Automobile optical sensor

Abstract

The utility model relates to the technical field of optical sensors, in particular to an automobile optical sensor, which comprises an annular protective casing mounted on an automobile, a sensor main body is arranged in the annular protective casing, an optical signal transmitting unit and an optical signal receiving unit are arranged in the sensor main body, and the optical signal transmitting unit is connected with the optical signal receiving unit. One end of the annular protection shell is fixedly connected with an annular protection outer sleeve, a protection lens is installed inside the annular protection outer sleeve, and the protection lens is used for providing protection for the sensor main body. The protection lens is used for protecting the sensor main body, the sensor main body is prevented from being polluted or damaged, and windshield washer fluid on an automobile can be directly sprayed to the surface of the protection lens through the liquid outlet pipeline by utilizing the micro pump, so that the surface of the protection lens is prevented from being polluted, and an optical signal of the sensor main body is prevented from being hindered.

Description

Technical Field

[0001] The utility model relates to the technical field of optical sensors, in particular to an automotive optical sensor. Background Art

[0002] Optical sensors mainly detect and measure optical signals through the interaction between light and matter. They have high sensitivity and accuracy, can achieve non-contact, non-destructive and fast measurement, and are widely used in industrial products such as automobiles.

[0003] In the prior art, there is an optical sensor system for a car proposed in patent application number “CN201880078616.7”, in which the optical sensor system is configured to monitor a first monitoring area outside the car.

[0004] However, optical sensors in the existing technology all require transparent glass to be installed on the outside to provide protection for the sensors and prevent them from being damaged or contaminated. When the car is driving, dirty water and stains are rolled up and attached to the glass surface of the sensor, which will hinder the light signal of the optical sensor and affect the normal use of the optical sensor. Utility Model Content

[0005] The purpose of the present utility model is to provide an automotive optical sensor to solve the problems raised in the above background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] An automotive optical sensor includes an annular protective shell installed on the automobile, a sensor body is arranged inside the annular protective shell, and the sensor body contains an optical signal sending unit and an optical signal receiving unit. An annular protective jacket is fixedly connected to one end of the annular protective shell, and a protective lens is installed inside the annular protective jacket. The protective lens is used to provide protection for the sensor body without affecting the passage of optical signals.

[0008] A micro pump is provided on the annular protective shell, and the liquid inlet of the micro pump is fixedly connected to a liquid inlet pipe, one end of which is used to connect to the glass liquid storage mechanism inside the car. The liquid outlet of the micro pump is fixedly connected to a liquid outlet pipe, one end of which extends into the annular protective jacket, and one end of the liquid outlet pipe is inclined, facing the side of the protective lens away from the sensor body.

[0009] Preferably, a power supply interface is provided at one end of the sensor body, and a wire threading port is provided at one end of the annular protective shell and located outside the power supply interface.

[0010] Preferably, the inner surface of the annular protective sleeve is fixedly connected to a limiting block, and the protective lens is fixedly connected to a connecting ring around it. A fixing bolt is provided on the connecting ring, and one end of the fixing bolt passes through the connecting ring and is threadedly connected to the limiting block for fixing the protective lens.

[0011] Preferably, one side of the connecting ring is fixedly connected with an L-shaped contact plate in a ring array, and the L-shaped contact plate contacts the outer shell portion of the sensor body.

[0012] Preferably, a pump fixing seat is fixedly connected to the top of the annular protective shell, the micro pump is fixedly installed on the pump fixing seat, and the bottom of the pump fixing seat is fixedly connected to two symmetrically arranged supporting rods, one end of the supporting connecting rod is fixedly connected to the annular protective shell.

[0013] Preferably, a first ventilation slot is provided on the pump fixing seat, and a plurality of second ventilation slots are evenly provided on the annular protective shell.

