CN107340550B

CN107340550B - Multifunctional sensor

Info

Publication number: CN107340550B
Application number: CN201710673737.3A
Authority: CN
Inventors: 陆鹏; 王宇锋; 韩瑜
Original assignee: Jiangsu Riying Electronics Co ltd
Current assignee: Jiangsu Riying Electronics Co ltd
Priority date: 2017-08-09
Filing date: 2017-08-09
Publication date: 2023-09-12
Anticipated expiration: 2037-08-09
Also published as: CN107340550A

Abstract

The invention relates to the technical field of vehicle control devices, in particular to a multifunctional sensor, which enables a rainfall sensor, a sunlight sensor, a light sensor and a temperature and humidity sensor to be integrated in one sensor through the position arrangement and the optical arrangement of a sensing assembly, has extremely high sensitivity, improves the durable comfort of the temperature in a vehicle, has smaller structural size and is convenient to install and debug.

Description

Multifunctional sensor

Technical Field

The invention relates to the technical field of vehicle control devices, in particular to a multifunctional sensor.

Background

Along with continuous intellectualization of vehicles, rainfall control, air conditioning system control and headlamp control of vehicles are all developed towards automation and intellectualization. Different sensing modules are required to be correspondingly arranged for different control functions, and a rainfall sensor, a sunlight sensor and a light sensor are installed on a vehicle respectively in the prior art. The addition of the sensor brings inconvenience to installation and debugging on one hand; on the other hand, each sensor is large in size, and certain installation space is necessarily occupied, so that the design of the vehicle is plagued.

Disclosure of Invention

The invention aims to solve the technical problems that: the invention provides a multifunctional sensor, which aims to overcome the defect that the existing vehicle sensor is large in size and cannot be integrated.

The technical scheme adopted for solving the technical problems is as follows: the multifunctional sensor comprises a circuit board and a sensor body, wherein the sensor body comprises a sensing assembly, the sensing assembly comprises a rainfall sensing assembly and a sunlight sensing assembly, and the circuit board is provided with a rainfall light sensing element and a sunlight light sensing element which respectively correspond to the rainfall sensing assembly and the sunlight sensing assembly; the rainfall sensing assembly comprises a rainfall optical lens group, wherein the rainfall optical lens group comprises a receiving lens and a plurality of transmitting lenses arranged around the receiving lens, and the transmitting lenses are used for transmitting light rays into the receiving lens after total reflection and refraction of the light rays; the solar sensing assembly includes a solar optical lens positioned within an enclosure of an emitter lens of the rain sensing assembly. The design of the invention leads the light rays of the emitting lens to form total reflection and refraction, thereby leading more light rays to form total reflection on the inner surface of the windshield and then be received by the central receiving tube, and the design of the receiving lens is to converge more total reflection light rays to the central receiving tube, thereby increasing the area sensitive to raindrops.

All the emitting lenses are uniformly distributed in a circumferential array around the receiving lenses, the emitting lenses are positioned at the center of the circumferential array, and the sunlight optical lenses are positioned on a radius of the circumference.

The multifunctional sensor further comprises a light sensing component for sensing light in front of and above the vehicle, and part or all of the light sensing component is located in the surrounding of the emergent lens of the rainfall sensing component.

The light sensing assembly comprises a front light assembly and an upper light assembly, the front light assembly comprises a front light lens, the upper surface of the front light lens is a plane, the lower surface of the front light lens is a special-shaped surface, the special-shaped surface consists of a cambered surface of the special-shaped surface and an inclined surface of the special-shaped surface, the cambered surface of the special-shaped surface is connected with the inclined surface of the special-shaped surface, and the cambered surface of the special-shaped surface is larger than the inclined surface of the special-shaped surface; the upper light assembly comprises an upper light lens, the upper surface of the upper light lens is a plane, the lower surface of the upper light lens is a wavy free-form surface formed by a plurality of strip structures side by side, and the front light lens and the upper light lens are mutually close to each other and mutually shield light through a stop block. The invention can receive wider upper light through the wavy free curved lens structure formed by a plurality of strip structures side by side, the specific received light range is that the windshield of the automobile is taken as a horizontal reference surface, the forward running direction of the automobile is the front-back direction, the receiving angle A in the horizontal direction is in the range of-47 degrees to +47 degrees, the plane where A is vertical to the horizontal reference surface and is vertical to the front-back direction, the receiving angle B in the vertical direction is in the range of 23 degrees to 93 degrees, and the plane where B is vertical to the horizontal reference surface and is parallel to the front-back direction. Therefore, the change of light can be received in advance before the automobile enters the environment with the change of light, and if the automobile enters the darker environment, the headlight can be started in advance, so that a driver can see the front Fang Lukuang clearly, and traffic accidents are avoided. The design ensures that the rotating curved surface plays a role of light convergence, the rotating base line of the rotating curved surface is changed to enable the receiving tube to receive light rays with a specific angle, the specific received light ray range is that the windshield of the automobile is used as a horizontal base plane, the forward running direction of the automobile is the front-back direction, the receiving angle C range in the horizontal direction is-10 degrees to +10 degrees, the plane where C is located is vertical to the horizontal base plane and vertical to the front-back direction, the receiving angle D range in the vertical direction is 15 degrees to 15 degrees, and the plane where D is located is vertical to the horizontal base plane and parallel to the front-back direction.

