CN115790687A - Optical sensing device and vehicle - Google Patents

Abstract

The embodiment of the application discloses optical sensing device and vehicle, optical sensing device includes: a housing having an accommodating chamber and a light transmission window communicating with the accommodating chamber; an optical cover disposed at the light transmission window; the optical sensor is positioned in the accommodating cavity and used for receiving the light transmitted through the optical cover; and the heating component comprises a light-transmitting electric heating layer, and the electric heating layer is attached to the surface of the optical cover and is in contact with the optical cover. The electric heating layer can heat the optical cover, make the temperature of optical cover evenly promote, thereby can avoid optical cover to go up the light transmissivity that water smoke or frost of condensing leads to the optical cover and reduce, electric heating layer can the printing opacity simultaneously, and electric heating layer and optical cover direct contact, there is not the substrate film between electric heating layer and the optical cover, eliminated the decay of substrate film to the light transmissivity of optical cover, can promote the light transmissivity of optical cover by a wide margin, thereby can guarantee optical sensing device's normal detection work.

Description

Optical sensing device and vehicle

Technical Field

The application relates to the technical field of optical sensing, in particular to an optical sensing device and a vehicle.

Background

The optical sensing device is a device capable of converting an optical signal into an electrical signal, and thus can be used to detect a part diameter, surface roughness, strain, displacement, vibration, velocity, acceleration, a shape of an object, and the like. The optical sensing device generally includes an optical sensor and a housing, the optical sensor is located in the housing, and in order to enable the optical sensor to normally receive light, an optical cover for transmitting light is generally arranged on the housing.

However, in some working environments, such as snowing environments, water mist or frost may condense on the optical cover, which may cause the light transmittance of the optical cover to decrease, thereby causing the optical sensing device to fail to work properly.

Disclosure of Invention

The embodiment of the application provides an optical sensing device and vehicle, can prevent that light and heat conversion covers and congeals water smoke or frost.

In a first aspect, an embodiment of the present application provides an optical sensing device, including: a housing having an accommodation chamber and a light transmission window communicating with the accommodation chamber; an optical cover disposed at the light transmission window; the optical sensor is positioned in the accommodating cavity, and the light receiving surface of the optical sensor faces the optical cover so as to receive the light transmitted through the optical cover; the heating assembly comprises a light-transmitting electric heating layer, and the electric heating layer is attached to the surface of the optical cover and is in contact with the optical cover.

In some embodiments of the present application, the heating assembly further comprises: and the conductive component is fixed on the optical cover and is electrically connected with the electric heating layer.

Based on above-mentioned embodiment, electrically connected of electric heating layer and other parts can be realized to electrically conductive part to force conduction between electrically heating layer and other parts has been cut off to electrically conductive part, and when taking place to shake or pull through the part that electrically connected of electrically conductive part and electric heating layer, the electric heating layer can not take place to shake or pull, thereby can prevent to lead to when other parts shake or pull that electric heating layer and optics cover to separate.

In some embodiments of the present application, the conductive component is formed on the optical cover by insert molding.

Based on the above-described embodiment, it is possible to greatly increase the connection strength and connection reliability of the conductive member and the optical cover, preventing the conductive member from coming off.

In some embodiments of the present application, the heating assembly further comprises: and the conductive electrode is electrically connected with the electric heating layer and the conductive part, and the resistivity of the preparation material of the conductive electrode is smaller than that of the preparation material of the electric heating layer.

Based on the embodiment, the electric connection between the electric heating layer and the conductive component is realized by utilizing the conductive electrode, the resistivity of the conductive electrode is relatively low, the resistance and the resistance voltage drop between the conductive electrode and the electric heating layer can be greatly reduced, the voltage of any two positions on the electric heating layer, which are connected with the conductive electrode, is kept consistent, and the heating efficiency and the heating uniformity of the electric heating layer are improved.

In some embodiments of the present application, the conductive electrode includes a first electrode electrically connected to the conductive member through the first extension, a second electrode electrically connected to the conductive member through the second extension, a first extension, and a second extension; the electric heating layer comprises a first side edge part and a second side edge part which are oppositely arranged, the first electrode is located on the first side edge part and electrically connected with the first side edge part, and the second electrode is located on the second side edge part and electrically connected with the second side edge part.

