CN218287684U - Sensor cleaning device, sensor and vehicle - Google Patents
Sensor cleaning device, sensor and vehicle Download PDFInfo
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- CN218287684U CN218287684U CN202221821048.5U CN202221821048U CN218287684U CN 218287684 U CN218287684 U CN 218287684U CN 202221821048 U CN202221821048 U CN 202221821048U CN 218287684 U CN218287684 U CN 218287684U
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Abstract
The utility model provides a sensor cleaning device, sensor and vehicle, sensor cleaning device takes place component and vibration conduction component including the vibration, vibration conduction component one end with the vibration takes place the component and connects, and the other end is connected with the printing opacity component of sensor, the vibration conduction component will the vibration of vibration emergence component is enlargied and is transmitted the printing opacity component, wherein, the vibration conduction component constructs into the flexible hinge that can transmit and enlarge the vibration.
Description
Technical Field
The utility model relates to an automobile sensor technical field specifically relates to a sensor cleaning device, have this sensor cleaning device's sensor and have the vehicle of this sensor.
Background
Along with the continuous development of artificial intelligence technology, the unmanned technology is mature day by day. The reliability and safety issues of image sensors for unmanned technologies have not been adequately addressed in inclement weather or environments. In most places, weather such as rain, snow, fog, frost, ice and the like can occur, and particularly, in the running process of a vehicle, due to the complexity of road conditions and the interweaving of various physical conditions, a large amount of pollutants such as water vapor, liquid drops, sludge, frost and the like can be gathered and adhered on the surface of an image sensor, so that the imaging quality of the image sensor is influenced, and the unmanned function is finally influenced.
Conventional image sensor cleaning devices use high pressure water or air flow to wash away or blow away contaminants on the surface of the image sensor, for example, by spraying liquid (water) or air. The water spraying device needs additional space and parts for storing and transmitting the cleaning liquid, and the continuous working time of the water spraying device is limited by the storage space of the cleaning liquid; the large-space water storage container increases the weight of the vehicle, thereby reducing the power performance and energy conversion efficiency of the vehicle.
The air injection device requires additional space and parts for generating and transmitting compressed air. Its duration is limited by the power of the air compressor and the capacity of the battery system. Especially for new energy automobiles, the high-power air compressor capable of achieving the cleaning effect is introduced, so that the endurance mileage of the automobile can be greatly reduced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a technical problem that an aspect will be solved is how general additional mode of introducing clean liquid or gas realizes on-vehicle image sensor's cleanness.
Furthermore, other aspects of the present invention are also directed to solving or alleviating other technical problems in the prior art.
The utility model provides a sensor cleaning device, sensor and vehicle particularly, according to the utility model discloses an aspect provides:
a sensor cleaning apparatus comprising a vibration generating element and a vibration conducting element, the vibration conducting element being connected at one end to the vibration generating element and at the other end to a light transmitting element of a sensor, the vibration conducting element amplifying and transmitting vibrations of the vibration generating element to the light transmitting element, wherein the vibration conducting element is configured as a flexible hinge capable of transmitting and amplifying vibrations.
Alternatively, according to an embodiment of the present invention, the flexible hinge is configured in a hollow cylindrical shape, the flexible hinge has a plurality of hinge units connected in a ring along a circumferential direction thereof, the hinge units have a plurality of lever units connected to each other along an axial direction of the flexible hinge, and each lever unit amplifies a displacement input thereto and outputs to a lever unit adjacent thereto.
Alternatively, according to an embodiment of the present invention, each of the lever units has a support portion extending along an axial direction of the flexible hinge and a lever portion extending along a radial direction of the flexible hinge, the lever portion has a first end portion and a second end portion, the first end portion of the lever portion is connected with the support portion and takes the first end portion as a fulcrum, and the second end portion of the lever portion is connected with the first end portion of the lever portion of an adjacent lever unit along the axial direction of the flexible hinge.
Alternatively, according to an embodiment of the present invention, the vibration generating element is configured in a ring shape matching with a shape of an end of the vibration conducting element, and the vibration generating element is an annular array of piezoelectric ceramics or linear piezoelectric stacks or an annular array of voice coil motors or linear motors.