The upper surface refers to a light incident surface, and the lower surface refers to a light emergent surface.

The inclined plane of the special-shaped surface is close to the upper light lens, and two ends of the strip-shaped structure of the upper light lens extend along the connecting line direction of the front light lens and the upper light lens. The front light lens is used for collecting light in front of the vehicle, the upper light lens is used for collecting ambient light of the vehicle, after the front light lens and the upper light lens are mutually close to each other, the plane of the special-shaped surface is close to the upper light lens, and the inclined plane angle of the special-shaped surface is just suitable, so that the light in front of the vehicle is injected.

The arc surface of the special-shaped surface and the inclined surface of the special-shaped surface are connected to form a connecting line, and the connecting line is an arc line.

In order to make the light rays in other areas in front of the vehicle be refracted out by the cambered surface of the special-shaped surface as much as possible, the radian of the cambered surface is smaller than 180 degrees.

Preferably, the cross section of the strip-shaped structure of the lower surface of the upper optical lens is 6 free curves similar to a semicircle.

The sunlight ray sensing element comprises a front light receiving tube and an upper light receiving tube, wherein the front light receiving tube and the upper light receiving tube are photodiodes, and the photodiodes convert optical signals into electric signals.

The multifunctional sensor further comprises a temperature and humidity sensing assembly for sensing the temperature and humidity inside the vehicle, and the temperature and humidity sensing assembly is located outside the surrounding of the emergent lens of the rainfall sensing assembly.

The rainfall light sensing element comprises a rainfall light receiving tube, the rainfall light emitting tube emits rainfall light to the emitting lens, and the rainfall light is refracted by the emitting lens and then totally reflected on the inner surface of the windshield; the emergent light of the transmitting lens is emitted into the receiving lens after being totally reflected by the windshield, the receiving lens converges the light to the rainfall light receiving tube, and the transmitting lens circumferential array and the receiving lens are designed to converge more total reflection and refraction light to the light receiving tube, so that the area sensitive to raindrops is increased, the raindrop sensing area is greatly increased, and the accuracy of the rainfall sensor is improved.

Further, the specific structure in which total reflection and refraction occur is: the upper surface of emission lens is the plane, and the lower surface has the recess, and the recess includes left side wall, right side wall, inside wall and lateral wall, and left side wall and right side wall set up relatively, and inside wall and lateral wall set up relatively, and the one side of inside wall towards the lateral wall has the circular arc convex part to the lateral wall evagination, and the one side of lateral wall towards the inside wall is the concave arc surface, be the refraction to the rainfall light on the arc surface of circular arc convex part, be total reflection to the rainfall light on the arc surface of indent, receive lens upper surface is the plane, and the lower surface has the indent.

In order to gather more to the light receiving tube, the area of receiving lens total reflection is greater than the refracting area, the circle that the circular arc of circular arc convex part is located is circle A, the circle that the circular arc of indent cambered surface is located is circle B, circle A and circle B's centre of a circle are on same straight line, and circle B is closer to receiving lens than circle A.

The sunlight ray sensing element comprises a sunlight ray receiving tube, one sunlight optical lens is provided with at least one group of optical surfaces, each group of optical surfaces comprises an incident surface, a total reflection surface and an emergent surface, and one group of optical surfaces is correspondingly provided with the sunlight ray receiving tube; the external light rays are emitted into the optical lens from the incident surface and then emitted to the total reflection surface, total reflection occurs on the total reflection surface, and the external light rays after total reflection are emitted to the emergent surface in the optical lens and are emitted to the sunlight light ray receiving tubes corresponding to the group of optical surfaces from the emergent surface.