Based on above-mentioned embodiment, set up first electrode and second electrode near the edge of electric heating layer, can prevent that the light that passes the optics cover from being sheltered from by first electrode and second electrode and influencing optical sensor's normal work to make the most all can heat of electric heating layer, improve electric heating layer's heating efficiency.

In some embodiments of the present application, the first electrode has a length greater than or equal to a length of the first side edge portion, and the second electrode has a length greater than or equal to a length of the second side edge portion.

Based on the above embodiment, the contact area of the first electrode and the second electrode with the electric heating layer can be increased, so that the heatable part of the electric heating layer is increased, and the heating efficiency of the electric heating layer is improved.

In some embodiments of the present application, the conductive electrode is adhered to the optical cover, the electrical heating layer, and the conductive member.

Based on the embodiment, the electric connection between the electric heating layer and the conductive component is realized by the conductive electrode, the connection stability of the conductive electrode is improved, and the conductive electrode is prevented from falling off.

In some embodiments of the present application, the heating assembly further comprises: and a circuit board having one end soldered to the conductive member to achieve electrical connection with the conductive member.

Based on the embodiment, the circuit board can be used for realizing the electric connection between the components such as the power supply and the conductive component, so that the components such as the power supply and the conductive component are electrically connected with the electric heating layer, and the circuit board and the conductive component are connected in a welding mode, so that the connection strength and the reliability can be ensured.

In some embodiments of the present application, the optical enclosure comprises: the main body comprises a first side surface and a second side surface, the first side surface faces the accommodating cavity, and the second side surface is far away from the accommodating cavity; and the optical antireflection film is attached to the first side surface or/and the second side surface of the main body.

Based on the above embodiment, the optical antireflection film can improve the light transmittance of the optical cover to improve the intensity of light received by the optical sensor, so that the optical information input amount of the optical sensing device is improved, and the improvement of the identification precision, the identification success rate, the identification distance and the like of the optical sensing device is facilitated.

In some embodiments of the present application, the body includes a body portion and a hardened portion formed by hardening the first side or/and the second side of the body.

Based on the embodiment, the surface of the main body is hardened to form the hardened part on the surface of the main body, the hardened part can improve the surface wear resistance and the overall structural strength of the optical cover, and the hardened part has an anti-reflection effect and can improve the light transmittance of the optical cover.

In some embodiments of the present application, the body is a plastic body.

Based on the embodiment, the plastic has better impact resistance and cost advantage than glass, so that the impact resistance of the optical cover can be improved, and the cost of the optical cover can be reduced.

In some embodiments of the present application, the electrical heating layer includes an indium tin oxide layer, a nano-silver wire layer, a metal mesh layer, a conductive ink layer, or a carbon nano-bud layer.

Based on above-mentioned embodiment, indium tin oxide layer, nanometer silver line layer, metal mesh layer and carbon nanometer bud layer are good printing opacity conducting material, can heat the optics cover, can reduce the influence to the light transmissivity of optics cover simultaneously, guarantee optical sensing device's normal detection work.

In some embodiments of the present application, the optical sensing device further comprises a controller electrically connected to the optical sensor and the electrical heating layer.

Based on the embodiment, the controller can determine whether the optical cover has the undesirable phenomena of water mist or frost and the like according to the feedback signal of the optical sensor, and control the electric heating layer to heat the optical cover when the undesirable phenomena of water mist or frost and the like occur on the optical cover. For example, when frost appears on the optical cover, the light transmittance of the optical cover can be greatly reduced, which causes the intensity of light received by the optical sensor to be greatly reduced, at this time, the optical sensor can transmit a feedback signal to the controller, the controller controls the electric heating layer to be opened according to the feedback signal, the electric heating layer heats the optical cover, and in the heating process of the electric heating layer, the controller can also reduce the temperature of the electric heating layer or stop heating the electric heating layer according to the improvement of the light transmittance of the optical cover.

In a second aspect, the present application further provides a vehicle comprising a vehicle body and an optical sensing device as described in any of the above embodiments, the optical sensing device being mounted on the vehicle body.