Optionally, in accordance with an embodiment of the present invention, the sensor cleaning device further comprises a housing, the vibration generating element and the vibration conducting element are both disposed within the housing, the optically transparent element being disposed at one end of the housing.
Optionally, according to an embodiment of the present invention, the sensor cleaning device further comprises an elastic element disposed between the light transmissive element and the housing.
Optionally, according to an embodiment of the present invention, the housing is configured as a hollow cylinder, and the elastic element is configured as a ring and arranged between the light transmitting element and the housing around the light transmitting element.
Alternatively, according to an embodiment of the invention, the elastic element is made of rubber or plastic or resin.
According to another aspect of the present invention, there is provided a sensor, wherein the sensor comprises the sensor cleaning device and the light transmissive element described above, the light transmissive element is arranged at one end of the sensor cleaning device and is connected to the vibration conductive element of the sensor cleaning device.
Optionally, in accordance with an embodiment of another aspect of the present invention, the sensor further includes a lens barrel, one end of which is disposed inside a housing of the sensor cleaning device, and the vibration conducting element and the vibration generating element are sleeved on the lens barrel, and an optical element is mounted in an end portion of the lens barrel disposed in the housing.
According to the utility model discloses a still another aspect, the utility model provides a vehicle, wherein, the vehicle includes above the sensor.
The utility model discloses an useful part includes: the utility model discloses a sensor cleaning device is integrated in image sensor's inside, does not occupy extra space. The device composed of the ultrasonic generating element and the conducting element has low power and high efficiency, and cannot generate great influence on the power and the driving range of the vehicle when being used continuously. The conductive element also plays a role in amplifying the amplitude, so that the light-transmitting element works at a non-resonance frequency point without influencing the microscopic shape and performance of the light-transmitting element. Meanwhile, the conducting element has high strength and good reliability, has larger load driving capability, is not limited by various optical designs of the image sensor, and can clean the light-transmitting element with larger volume and weight.
Drawings
The above and other features of the present invention will become apparent with reference to the accompanying drawings, in which,
fig. 1 shows a schematic overall structural view of a sensor according to an embodiment of the present invention, wherein the sensor has a sensor cleaning device;
fig. 2 shows a cross-sectional view of a proposed sensor according to an embodiment of the invention, wherein the sensor has a sensor cleaning device;
figure 3 shows a schematic view of the overall structure of a vibration transmitting element of a proposed sensor cleaning apparatus according to an embodiment of the present invention,
fig. 4 shows a schematic diagram of the operation of a vibration-conducting element of a sensor cleaning device according to an embodiment of the invention.
Detailed Description
It is easily understood that, according to the technical solution of the present invention, a person skilled in the art can propose various alternative structural modes and implementation modes without changing the essential spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical solutions of the present invention, and should not be considered as limiting or restricting the technical solutions of the present invention in their entirety or in any other way.
The directional terms upper, lower, left, right, front, rear, front, back, top, bottom and the like that are or may be mentioned in this specification are defined relative to the configurations shown in the drawings, and are relative concepts that may be changed accordingly depending on the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms. Furthermore, the terms "first," "second," "third," and the like, are used for descriptive and distinguishing purposes only and are not to be construed as indicating or implying relative importance of the respective components.