One optical lens is provided with two groups of optical surfaces, one optical lens is correspondingly provided with two sunlight ray receiving pipes, each sunlight ray receiving pipe corresponds to one group of optical surfaces of the optical lens, the two groups of optical surfaces are symmetrically arranged, the two sunlight ray receiving pipes are symmetrically arranged, and the distance D between the two sunlight ray receiving pipes is less than or equal to 8mm. Using the side wall of the optical lens to generate total reflection, so that left positive light is incident into the right lens and irradiates to the optical surface on the right side; the right sunlight irradiates into the left lens and irradiates to the left optical surface, and then is received by the photosensitive diode at the corresponding position, so that the collection angle of the sunlight is improved. After the design of the invention is adopted, the distance D between the two sunlight ray receiving pipes can be reduced while the larger light collecting angle is ensured, the distance D between the two sunlight ray receiving pipes is less than or equal to 8mm, and the size of the product is greatly reduced. The two groups of optical surfaces and the two sunlight ray receiving tubes are arranged to form the double-drive sensor, so that the sunlight intensity of the main driving position and the auxiliary driving position can be sensed simultaneously, the opening and closing of the air conditioner and the air quantity can be regulated, and the main driving position and the auxiliary driving position can be satisfied and simultaneously a more ideal comfortable state can be achieved.

The multifunctional sensor further comprises a rear cover and a protective cover, wherein the rear cover is pure black, and the protective cover is made of transparent materials.

A silica gel layer is arranged between the inductor body and the protective cover, and the silica gel layer covers the inductor body.

The sensor body further comprises a shell, the sensing component is arranged between the shell and the rear cover, and the shell is pure black.

The multifunctional sensor has the beneficial effects that the rainfall sensor, the sunlight sensor, the light sensor and the temperature and humidity sensor can be integrated in one sensor through the position arrangement and the optical arrangement of the sensing assembly, the sensitivity is extremely high, the durable comfort of the temperature in the vehicle is improved, the structural size is smaller, and the installation and the debugging are convenient.

Drawings

The invention will be further described with reference to the drawings and examples.

Fig. 1 is an exploded view of a multifunctional sensor of the present invention.

Fig. 2 is a schematic structural view of a sensor body of the multifunctional sensor of the present invention.

Fig. 3 is a schematic view showing a structure of an upper surface of the rain sensor assembly according to the present invention.

Fig. 4 is a schematic view showing a structure of a lower surface of the rain sensor assembly according to the present invention.

Fig. 5 is an optical schematic of the rain sensor assembly of the present invention.

Fig. 6 is a schematic view of the structure of the solar optical lens of the present invention.

Fig. 7 is a front view of a solar optical lens of the present invention.

Fig. 8 is an optical schematic of the solar optical lens of the present invention.

Fig. 9 is a graph of different angular light sensitivity profiles (co-pilot direction) of the sun sensing assembly of the present invention.

Fig. 10 is a graph of the positional relationship of the sun sensing assembly and the sun of the present invention.

Fig. 11 is a schematic structural view of a front light assembly and an upper light assembly in the light sensing assembly of the present invention.

Fig. 12 is a schematic structural view of a front light assembly and an upper light assembly in the light sensing assembly of the present invention.

Fig. 13 is a schematic diagram of the operation of the upper light assembly in the light sensing assembly of the present invention.

Fig. 14 is a schematic diagram of the operation of the front light assembly in the light sensing assembly of the present invention.

In the figure: 100. the rain sensor assembly, 1-1, rain, 101, receiving lens, 1011, concave portion, 102, transmitting lens, 1021, groove, 103, rain receiving tube, 104, rain transmitting tube, 200, sunlight sensor assembly, 201, sunlight optical lens, 2011, incident face, 2012, total reflection face, 2013, exit face, 20211, inner side wall, 202111, circular arc convex portion, 20212, outer side wall, 202121, concave circular arc face, 203, sunlight receiving tube, 204, left sunlight, 205, lower convex portion, 300, light sensing assembly, 301, front light lens, 302, special-shaped face, 3021, arc face of special-shaped face, 3022, inclined face of special-shaped face, 3023, connecting wire, 303, upper light lens, 3031, wavy free-form face, 304, stopper, 305, upper light receiving tube, 306, front light receiving tube, 5, windshield, 6, gel, 8, front light, 9, ambient light, 10, circuit board, 11, sensor body, 12, rear cover body, 13, 14, adhesive layer, housing, 15.

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.