The beneficial effect of this application does: the electric heating layer can heat the optical cover, the electric heating layer has higher heating efficiency and heating degree of consistency, make the temperature uniformity of optical cover promote, thereby can avoid condensing water smoke or frost on the optical cover to lead to the light transmissivity of optical cover to reduce, optical input receives the interference, thereby arouse optical distortion input error message and the system SNR to reduce the scheduling problem, electric heating layer can the printing opacity simultaneously, and electric heating layer and optical cover direct contact, there is not the substrate film between electric heating layer and the optical cover, the decay of substrate film to the light transmissivity of optical cover has been eliminated, can promote the light transmissivity of optical cover by a wide margin, guarantee the requirement of optical cover light transmissivity, thereby can guarantee optical sensing device's normal detection work.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or related technologies of the present application, the drawings needed to be used in the description of the embodiments or related technologies are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an optical sensing device according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of an optical cover and a heating element according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of an optical sensing device according to another embodiment of the present application.

Reference numerals:

10. a housing; 11. an accommodating chamber; 12. a light transmissive window; 20. an optical cover; 21. a main body; 211. a first side surface; 212. a second side surface; 213. a body portion; 214. a hardened portion; 22. an optical antireflection film; 30. an optical sensor; 40. a heating assembly; 41. an electric heating layer; 411. a first side edge portion; 412. a second side edge portion; 42. a conductive member; 421. a first pad; 422. a second pad; 43. a conductive electrode; 431. a first electrode; 432. a second electrode; 433. a first extension portion; 434. a second extension portion; 44. a circuit board; 50. and a controller.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and 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.

The optical sensing device is a device capable of converting an optical signal into an electrical signal, and thus can be used to detect a part diameter, surface roughness, strain, displacement, vibration, velocity, distance, acceleration, a shape of an object, and the like. The optical sensing device generally includes an optical sensor and a housing, the optical sensor is located in the housing, and in order to enable the optical sensor to normally receive light, an optical cover for transmitting light is generally arranged on the housing.

However, in some working environments, such as snowfall, water mist or frost may condense on the optical cover, which may cause problems such as decrease of light transmittance of the optical cover, disturbance of light input, optical distortion to input wrong information, and decrease of signal-to-noise ratio of the system, thereby causing the optical sensing apparatus to fail to work properly.

The embodiment of the application provides an optical sensing device and a vehicle, and aims to solve the problems that in some working environments, water mist or frost can be condensed on an optical cover of the optical sensing device, so that the light transmittance of the optical cover is reduced, the light input is interfered, optical distortion is caused, wrong information is input, the signal-to-noise ratio of a system is reduced, and the like, so that the optical sensing device cannot normally work.

In a first aspect, the present embodiment provides an optical sensing device, as shown in fig. 1, which includes a housing 10, an optical cover 20, an optical sensor 30, and a heating assembly 40.

The housing 10 has a receiving cavity 11 and a light transmission window 12 communicating with the receiving cavity 11, the housing 10 is used for protecting components such as the optical sensor 30, and the light transmission window 12 is used for allowing light outside the housing 10 to enter the receiving cavity 11. The material for manufacturing the housing 10 may be a non-light-transmitting material, such as a non-light-transmitting plastic, a metal, a wood, or a resin, and the embodiment of the present application is not particularly limited. The shape of the housing 10 may be cylindrical, square cylindrical or other shapes, and the embodiment of the present application is not particularly limited.

The optical cover 20 is disposed at the light transmission window 12 and is used for sealing the light transmission window 12, so that the optical cover 20 and the housing 10 can form a closed space; the optical cover 20 is made of a light-transmitting material, such as light-transmitting glass, light-transmitting plastic, or light-transmitting resin, so that light outside the housing 10 can transmit through the optical cover 20 to be emitted into the accommodating cavity 11. The shape of the optical cover 20 may be a circle, a square, or other shapes, and the embodiment of the present application is not particularly limited. The thickness of the optical cover 20 can also be selected according to actual needs, and the embodiments of the present application are not particularly limited.

