapted to obtain a resistance variation parameter of said resistive element.

11. A vehicle, characterized by comprising a wheel according to any one of claims 1 to 10.