As shown in fig. 1 and 2, a multifunctional sensor includes a circuit board and a sensor body, wherein the sensor body includes a sensing assembly including a rainfall sensing assembly 100 and a sunlight sensing assembly 200, and the circuit board has a rainfall light sensing element and a sunlight light sensing element corresponding to the rainfall sensing assembly 100 and the sunlight sensing assembly 200, respectively. The rainfall sensing assembly 100 comprises a rainfall optical lens group, wherein the rainfall optical lens group comprises a receiving lens 101 and a plurality of transmitting lenses 102 which are arranged around the receiving lens 101, and the transmitting lenses 102 are used for forming total reflection and refraction on light rays 1-1 and then transmitting the rainfall light rays 1-1 into the receiving lens 101;

the solar sensing assembly 200 includes a solar optical lens 201, the solar optical lens 201 being located within the envelope of the emitter lens 102 of the rain sensing assembly 100.

The emitting lenses 102 are uniformly distributed around the receiving lens 101 in a circumferential array, the emitting lenses 102 are positioned at the center of the circumferential array, and the sunlight optical lenses 201 are positioned on a radius of the circumference.

The multifunction sensor further includes a light sensing assembly 300 for sensing light in front of and above the vehicle, with part or all of the light sensing assembly 300 being located within the envelope of the exit lens 102 of the rain sensing assembly 100.

The multifunctional sensor further comprises a temperature and humidity sensing component for sensing the temperature and humidity inside the vehicle, and the temperature and humidity sensing component is located outside the surrounding of the emergent lens 102 of the rainfall sensing component 100.

As shown in fig. 3-5, the specific implementation of the rainfall sensing is:

the rainfall light sensing element comprises a rainfall light receiving pipe 103, the rainfall optical lens group comprises a receiving lens 101 and a plurality of transmitting lenses 102 which are arranged around the receiving lens 101, the transmitting lenses 102 are used for forming total reflection and refraction on rainfall light 1-1 and then transmitting the rainfall light 1-1 into the receiving lens 101, the rainfall light transmitting pipe 104 is used for transmitting the rainfall light 1-1 to the transmitting lenses 102, and the rainfall light 1-1 is subjected to total reflection on the inner surface of the windshield after being refracted by the transmitting lenses 102; the emergent light of the emission lenses 102 is totally reflected by the windshield and then enters the receiving lenses 101, the receiving lenses 101 collect the light to the rainfall light receiving tubes 103, each emission lens 102 is correspondingly provided with one rainfall light emitting tube 104, all the emission lenses 102 are uniformly distributed in a circumferential array around the collecting lenses, the receiving lenses 101 are positioned at the center of the circumferential array, and the rainfall light receiving tubes 103 are positioned on the central axis of the circumferential array. In this embodiment, the rain optical lens group includes six emission lenses 102. The rain light emitting tube 104 is an LED.

The upper surface of the emission lens 102 is a plane, the lower surface is provided with a groove 1021, the groove 1021 comprises a left side wall, a right side wall, an inner side wall 20211 and an outer side wall 20212, the left side wall and the right side wall are oppositely arranged, the inner side wall 20211 and the outer side wall 20212 are oppositely arranged, an arc convex portion 202111 is outwards protruded from one surface of the inner side wall 20211, which faces the outer side wall 20212, an inwards concave arc surface 202121 is formed on one surface of the outer side wall 20212, the arc surface of the arc convex portion 202111 is used for refracting rainfall light rays 1-1, the inwards concave arc surface 202121 is used for totally reflecting the rainfall light rays 1-1, the upper surface of the receiving lens 101 is a plane, and the lower surface is provided with an inwards concave portion 1011.

The circle in which the arc of the arc convex portion 202111 is located is a circle a, the circle in which the arc of the concave arc surface 202121 is located is a circle B, the centers of the circle a and the circle B are on the same straight line, and the circle B is closer to the receiving lens 101 than the circle a.

In order to fix the multifunctional sensor on the surface of the windshield 5, in order to fix the rainfall sensor on the surface of the windshield 5, a gel 6 is arranged between the upper surface of the optical lens group and the windshield 5, and the rainfall light ray 1-1 is totally reflected on the inner surface of the windshield 5 after passing through the rainfall optical lens group and the gel 6. The rain sensor optical module is made of a material which can only transmit infrared rays.

The six rainfall light emitting tubes 104 emit light, are respectively refracted and totally reflected by the six emitting lenses 102, reach the inner surface of the windshield 5, then totally reflected, and are converged to the central light receiving tube 103 through the central receiving lens 101. Six emission lenses 102 are identical in structure and enclose a circumferential array. The design of each emission lens 102 structure enables more rain light 1-1 to form total reflection on the inner surface of the windshield 5 and be received by the rain light receiving tube 103, and the design of the circumferential array of the emission lenses 102 and the receiving lens 101 is that more total reflection rain light 1-1 is converged to the rain light receiving tube 103, so that the area of a region sensitive to rain drops is increased, the rain drop sensing area is greatly increased, and the accuracy of the rain sensor is improved.