The optical sensor 30 is located in the accommodating cavity 11, and a light receiving surface of the optical sensor 30 faces the optical cover 20 to receive the light transmitted through the optical cover 20. The light receiving surface of the optical sensor 30 is a surface on which the optical sensor 30 receives light, and the optical sensor 30 receives light incident into the housing cavity 11 through the optical cover 20 from outside the housing 10 and outputs a corresponding electrical signal. Taking the example that the optical sensing device is a laser radar applied to a vehicle, the optical sensing device emits a detection light beam to a target object according to an emission signal, the optical sensor 30 receives a reflected light beam reflected by the target object and outputs a corresponding reflection signal, and a control part in the optical sensing device processes the reflection signal to obtain parameters such as the distance, the direction, the height, the speed, the posture, the shape and the like of the target object, so that a radar detection function is realized. Of course, according to actual requirements, the optical sensing device can also achieve functions of detecting the diameter of a part, detecting surface roughness, detecting strain, detecting displacement, detecting vibration, detecting speed, detecting distance, detecting acceleration, detecting the shape of an object, and the like, and the specific operation principle of the optical sensor 30 is disclosed earlier in the related art, and the embodiment of the present application is not described in detail. The type and kind of the optical sensor 30 can be selected according to actual requirements. The optical sensor 30 may be mounted on the inner wall of the housing 10 by riveting, clipping, gluing or welding, etc. to prevent the optical sensor 30 and the housing 10 from moving relatively.

Specifically, as shown in fig. 2, the heating assembly 40 includes a light-transmitting electric heating layer 41, and the electric heating layer 41 is attached to the surface of the optical cover 20 and is in contact with the optical cover 20.

Wherein, the electric heating layer 41 may be provided only on the inner surface or the outer surface of the optical cover 20, or the electric heating layer 41 may be provided on both the inner surface and the outer surface of the optical cover 20; the electrical heating layer 41 may be a heating material formed on the surface of the optical housing 20 by a process such as coating, spin coating, screen printing, etching, or additive printing.

It should be noted that, the electric heating layer 41 can convert electric energy into heat energy, so as to heat the optical cover 20, thereby the temperature of the optical cover 20 can be raised, the light transmittance of the optical cover 20 caused by the condensed water mist or frost on the optical cover 20 can be avoided to be reduced, the light input is interfered, thereby the optical distortion is caused, thereby the problems such as the input error information and the system signal-to-noise ratio are reduced, thereby the optical sensing device can normally work under the special environments such as snowfall and low temperature, meanwhile, the electric heating layer 41 can transmit light, the requirement of the light transmittance of the optical cover 20 can be ensured, thereby the normal detection work of the optical sensing device can be ensured.

It should be noted that, in the related art, the optical cover 20 is heated by using a heating wire, or a heating material is plated on the surface of the substrate film, and after the heater is manufactured, the substrate film is adhered to the surface of the optical cover 20 by glue, the substrate film can greatly reduce the light transmittance of the optical cover 20 and is constrained by the shape of the surface of the substrate film, the adhesion strength of the substrate film on the arc surface of the optical cover 20 is poor, and the glue has poor weather resistance and reliability under a high-temperature and high-humidity environment, and the heater is easy to crack or fall off.

And in this application embodiment, attach electric heating layer 41 on optical cover 20, electric heating layer 41 and optical cover 20 direct contact compare in utilizing the heater wire to heat optical cover 20, and electric heating layer 41's heating efficiency is higher, and it is more even to heat to make optical cover 20's temperature promote more evenly.

It should be further noted that, compared with the case that the substrate film is adhered to the surface of the optical cover 20 by glue, in the present application, there is no substrate film between the electrical heating layer 41 and the optical cover 20, the attenuation of the substrate film to the light transmittance of the optical cover 20 is eliminated, the light transmittance of the optical cover 20 can be greatly improved, and the forming shape of the electrical heating layer 41 depends on the shape of the optical cover 20 and is not restricted by the shape of the substrate film surface, so that even if the surface of the optical cover 20 is an arc surface, the bonding strength of the electrical heating layer 41 on the arc surface of the optical cover 20 is still strong, meanwhile, the electrical heating layer 41 does not need to be bonded with the optical cover 20 by glue, but is attached to the surface of the optical cover 20 by the processes of coating, spin coating, silk-screen printing, etching or additive printing, etc., and the cracking or dropping of the electrical heating layer 41 caused by the poor weather resistance and reliability of the glue in the high-temperature and high-humidity environment can be avoided.