Referring to fig. 1 and 2, there are shown a schematic overall structural view and a cross-sectional view of a proposed sensor having a sensor cleaning device 100 integrated therein according to an embodiment of the present invention. The sensor cleaning device 100 comprises a vibration generating element 1 and a vibration conducting element 2, the vibration generating element 1 being used to provide vibrations, in particular ultrasonic vibrations, the vibration generating element 1 being configured, for example, in the form of a ring. In one embodiment of the present invention, the vibration generating element 1 is, for example, an annular array of ring-shaped piezoelectric ceramics or linear piezoelectric stacks, or an annular array of ring-shaped voice coil motors or linear motors. The vibration conduction member 2 is used to transmit the ultrasonic vibration generated by the vibration generating member 1 to the light transmitting member 200 of the sensor, and one end of the vibration conduction member 2 is connected to the vibration generating member 1 and the other end is connected to the light transmitting member 200. Since the translucent element 200 on the sensor is generally configured as a circular lens, for example as a flat lens, a convex lens with one or both convex surfaces, a concave lens with one or both concave surfaces, etc., in this embodiment the vibration-conducting element 2 is configured as a hollow cylinder, one end of which is connected to the outer circumference of the translucent element 200 and the other end of which is connected to the vibration-generating element 1 in a form-fitting manner, for example, the vibration-generating element 1 bears against one end of the vibration-conducting element 2. Of course, in other embodiments, the light transmissive element 200 may have other shapes, such as square, rectangular, etc., in which case the shapes of the vibration conducting element 2 and the vibration generating element 1 are matched accordingly.
Referring to fig. 3, there is shown a schematic structural view of the vibration conducting element 2 of the proposed sensor cleaning device 100 according to an embodiment of the present invention. The vibration conducting element 2 is configured as a hollow cylindrical Flexible hinge (Flexible Joint) and has a plurality of hinge units 21 (outlined by a large dashed line in fig. 3) connected in a ring in the circumferential direction thereof. Each hinge unit 21 has a plurality of lever units 210 (outlined by a small dashed line in fig. 3) connected to each other in the axial direction of the flexible hinge, wherein each lever unit can amplify and output a displacement (caused by a force input thereto) or vibration input thereto to a lever unit adjacent thereto. Specifically, the lever unit 210 has an axis along the flexible hinge 2A support portion 211 extending to the direction and a lever portion 212 extending in the radial direction of the flexible hinge 2, the support portion and the lever portion of each lever unit being connected to each other, and the length of the lever portion of each lever unit being the same. At the connection of the support portion 211 and the lever portion 212, the thickness of the lever portion 212 is smaller than that at other portions. The lever portion 212 has a first end portion and a second end portion, the first end portion of the lever portion 212 is connected to the support portion 211 with the first end portion as a fulcrum, and the second end portion of the lever portion 212 is connected to the first end portion of the lever portion of the adjacent lever unit 220 in the axial direction of the flexible hinge 2. In this arrangement, the lever portions of the adjacent two lever units are parallel to each other, but the positions of the two ends thereof are just opposite. In the embodiment of fig. 3, in one hinge unit 21, the support portions of all the lever units integrally form two cylindrical structures extending in the axial direction of the flexible hinge, and the lever portions of the lever units form a rod-shaped structure extending in the radial direction of the flexible hinge between the two cylindrical structures. Referring to fig. 4, there is shown a schematic diagram of the operation of the vibration conducting element 2 of the proposed sensor cleaning device 100 according to an embodiment of the present invention. Fig. 4 shows the operation principle of only one hinge unit, and the operation principle of the other hinge units is the same. For the first lever unit 210 in fig. 4, a displacement x is assumed 0 If the moment arm of the force applied to any point of the lever part 212 of the first lever unit 210 to cause the displacement is a, the moment arm corresponding to the displacement outputted from the first lever unit 210 to the adjacent second lever unit 220 is the length of the entire lever part 212 of the first lever unit 210, and b is b, which is a moment arm corresponding to the displacement outputted from the first lever unit 210 to the adjacent second lever unit 220, and b is always greater than or equal to a, and the displacement x outputted from the first lever unit 210 to the adjacent second lever unit 220 is x 1 Must be greater than or equal to x 0 I.e. x 1 =x 0 * b/a. And then due to the displacement x input to the second lever unit 220 1 The distance from the corresponding force application point to the fulcrum, i.e. the corresponding force arm is c, c is much smaller than b, and the force is output from the second lever unit 220 to the adjacent third lever unitDisplacement x of element 230 2 The corresponding moment arm is the length of the whole lever part of the second lever unit 220, i.e. b, and the displacement x output from the second lever unit 220 to the third lever unit 230 can be calculated 2 =x 1 * b/c, so x 2 Relative to x 1 And is amplified again. After transmission of a plurality of lever units, the displacement x is input initially 0 Is progressively amplified. Assuming that the total number of the lever units is n, the displacement x of the final output n =x 0 * b ^ n/(a x c ^ (n-1)). In this embodiment, the flexible hinge includes 4 hinge units, each hinge unit includes 4 lever units, and the hinge units and the lever units are sized such that the total amplification ratio is about 10 (i.e., b ^ 4/(a ^ c ^ 3) = 10), that is, the vibration of the input can be amplified ten times for output by the flexible hinge, although the amplification ratio of the flexible hinge can be changed by increasing or decreasing the lever units as necessary. The flexible hinge can be realized by machining a groove in a hollow cylindrical part. The two grooves parallel to the peripheral direction form a long-strip-shaped lever part, and a connecting part is reserved in each groove and used for connecting two adjacent lever parts; the portion between the two grooves on a straight line in the axial direction forms a fulcrum of the lever portion.