As shown in fig. 6-9, the sunlight sensing embodiments are:

the sunlight sensing element comprises a sunlight receiving tube 203, one sunlight optical lens 201 is provided with at least one group of optical surfaces, each group of optical surfaces comprises an incident surface 2011, a total reflection surface 2012 and an emergent surface 2013, and one group of optical surfaces is correspondingly provided with one sunlight receiving tube 203; the external light enters the optical lens 201 from the incident surface 2011, then is directed to the total reflection surface 2012, and is totally reflected on the total reflection surface 2012, and the totally reflected external light enters the outgoing surface 2013 in the sunlight optical lens 201, and is outgoing from the outgoing surface 2013 to the sunlight light receiving tube 203 corresponding to the group of optical surfaces. One optical lens 201 has two sets of optical surfaces, and one optical lens 201 is provided with two sunlight receiving tubes 203 corresponding to each other, and in order to simultaneously sense the sunlight intensity of the main and auxiliary seats of the vehicle, two sets of optical surfaces are provided, one of which senses the sunlight intensity of the main seat and the other of which senses the sunlight intensity of the auxiliary seat. Each sunlight ray receiving tube 203 corresponds to one group of optical surfaces of the sunlight optical lens 201, the two groups of optical surfaces are symmetrically arranged, the two sunlight ray receiving tubes 203 are symmetrically arranged, the distance D between the two sunlight ray receiving tubes 203 can be reduced while the larger light ray collecting angle is ensured, the distance D between the two sunlight ray receiving tubes 203 is less than or equal to 8mm, and the size of a product is greatly reduced.

For ease of control, the two sets of optical surfaces are symmetrically disposed and the two solar light receiving tubes 203 are symmetrically disposed (i.e., left-right symmetrically designed). The left incidence surface and the right incidence surface form the same plane, the left total reflection surface is positioned below the left incidence surface and is vertical to the outer edge of the left incidence surface, the right total reflection surface is positioned below the right incidence surface and is vertical to the outer edge of the right incidence surface, the left emergence surface is positioned below the left incidence surface and gradually inclines upwards slightly from left to right, the right emergence surface is positioned below the right incidence surface and gradually inclines upwards slightly from right to left, if the plane (not inclined), total reflection is formed on the non-inclined plane, so that sunlight rays cannot be received by the receiver, and the inclination angle range is 0-30 degrees. Sunlight receiving tubes 203 are respectively arranged below the left outgoing surface and the right outgoing surface. A lower protrusion 205 between the left and right exit faces for assembly.

The solar optical lens 201 is made of PC. The solar light receiving tube 203 is a photodiode. The photodiodes convert the optical signals into electrical signals. Of course, the solar light receiving tube 203 may also have other photoelectric conversion devices.

As shown in fig. 8, the principle of total reflection of the side wall of the solar optical lens 201 (light passes through the dense medium to the sparse medium, and total reflection occurs when the light is greater than the critical angle) is mainly utilized, so that the left solar light ray 204 enters the right lens and irradiates the right optical surface; the right light rays are irradiated into the left lens and irradiate the optical surface on the left side, so that the collection angle of the light rays is improved. As shown in fig. 8, the left sunlight ray 204 enters the right lens, is totally reflected at the side wall (right total reflection surface) of the right lens, and is refracted out through the right exit surface, and is received by the photodiode at the corresponding position.

The invention adopts one sunlight optical lens 201 corresponding to two sunlight light receiving tubes 203, becomes a double-drive sensor, and can simultaneously sense the sunlight intensity of the main driving position and the auxiliary driving position so as to adjust the opening and closing and the air quantity of the air conditioner, thereby meeting the requirements of the main driving position and the auxiliary driving position and simultaneously achieving a more ideal comfortable state.

As shown in fig. 9, 0 °,45 °,90 ° are marked in fig. 9, and are shown in fig. 10The angle, i.e. the rotation angle of the sun, the abscissa in fig. 9 is the angle θ in fig. 10, i.e. the elevation angle of the sun, and the ordinate is the sensitivity of the sensor. Fig. 9 illustrates the sensitivity of different elevation position sensors at 3 different angles of rotation. The product has higher light sensitivity. In fig. 10, the positive Y-axis direction is the vehicle running direction, and the origin is the center position of the sunlight sensing assembly.