With continued reference to fig. 2, in some embodiments of the present application, the heating assembly 40 further includes a conductive member 42, and the conductive member 42 is fixed to the optical cover 20 and electrically connected to the electrical heating layer 41.

It is understood that the conductive member 42 can electrically connect the electric heating layer 41 to other components (such as a circuit board or a controller of the optical sensing apparatus), and the conductive member 42 cuts off the force transmission between the electric heating layer 41 and other components, so that when the other components electrically connected to the conductive member 42 are shaken or pulled, the electric heating layer 41 is not shaken or pulled, and thus the electric heating layer 41 can be prevented from being separated from the optical cover 20 when the other components are shaken or pulled.

The conductive component 42 may be formed on the optical cover 20 by insert molding. The insert molding is also called insert molding, and refers to a molding method in which a predetermined insert made of a different material is placed in a mold and then a resin is injected, and a molten resin material is joined to the insert and cured to form an integrated product, and the conductive member 42 is formed on the optical cover 20 by insert molding, and refers to a method in which the conductive member 42 is integrated with the optical cover 20 by insert molding, so that the connection strength and connection reliability of the conductive member 42 and the optical cover 20 can be greatly increased, and the conductive member 42 is prevented from falling off. The specific working principle and the specific working process of the insert injection molding process are disclosed in the related art for a long time, and the embodiment of the application is not described redundantly.

It should be noted that, according to actual requirements, the conductive member 42 may be fixed to the optical cover 20 by other methods, such as welding, gluing, riveting or screwing.

With continued reference to fig. 2, the heating assembly 40 may further include a conductive electrode 43, the conductive electrode 43 is electrically connected to the electric heating layer 41 and the conductive member 42, and the resistivity of the material of the conductive electrode 43 is smaller than that of the material of the electric heating layer 41.

The conductive electrode 43 may be made of a material with a relatively low resistivity, such as silver, copper, or gold. The electric connection between the electric heating layer 41 and the conductive part 42 is realized by utilizing the conductive electrode 43, the resistivity of the conductive electrode 43 is relatively low, the resistance and the resistance voltage drop between the conductive electrode 43 and the electric heating layer 41 can be greatly reduced, the voltage of any two positions on the electric heating layer 41, which are connected with the conductive electrode 43, is kept consistent, and the heating efficiency and the heating uniformity of the electric heating layer 41 are improved.

It should be noted that, the conductive electrode 43 may be formed by directly plating a conductive material on the surface of the optical cover 20 through a process such as plating, spin coating, screen printing or printing, and compared with the related art in which the conductive electrode 43 is plated on the surface of a substrate film, and then the substrate film is adhered on the surface of the optical cover 20 through glue, in the embodiment of the present application, the conductive electrode 43 is directly formed on the surface of the optical cover 20, so that attenuation of the substrate film on the light transmittance of the optical cover 20 is eliminated, and thus, the influence of the conductive electrode 43 on the light transmittance of the optical cover 20 can be reduced.

With continued reference to fig. 2, in particular, the conductive electrode 43 includes a first electrode 431, a second electrode 432, a first extension 433, and a second extension 434, wherein the first electrode 431 is electrically connected to the conductive member 42 through the first extension 433, and the second electrode 432 is electrically connected to the conductive member 42 through the second extension 434.

Wherein, the electric heating layer 41 includes a first side portion 411 and a second side portion 412 disposed oppositely, the first electrode 431 is located on the first side portion 411 and electrically connected to the first side portion 411, and the second electrode 432 is located on the second side portion 412 and electrically connected to the second side portion 412.

It can be understood that the first side portion 411 and the second side portion 412 are both edge portions of the electrical heating layer 41, and the first electrode 431 and the second electrode 432 are disposed close to the edge of the electrical heating layer 41, so that the light passing through the optical cover 20 can be prevented from being blocked by the first electrode 431 and the second electrode 432 to affect the normal operation of the optical sensor 30, and most of the electrical heating layer 41 can be heated, thereby improving the heating efficiency of the electrical heating layer 41.