Referring again to fig. 2, in one embodiment of the present invention, the sensor cleaning device 100 further comprises a housing 3, the housing 3 is also constructed in a hollow cylindrical structure, and a light transmitting member 200 is installed at one end of the housing 3, and the vibration generating member 1 and the vibration conducting member 2 are disposed inside the housing 3.
In one embodiment of the present invention, the sensor cleaning device 100 further comprises an elastic element 4, the elastic element 4 is configured in a ring shape matching the outer peripheral shape of the light transmissive element 200, and is made of, for example, rubber or plastic or resin. The elastic member 4 is fitted over the outer periphery of the light transmitting member 200 and is disposed between the light transmitting member 200 and the housing 3 of the sensor cleaning device 100. The elastic element 4 fills up the space gap between the light-transmitting element 200 and the housing 3, and because of its elasticity, the elastic element 4 does not prevent the vibration of the light-transmitting element 200, but buffers the vibration of the light-transmitting element 200 to some extent, preventing the light-transmitting element 200 from damaging its microscopic shape due to an excessive vibration frequency.
When the sensor cleaning device 100 is in operation, the vibration generating element 1 generates mechanical vibrations at ultrasonic frequencies, the amplitude of the ultrasonic vibrations is amplified by the vibration conducting element 2, and the ultrasonic vibrations are transmitted to the light transmitting element 200 of the sensor surface to be forced. The vibration changes only the position of the light-transmitting element 200 and does not change the surface shape of the light-transmitting element 200, that is, does not affect the optical performance of the light-transmitting element 200, and thus, the vibration changes the surface tension of the surface of the light-transmitting element 200 and the surface tension of the liquid droplets on the light-transmitting element 200, the liquid droplets are broken into smaller liquid droplets along with the transmission of vibration energy, and meanwhile, a certain acceleration is obtained, so that the surface of the liquid droplets is raised, cavitation is generated around the raised surface, and the liquid is atomized into small-molecule aerosol. The aerial fog moves away from the surface of the image sensor along with the air current, and the cleaning effect is achieved.
In one embodiment of the present invention, the sensor of the present invention comprises a sensor cleaning device 100 and a light transmissive element 200, wherein the light transmissive element 200 is arranged at one end of the sensor cleaning device 100, for example at the end of the housing 3 of the sensor cleaning device 100 and is connected to one end of the vibration conducting element 2 of the sensor cleaning device 100, for example the light transmissive element 200 is attached to the end of the vibration conducting element 2 remote from the vibration generating element 1.
In one embodiment of the present invention, the sensor further includes a hollow cylindrical lens barrel 300, one end of the lens barrel 300 is fitted inside the housing 3 of the sensor cleaning device 100, the vibration conducting member 2 and the vibration generating member 1 are fitted over the lens barrel 300 and arranged between the lens barrel 300 and the housing 3, and the supporting portion 211 of the lever unit 210 of the vibration conducting member 2 is fixed to the lens barrel 300, for example. Other optical elements are also mounted in the end portion of the lens barrel 300 disposed in the housing 3.
It should be understood that the sensor of the present invention may be mounted on a variety of vehicles, including cars, trucks, buses, pure electric vehicles, hybrid vehicles, and the like. Accordingly, the subject matter of the present invention is also directed to protecting various vehicles equipped with the sensor of the present invention.