As shown in fig. 11-14, the light sensing embodiments are:

the light sensing assembly comprises a front light assembly and an upper light assembly, the front light assembly comprises a front light lens 301, the upper surface of the front light lens 301 is a plane, the lower surface of the front light lens 301 is a special-shaped surface 302, the special-shaped surface 302 is composed of a cambered surface 3021 of the special-shaped surface and a bevel 3022 of the special-shaped surface, the cambered surface 3021 of the special-shaped surface is connected with the bevel 3022 of the special-shaped surface, and the cambered surface 3021 of the special-shaped surface is larger than the bevel 3022 of the special-shaped surface; the upper optical assembly includes an upper optical lens 303, the upper surface of the upper optical lens 303 is a plane, the lower surface is a plurality of wavy free curved surfaces 3031 formed by strip structures side by side, and the front optical lens 301 and the upper optical lens 303 are arranged close to each other and mutually shield light through a stop block 304.

The inclined surface 3022 of the irregular surface is adjacent to the upper optical lens 303, and both ends of the stripe structure of the upper optical lens 303 extend in the direction of the line connecting the front optical lens 301 and the upper optical lens 303.

The connection line 3023 is formed at the connection point of the cambered surface 3021 of the special-shaped surface and the inclined surface 3022 of the special-shaped surface, and the connection line 3023 is an arc line. The radian of the arc is less than 180 degrees. The cross section of the bar-like structure of the lower surface of the upper optical lens 303 is six free curves resembling a semicircle.

As shown in fig. 11, the lower surface of the upper light lens 303 is a wavy free-form surface 3031 formed by a plurality of strip structures side by side, so that more external light can be detected, so that the light entering the upper light receiving tube 305 has a larger incident angle and range, and the upper light receiving tube 305 collects the actual ambient light 9, thereby avoiding erroneous judgment caused by non-local light. Fig. 13 shows a horizontal cross section of the upper lens 303, the gel 6 and the windshield 5 of the vehicle, and other components are omitted in order to clearly show the working principle. The upper surface of the upper optical lens 303 is a plane (light incident surface), and the lower surface is a wavy free-form surface 3031, and the design similar to a convex lens can increase the light angle in the horizontal direction. Through the upper light lens 303, the photodiode can receive a wider range of light above the vehicle when the sensor is attached to the inside of the windshield 5. Changing the radian and number of small semi-circles like on the wavy free-form surface 3031 can change the receiving angle in the horizontal direction.

Fig. 14 shows a vertical section through the front lens 301, the gel 6 and the windshield 5 of the vehicle, and other components are omitted for clarity of illustration. As shown in fig. 2, the windshield 5 makes an angle of 30 ° with the horizontal. The gel 6 is used to attach the sensor to the windscreen 5. The front light receiving tube 306 can receive a smaller range of light directly in front of the vehicle while avoiding interference with other direction light. The refractive index of the gel 6 is the same as that of the front lens 301 and the windshield 5. The front light 8 propagates through the windshield 5, the gel 6, and the front light lens 301 in a straight line, and is refracted when contacting air, and is finally received by the photodiode. Due to the optical design of the front lens 301, the curved surface 3021 of the shaped surface is capable of refracting light that is not directly in front of it, and the inclined surface 3022 of the shaped surface is capable of directly injecting light that is directly in front of it. This design allows only light in front of the vehicle to be injected into the front light receiving tube 306, avoiding interference with light in other areas.

The inclined surface 3022 of the irregular surface is adjacent to the upper optical lens 303, and both ends of the stripe structure of the upper optical lens 303 extend in the direction along the line connecting the front optical lens 301 and the upper optical lens 303. The front light lens 301 collects the vehicle front light 8, the upper light lens 303 collects the vehicle environment light 9, after the front light lens 301 and the upper light lens 303 are arranged close to each other, the inclined plane 3022 of the special-shaped surface is close to the upper light lens 303, and the angle of the inclined plane 3022 of the special-shaped surface is just suitable, so that the vehicle front light 8 is injected. The connection line 3023 is formed at the connection point of the cambered surface 3021 of the special-shaped surface and the inclined surface 3022 of the special-shaped surface, and the connection line 3023 is an arc line. In order to make the light rays in other areas in front of the vehicle be refracted out by the cambered surface 3021 of the special-shaped surface as much as possible, the radian of the cambered surface is smaller than 180 degrees.

Preferably, in fig. 11, the cross section of the stripe structure of the lower surface of the upper optical lens 303 is composed of six free curves like semicircle.