Further, the length of the first electrode 431 is greater than or equal to that of the first side portion 411, and the length of the second electrode 432 is greater than or equal to that of the second side portion 412, so as to increase the contact area between the first electrode 431 and the second electrode 432 and the electric heating layer 41, thereby increasing the heatable portion of the electric heating layer 41 and improving the heating efficiency of the electric heating layer 41.

With continued reference to fig. 2, in an embodiment of the present application, the conductive electrode 43 may be adhered to the optical cover 20, the electric heating layer 41 and the conductive member 42, so as to improve the connection stability of the conductive electrode 43 and prevent the conductive electrode 43 from falling off while achieving the electric connection between the electric heating layer 41 and the conductive member 42 by using the conductive electrode 43.

With continued reference to fig. 2, in one embodiment of the present application, the heating assembly 40 further includes a circuit board 44, and one end of the circuit board 44 is soldered to the conductive member 42 to achieve electrical connection with the conductive member 42.

It is understood that the electric connection of the power supply and the like to the conductive member 42, and thus the electric connection of the power supply and the like to the electric heating layer 41, can be achieved by using the circuit board 44, and the connection strength and reliability between the circuit board 44 and the conductive member 42 can be ensured by connecting the circuit board 44 and the conductive member 42 by means of soldering.

Wherein, the circuit board 44 may be a Flexible Printed Circuit (FPC), a rigid Printed Circuit (PCB) or a Flexible Printed Circuit Board (FPCB); the circuit board 44 may be a single-sided board, a double-sided board, or a multi-layered board, and the embodiment of the present application does not specifically limit the type, model, size, and the like of the circuit board 44. The solder material may be a metal such as tin, silver, or copper, so that the solder joint of the circuit board 44 and the conductive member 42 has less resistance and better conductivity.

With continued reference to fig. 2, the conductive member 42 may include a first pad 421 and a second pad 422, the first pad 421 and the second pad 422 are disposed at an interval, the first electrode 431 is electrically connected to the first pad 421 through the first extension 433, the second electrode 432 is electrically connected to the second pad 422 through the second extension 434, and the first pad 421 and the second pad 422 are electrically connected to the circuit board 44.

As shown in fig. 3, in an embodiment of the present application, the optical cover 20 includes a main body 21 and an optical anti-reflection film 22.

Wherein, the main body 21 comprises a first side 211 and a second side 212, the first side 211 faces the accommodating cavity 11, and the second side 212 faces away from the accommodating cavity 11; optical antireflection film 22 is attached to first side 211 or/and second side 212 of body 21.

It can be understood that the optical antireflection film 22 may be attached only on the first side surface 211 or the second side surface 212, or the optical antireflection film 22 may be attached on both the first side surface 211 and the second side surface 212, and the optical antireflection film 22 may improve the light transmittance of the optical cover 20 to improve the intensity of light received by the optical sensor 30, so as to improve the optical information input amount of the optical sensing device, and thus is more beneficial to improving the identification accuracy, the identification success rate, the identification distance, and the like of the optical sensing device. The specific operation and composition of optical antireflection film 22 has been disclosed in the related art, and the embodiments of the present application are not described in detail.

Note that when the optical antireflection film 22 is attached to only one of the first side surface 211 and the second side surface 212, the electric heating layer 41 may be attached to only the other of the first side surface 211 and the second side surface 212, or the electric heating layer 41 may be attached to only the optical antireflection film 22, or the electric heating layer 41 may be attached to both the other of the first side surface 211 and the second side surface 212 and the optical antireflection film 22; when optical antireflection film 22 is attached to both first side 211 and second side 212, electrical heating layer 41 may be attached to only one optical antireflection film 22, or electrical heating layer 41 may be attached to both optical antireflection films 22.

It should be noted that when electrical heating layer 41 is attached to optical antireflection film 22, electrical heating layer 41 may be located on a side of optical antireflection film 22 away from main body 21, and of course, electrical heating layer 41 may also be located between optical antireflection film 22 and main body 21.

With continued reference to fig. 3, the main body 21 may include a main body portion 213 and a hardened portion 214, wherein the hardened portion 214 is formed by hardening the first side surface 211 or/and the second side surface 212 of the main body 21.