It should be understood that all the above preferred embodiments are exemplary and not restrictive, and that various modifications and changes in the specific embodiments described above may be made by those skilled in the art without departing from the spirit of the invention.
Claims (11)
1. A sensor cleaning device (100) comprising a vibration generating element (1) and a vibration conducting element (2), the vibration conducting element (2) being connected at one end to the vibration generating element (1) and at the other end to a light transmitting element (200) of the sensor, the vibration conducting element (2) amplifying and transmitting vibrations of the vibration generating element (1) to the light transmitting element (200), characterized in that the vibration conducting element (2) is configured as a flexible hinge capable of transmitting and amplifying vibrations.
2. The sensor cleaning device (100) according to claim 1, wherein the flexible hinge is configured in a hollow cylindrical shape, the flexible hinge has a plurality of hinge units (21) connected in a ring in a circumferential direction thereof, the hinge units (21) have a plurality of lever units (210) connected to each other in an axial direction of the flexible hinge, each lever unit amplifies a displacement input thereto and outputs to a lever unit adjacent thereto.
3. The sensor cleaning device (100) according to claim 2, wherein each of the lever units (210) has a support portion (211) extending in an axial direction of the flexible hinge and a lever portion (212) extending in a radial direction of the flexible hinge, the lever portion (212) having a first end portion and a second end portion, the first end portion of the lever portion (212) being connected to the support portion (211) and having the first end portion as a fulcrum, the second end portion of the lever portion (212) being connected to the first end portion of the lever portion of an adjacent lever unit in the axial direction of the flexible hinge.
4. The sensor cleaning apparatus (100) according to claim 2, characterized in that the vibration generating element (1) is configured in a ring shape matching the shape of one end of the vibration conducting element (2), the vibration generating element (1) being an annular array of piezo-ceramics or linear piezo-stacks or an annular array of voice coil motors or linear motors.
5. The sensor cleaning device (100) according to claim 1, characterized in that the sensor cleaning device (100) further comprises a housing (3), the vibration generating element (1) and the vibration conducting element (2) being both arranged within the housing (3), the light transmissive element (200) being arranged at one end of the housing (3).
6. The sensor cleaning device (100) according to claim 5, characterized in that the sensor cleaning device (100) further comprises an elastic element (4), the elastic element (4) being arranged between the light transmissive element (200) and the housing (3).
7. The sensor cleaning device (100) according to claim 6, characterized in that the housing (3) is configured as a hollow cylinder, the elastic element (4) is configured as a ring and arranged around the light-transmitting element (200) between the light-transmitting element (200) and the housing (3).
8. Sensor cleaning device (100) according to claim 6 or 7, characterized in that the elastic element (4) is made of rubber or plastic or resin.
9. A sensor, characterized by comprising a sensor cleaning device (100) according to any one of claims 1 to 8 and a light transmissive element (200), the light transmissive element (200) being arranged at one end of the sensor cleaning device (100) and being connected to a vibration conductive element (2) of the sensor cleaning device (100).
10. The sensor according to claim 9, characterized in that the sensor further comprises a lens barrel (300), one end of the lens barrel (300) is arranged inside a housing (3) of the sensor cleaning device (100), and the vibration conducting element (2) and the vibration generating element (1) are fitted over the lens barrel (300), an optical element being mounted in an end of the lens barrel (300) arranged in the housing (3).
11. A vehicle, characterized in that it comprises a sensor according to claim 9 or 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221821048.5U CN218287684U (en) | 2022-07-15 | 2022-07-15 | Sensor cleaning device, sensor and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221821048.5U CN218287684U (en) | 2022-07-15 | 2022-07-15 | Sensor cleaning device, sensor and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218287684U true CN218287684U (en) | 2023-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221821048.5U Active CN218287684U (en) | 2022-07-15 | 2022-07-15 | Sensor cleaning device, sensor and vehicle |
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|---|---|
| CN (1) | CN218287684U (en) |
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- 2022-07-15 CN CN202221821048.5U patent/CN218287684U/en active Active
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