The light sensor of the invention collects external light to the upper light receiving tube 305 through the upper light lens 303 to judge the running environment light 9 of the vehicle, and collects the front light 8 to the front light receiving tube 306 through the front light lens 301 to judge whether to turn on or off the vehicle lamp; and meanwhile, the ambient light 9 and the front light 8 are combined, so that the judgment is more accurate. The lower surface of the upper light lens 303 is a wavy free curved surface 3031 formed by a plurality of strip structures side by side, so that more external light rays can be detected, the light rays entering the upper light receiving tube 305 have larger incidence angles and ranges, the upper light receiving tube 305 can collect actual ambient light rays 9, and erroneous judgment caused by non-local light rays is avoided. In the front lens 301, the curved surface 3021 of the irregular surface can refract light that is not directly in front of the lens, and the inclined surface 3022 of the irregular surface allows light that is directly in front of the lens to be incident. This design allows only the front light 8 of the vehicle to be injected into the front light receiving tube 306, avoiding interference with other area light.

The multifunctional sensor is arranged on the inner surface of a vehicle windshield, light emitting tubes used in rainfall sensing, sunlight sensing and light sensing are all LED light emitting diodes, light receiving tubes are all photodiodes, and the photodiodes convert light signals into electric signals. Of course, the light receiving tube may also have other photoelectric conversion devices.

The multifunctional sensor of the present invention further comprises a rear cover 12 and a protective cover 13. The rear cover 12 is used for packaging the sensor and protecting relevant components of the sensor, and has a pure black color, thereby playing a role in shielding external interference light. The protective cover 13 protects the entire sensor, which is made of transparent material, ensuring that external light can enter the corresponding sensor receiving position. A silica gel layer 14 is arranged between the inductor body 11 and the protective cover 13, and the silica gel layer 14 covers the inductor body 11 to protect components. The inductor body 11 further comprises a shell 15, the sensing component is arranged between the shell 15 and the rear cover, and the shell 15 is pure black and plays a role in shielding external interference light.

The rear cover 12 is also provided with a spring piece for assembling the multifunctional sensor of the present invention at a corresponding position of the automobile.

With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.

Claims

1. A multifunctional sensor, characterized in that: the solar energy sensor comprises a circuit board and a sensor body, wherein the sensor body comprises a sensing assembly, the sensing assembly comprises a rainfall sensing assembly (100) and a sunlight sensing assembly (200), and a rainfall light sensing element and a sunlight light sensing element which respectively correspond to the rainfall sensing assembly (100) and the sunlight sensing assembly (200) are arranged on the circuit board;

the rainfall sensing assembly (100) comprises a rainfall optical lens group, wherein the rainfall optical lens group comprises a receiving lens (101) and a plurality of transmitting lenses (102) arranged around the receiving lens (101), and the transmitting lenses (102) are used for forming total reflection and refraction on rainfall light rays (1-1) and then injecting the rainfall light rays (1-1) into the receiving lens (101);

the sunlight sensing assembly (200) comprises a sunlight optical lens (201), the sunlight optical lens (201) being located within an enclosure of an emitter lens (102) of the rain sensing assembly (100);

the rain sensor further comprises a light sensing assembly (300) for sensing front light and upper light of the vehicle, wherein part or all of the light sensing assembly (300) is positioned in the surrounding of the emergent lens (102) of the rain sensing assembly (100);

the light sensing assembly (300) comprises a front light assembly and an upper light assembly, the front light assembly comprises a front light lens (301), the upper surface of the front light lens (301) is a plane, the lower surface of the front light lens is a special-shaped surface (302), the special-shaped surface (302) is composed of a cambered surface (3021) of the special-shaped surface and an inclined surface (3022) of the special-shaped surface, the cambered surface (3021) of the special-shaped surface is connected with the inclined surface (3022) of the special-shaped surface, and the cambered surface (3021) of the special-shaped surface is larger than the inclined surface (3022) of the special-shaped surface; the upper light assembly comprises an upper light lens (303), the upper surface of the upper light lens (303) is a plane, the lower surface of the upper light lens is a wavy free-form surface (3031) formed by a plurality of strip structures side by side, and the front light lens (301) and the upper light lens (303) are arranged close to each other and mutually shield light rays through a stop block (304);

the curved surface (3021) of the irregular surface can refract light that is not directly ahead, and the inclined surface (3022) of the irregular surface directly injects light that is directly ahead.