It should be noted that, by performing a hardening treatment on the surface of the main body 21 to form the hardened portion 214 on the surface of the main body 21, the hardened portion 214 can improve the surface wear resistance and the overall structural strength of the optical cover 20, and at the same time, the hardened portion 214 has an anti-reflection function, which can improve the light transmittance of the optical cover 20.

The main body 21 may be a plastic body. It will be appreciated that plastic has better impact resistance and cost advantages than glass, and can improve the impact resistance of the optical cover 20 and reduce the cost of the optical cover 20.

In an embodiment of the present application, the electrical heating layer 41 includes an Indium Tin Oxide (ITO) layer, and the ITO layer is a good transparent heating material, which can heat the optical cover 20, and at the same time, can reduce the influence on the light transmittance of the optical cover 20, thereby ensuring the normal detection operation of the optical sensing device.

It should be noted that the electric heating layer 41 may also include a nano silver wire layer, a metal mesh layer, a conductive ink layer, or a carbon nano bud layer.

It should be noted that the nano silver wire layer is formed on the optical cover 20 by spin coating, screen printing or printing, and the like, and the nano silver wire layer is also a good transparent conductive material; the metal grid layer is formed on the optical cover 20 by processes of spin coating, silk-screen printing, etching or additive printing and the like by utilizing a metal material, the metal grid layer is a hollow metal layer with a microstructure, light can penetrate through the hollow structure, so that normal detection work of the optical sensing device can be ensured, and the metal material can be copper, aluminum, silver, a copper alloy, an aluminum alloy, a silver alloy or other metals with high conductivity; the conductive ink layer is also a good light-transmitting conductive material, and can meet the heating and light-transmitting requirements of the optical cover 20; the carbon nanobud layer is a carbon nanobud film formed on the optical cover 20 by using a carbon nanobud technique, and the carbon nanobud film has good light transmittance and electrical conductivity.

With continued reference to fig. 3, in an embodiment of the present application, the optical sensing device further includes a controller 50, and the controller 50 is electrically connected to the optical sensor 30 and the electric heating layer 41.

It should be noted that the controller 50 may be a Micro Control Unit (MCU), and the controller 50 may determine whether undesirable phenomena such as water mist or frost occur on the optical cover 20 according to a feedback signal of the optical sensor 30, and control the electric heating layer 41 to heat the optical cover 20 when undesirable phenomena such as water mist or frost occur on the optical cover 20. For example, when frost occurs on the optical cover 20, the light transmittance of the optical cover 20 may be greatly reduced, which results in a reduction in the signal-to-noise ratio of the light signal received by the optical sensor 30, at which time the optical sensor 30 may transmit a feedback signal to the controller 50, the controller 50 may control the electric heating layer 41 to be turned on according to the feedback signal, the electric heating layer 41 heats the optical cover 20, and during the heating process of the electric heating layer 41, the controller 50 may also reduce the temperature of the electric heating layer 41 or stop the heating of the electric heating layer 41 according to an improvement in the light transmittance of the optical cover 20.

Wherein the controller 50 may be electrically connected with the optical sensor 30 and the electric heating layer 41 through a circuit board 44.

In the embodiment of the present application, when undesirable phenomena such as water mist or frost occur on the optical cover 20, the optical sensor 30 senses that the light transmittance of the optical cover 20 is greatly weakened, which results in a reduction of the signal-to-noise ratio of the optical signal received by the optical sensor 30, at this time, the optical sensor 30 can send a feedback signal to the controller 50, when the controller 50 determines that undesirable phenomena such as water mist or frost occur on the optical cover 20 according to the feedback signal of the optical sensor 30, the electrical heating layer 41 is controlled to heat the optical cover 20, the electrical heating layer 41 has higher heating efficiency and heating uniformity, so that the temperature of the optical cover 20 is uniformly raised, thereby preventing the problems that the light transmittance of the optical cover 20 is reduced due to the water mist or frost condensed on the optical cover 20, the light input is interfered, causing optical distortion, thereby inputting error information and reducing the signal-to-noise ratio of the system, and the like, meanwhile, the electrical heating layer 41 can transmit light, and the electrical heating layer 41 is in direct contact with the optical cover 20, there is no thin film between the electrical heating layer 41 and the optical cover 20, thereby eliminating the attenuation of the thin film to the light transmittance of the optical cover 20, and ensuring the normal detection of the optical sensing device.