[0014] Beneficial effects of the utility model:

[0015] The utility model provides protection for the sensor body by installing a protective lens inside the annular protective jacket, without affecting the normal transmission and reception of light signals by the sensor body, thereby preventing the sensor body from being contaminated or damaged. At the same time, a micro pump can be used to spray the windshield washer fluid brought by the car directly onto the surface of the protective lens through the liquid outlet pipe, thereby preventing the surface of the protective lens from being contaminated, thereby preventing the light signal of the sensor body from being blocked and affecting the normal use of the sensor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, it is possible for a person skilled in the art to derive other drawings based on these drawings without inventive effort.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This utility model Figure 1 A side view of the middle annular protective shell;

[0019] Figure 3 This utility model Figure 1 Schematic diagram of the structure inside the middle annular protective shell;

[0020] Figure 4 This utility model Figure 3 Side view of the middle connecting circle.

[0021] The reference numerals in the figures are as follows:

[0022] 1. Annular protective shell, 2. Sensor body, 3. Annular protective jacket, 4. Protective lens, 5. Micro pump, 6. Liquid inlet pipe, 8. Liquid outlet pipe, 9. Power supply interface, 10. Threading port, 11. Limiting block, 12. Connecting ring, 13. Fixing bolt, 14. L-shaped resistance plate, 15. Pump fixing seat, 16. Support connecting rod, 17. First ventilation slot, 18. Second ventilation slot. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] An automotive optical sensor includes an annular protective housing 1 mounted on a vehicle, a sensor body 2 disposed within the annular protective housing 1, the sensor body 2 containing an optical signal sending unit and an optical signal receiving unit, an annular protective jacket 3 fixedly connected to one end of the annular protective housing 1, and a protective lens 4 installed within the annular protective jacket 3, the protective lens 4 being used to provide protection for the sensor body 2 without affecting the passage of optical signals.

[0025] A micro pump 5 is provided on the annular protective shell 1. The liquid inlet of the micro pump 5 is fixedly connected to a liquid inlet pipe 6. One end of the liquid inlet pipe 6 is used to be connected to the glass liquid storage mechanism inside the car. The liquid outlet of the micro pump 5 is fixedly connected to a liquid outlet pipe 8. One end of the liquid outlet pipe 8 extends into the annular protective jacket 3. One end of the liquid outlet pipe 8 is inclined and faces the side of the protective lens 4 away from the sensor body 2. The model of the sensor body 2 is SICK DL100.

[0026] like Figure 1 The annular protective housing 1 is installed in a car for use, with one end of the annular protective jacket 3 facing the outside of the car and not blocked by other components outside the car. The micro pump 5 and the sensor body 2 are both powered from inside the car, and one end of the liquid inlet pipe 6 is connected to the windshield washer fluid storage mechanism of the car itself, so that the windshield washer fluid can be input into the micro pump 5;

[0027] The optical signal sending unit and the optical signal receiving unit are located inside the sensor body 2 and are not shown in the figure. The optical signal sending unit is formed in the form of a laser diode, which emits laser pulses of a wavelength that cannot be perceived by the naked eye. The optical signal receiving unit is formed in the form of a wavelength-matching photodiode, and distance analysis is performed through the analysis unit inside the sensor body 2.

[0028] A power supply interface 9 is provided at one end of the sensor body 2 , and a wire threading opening 10 is provided at one end of the annular protective shell 1 and outside the power supply interface 9 .

[0029] like Figure 2 and Figure 4 The line connected to the car can be extended into the annular protective shell 1 from the threading port 10 and plugged into the power interface 9 to supply power to the sensor body 2.

[0030] The inner surface of the annular protective sleeve 3 is fixedly connected with a limiting block 11, and the protective lens 4 is fixedly connected with a connecting ring 12 around it. A fixing bolt 13 is provided on the connecting ring 12. One end of the fixing bolt 13 passes through the connecting ring 12 and is threadedly connected to the limiting block 11 for fixing the protective lens 4.

[0031] like Figure 3 and Figure 4 The limiting block 11 is provided with a screw hole to realize the threaded connection with the fixing bolt 13, and the connecting ring 12 is fixed to one side of the limiting block 11 inside the annular protective sleeve 3.

[0032] One side of the connecting ring 12 is fixedly connected to an L-shaped contact plate 14 in a ring array, and the L-shaped contact plate 14 contacts the outer shell of the sensor body 2 .