2. The multi-function sensor of claim 1, wherein: all the emitting lenses (102) are uniformly distributed in a circumferential array around the receiving lenses (101), the emitting lenses (102) are positioned at the center of the circumferential array, and the sunlight optical lenses (201) are positioned on a radius of the circumference.

3. The multi-function sensor of claim 1, wherein: the inclined plane (3022) of the special-shaped surface is close to the upper optical lens (303), and two ends of the strip-shaped structure of the upper optical lens (303) extend along the connecting line direction of the front optical lens (301) and the upper optical lens (303).

4. The light sensor of claim 1, wherein: a connecting line (3023) is formed at the joint of the cambered surface (3021) of the special-shaped surface and the inclined surface (3022) of the special-shaped surface, and the connecting line (3023) is an arc line.

5. The light sensor of claim 4, wherein: the radian of the arc is less than 180 degrees.

6. The light sensor of claim 1, wherein: the sunlight ray sensing element comprises a front light receiving tube (306) and an upper light receiving tube (305), wherein the front light receiving tube (306) and the upper light receiving tube (305) are photodiodes.

7. The multi-function sensor of claim 1, wherein: the temperature and humidity sensing assembly is used for sensing the temperature and humidity inside the vehicle and is located outside the surrounding of the emergent lens (102) of the rainfall sensing assembly (100).

8. The multi-function sensor of claim 1, wherein: the rainfall light sensing element comprises a rainfall light receiving tube (103), the rainfall light emitting tube (103) emits rainfall light (1-1) to the emitting lens (102), and the rainfall light (1-1) is refracted by the emitting lens (102) and then totally reflected on the inner surface of the windshield; the emergent light (1-1) of the transmitting lens (102) is totally reflected by the windshield and then enters the receiving lens (101), the receiving lens (101) gathers the rainfall light (1-1) to the rainfall light receiving tube (103),

the upper surface of emission lens (102) is the plane, and the lower surface has recess (1021), and recess (1021) include left side wall, right side wall, inside wall (20211) and lateral wall (20212), and left side wall and right side wall set up relatively, and inside wall (20211) and lateral wall (20212) set up relatively, and the one side of inside wall (20211) towards lateral wall (20212) has circular arc convex part (202111) to outside wall (20212) evagination, and the one side of outside wall (20212) towards inside wall (20211) is concave arc surface (202121), be refracting to rainfall light (1-1) on the arc surface of circular arc convex part (202111), be total reflection to rainfall light (1-1) on the arc surface (202121) of indent, the upper surface of receiving lens (101) is the plane, and the lower surface has concave part (1011).

9. The multi-function sensor of claim 8, wherein: the circle of the arc convex part (202111) is a circle A, the circle of the arc of the concave arc surface (202121) is a circle B, the centers of the circle A and the circle B are on the same straight line, and the circle B is closer to the receiving lens (101) than the circle A.

10. The multi-function sensor of claim 1, wherein: the sunlight ray sensing element comprises a sunlight ray receiving tube (203), one sunlight optical lens (201) is provided with at least one group of optical surfaces, each group of optical surfaces comprises an incident surface (2011), a total reflection surface (2012) and an emergent surface (2013), and one group of optical surfaces is correspondingly provided with one sunlight ray receiving tube (203); the external light rays are emitted into the sunlight optical lens (201) from the incident surface (2011) and then emitted to the total reflection surface (2012), total reflection occurs on the total reflection surface (2012), the external light rays after total reflection are emitted into the emergent surface (2013) in the sunlight optical lens (201), and are emitted to the sunlight light ray receiving tubes (203) corresponding to the group of optical surfaces from the emergent surface (2013).

11. The multi-function sensor of claim 10, wherein: one sunlight optical lens (201) is provided with two groups of optical surfaces, one optical lens (201) is correspondingly provided with two sunlight ray receiving tubes (203), each sunlight ray receiving tube (203) corresponds to one group of optical surfaces of the sunlight optical lens (201), the two groups of optical surfaces are symmetrically arranged, the two sunlight ray receiving tubes (203) are symmetrically arranged, and the distance D between the two sunlight ray receiving tubes (203) is less than or equal to 8mm.

12. The multi-function sensor of claim 1, wherein: the novel solar energy collector is characterized by further comprising a rear cover and a protective cover, wherein the rear cover is pure black, and the protective cover is made of transparent materials.

13. The multi-function sensor of claim 6, wherein: a silica gel layer is arranged between the inductor body and the protective cover, and the silica gel layer covers the inductor body.

14. The multi-function sensor of claim 6, wherein: the sensor body further comprises a shell, the sensing component is arranged between the shell and the rear cover, and the shell is pure black.