Based on the optical sensing device, the embodiment of the present application further provides a vehicle, where the vehicle includes a vehicle body and the optical sensing device as described above, the optical sensing device is mounted on the vehicle body, and the vehicle may be of any specification and model, and the embodiment of the present application is not particularly limited.

The optical sensing device can be applied to an environment sensing system of a vehicle, and certainly, the optical sensing device can also be applied to an environment sensing system of equipment such as an unmanned aerial vehicle or a robot, so as to realize functions such as 3d (3 Dimensions) sensing and environment image sensing.

Of course, the optical sensing device can also be applied to an active suspension system of a vehicle, for example, in the active suspension system, the optical sensing device can send corresponding signals to an electronic control unit of the vehicle according to the height of the vehicle body, the vehicle speed, the steering angle, the speed, the brake and the like, the electronic control unit of the vehicle controls an actuating mechanism of the suspension, and parameters such as the rigidity of the suspension, the damping force of a shock absorber, the height of the vehicle body and the like are changed, so that the automobile has good riding comfort and operation stability. The optical sensing device can also be applied to systems such as a light control system, a vehicle speed measuring system, a driving control system and the like of a vehicle.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (14)

1. An optical sensing device, comprising:

a housing having an accommodation chamber and a light transmission window communicating with the accommodation chamber;

an optical cover disposed at the light transmission window;

the optical sensor is positioned in the accommodating cavity, and the light receiving surface of the optical sensor faces the optical cover so as to receive the light transmitted through the optical cover;

the heating assembly comprises a light-transmitting electric heating layer, and the electric heating layer is attached to the surface of the optical cover and is in contact with the optical cover.

2. The optical sensing device of claim 1, wherein the heating assembly further comprises:

and the conductive component is fixed on the optical cover and is electrically connected with the electric heating layer.

3. The optical sensing device of claim 2, wherein the conductive component is insert molded on the optical cover.

4. The optical sensing device of claim 2, wherein the heating assembly further comprises:

and the conductive electrode is electrically connected with the electric heating layer and the conductive part, and the resistivity of the preparation material of the conductive electrode is smaller than that of the preparation material of the electric heating layer.

5. The optical sensing device according to claim 4, wherein the conductive electrode comprises a first electrode, a second electrode, a first extension, and a second extension, the first electrode being electrically connected to the conductive member through the first extension, the second electrode being electrically connected to the conductive member through the second extension;

the electric heating layer comprises a first side edge part and a second side edge part which are oppositely arranged, the first electrode is located on the first side edge part and electrically connected with the first side edge part, and the second electrode is located on the second side edge part and electrically connected with the second side edge part.

6. The optical sensing device of claim 5, wherein the first electrode has a length greater than or equal to a length of the first side portion, and the second electrode has a length greater than or equal to a length of the second side portion.

7. The optical sensing device of claim 4, wherein the electrically conductive electrode is adhered to the optical cover, the electrical heating layer, and the electrically conductive member.

8. The optical sensing device of any one of claims 2 to 7, wherein the heating assembly further comprises:

and a circuit board having one end soldered to the conductive member to achieve electrical connection with the conductive member.

9. The optical sensing device of any one of claims 1 to 7, wherein the optical enclosure comprises:

the main body comprises a first side surface and a second side surface, the first side surface faces the accommodating cavity, and the second side surface is far away from the accommodating cavity;

and the optical antireflection film is attached to the first side surface or/and the second side surface of the main body.

10. The optical sensing device of claim 9, wherein the body comprises a body portion and a hardened portion formed by hardening the first side or/and the second side of the body.

11. The optical sensing device of claim 9, wherein the body is a plastic body.

12. The optical sensing device of any one of claims 1 to 7, wherein the electrical heating layer comprises a layer of indium tin oxide, a layer of nano-silver wires, a layer of metal mesh, a layer of conductive ink, or a layer of carbon nano-sprouts.

13. The optical sensing device of any one of claims 1 to 7, further comprising a controller electrically connected to the optical sensor and the electrical heating layer.

14. A vehicle comprising a vehicle body and an optical sensing device according to any one of claims 1 to 13 mounted on the vehicle body.

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