[0033] like Figure 3 and Figure 4 When the connecting ring 12 is fixed in the annular protective shell 3 , the sensor body is pressed tightly by the L-shaped contact plate 14 , so that the sensor body 2 can be stably placed inside the annular protective shell 1 .

[0034] A pump fixing seat 15 is fixedly connected to the top of the annular protective shell 1, and the micro pump 5 is fixedly installed on the pump fixing seat 15. Two symmetrically arranged supporting rods 16 are fixedly connected to the bottom of the pump fixing seat 15, and one end of the supporting rod 16 is fixedly connected to the annular protective shell 1.

[0035] The pump fixing seat 15 is provided with a first ventilation slot 17 , and the annular protective shell 1 is provided with a plurality of second ventilation slots 18 evenly spaced.

[0036] like Figure 1 and Figure 2 By providing the first ventilation slot 17 and the second ventilation slot 18 , the surfaces of the micro pump 5 and the sensor body 2 are less obstructed, further enhancing the heat dissipation capacity of the micro pump 5 and the sensor body 2 .

[0037] The working principle of an automotive optical sensor provided by the utility model is as follows:

[0038] When a car is driving in the rainy season or passing through a muddy road, the rolled-up sewage carries stains and adheres to the surface of the protective lens 4. At this time, the micro pump 5 can be manually started. The micro pump 5 draws out the windshield washer fluid from the car's windshield washer fluid storage mechanism through the liquid inlet pipe 6 and sprays it onto the surface of the protective lens 4 through the liquid outlet pipe 8 facing the surface of the protective lens 4, thereby preventing stains from adhering to the surface of the protective lens 4 and affecting the passage of light signals through the protective lens 4.

[0039] Compared with related technologies, the automotive optical sensor provided by the present invention has the following beneficial effects:

[0040] The utility model installs a protective lens 4 inside the annular protective jacket 3, thereby providing protection for the sensor body 2 without affecting the normal transmission and reception of optical signals by the sensor body 2, thereby preventing the sensor body 2 from being contaminated or damaged. At the same time, a micro pump 5 can be used to spray the windshield washer fluid brought by the car directly onto the surface of the protective lens 4 through the liquid outlet pipe 8, thereby preventing the surface of the protective lens 4 from being contaminated, thereby preventing the optical signal of the sensor body 2 from being blocked and affecting the normal use of the sensor body 2.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. An automotive optical sensor, comprising an annular protective housing (1) mounted on a vehicle, characterized in that: A sensor body (2) is provided inside the annular protective housing (1), and the sensor body (2) contains an optical signal sending unit and an optical signal receiving unit. An annular protective jacket (3) is fixedly connected to one end of the annular protective housing (1), and a protective lens (4) is installed inside the annular protective jacket (3). The protective lens (4) is used to provide protection for the sensor body (2) without affecting the passage of the optical signal. The annular protective housing (1) is provided with a micro pump (5), the liquid inlet of the micro pump (5) is fixedly connected to a liquid inlet pipe (6), one end of the liquid inlet pipe (6) is used to be connected to a glass liquid storage mechanism inside the automobile, the liquid outlet of the micro pump (5) is fixedly connected to a liquid outlet pipe (8), one end of the liquid outlet pipe (8) extends into the annular protective outer shell (3), and one end of the liquid outlet pipe (8) is arranged obliquely, facing the side of the protective lens (4) away from the sensor body (2).

2. The automotive optical sensor according to claim 1, characterized in that: One end of the sensor body (2) is provided with a power supply interface (9), and one end of the annular protective shell (1) is provided with a wire threading port (10) located outside the power supply interface (9).

3. The automotive optical sensor according to claim 1, characterized in that: The inner surface of the annular protective jacket (3) is fixedly connected to a limiting block (11), and the periphery of the protective lens (4) is fixedly connected to a connecting ring (12). A fixing bolt (13) is provided on the connecting ring (12). One end of the fixing bolt (13) passes through the connecting ring (12) and is threadedly connected to the limiting block (11) for fixing the protective lens (4).

4. The automotive optical sensor according to claim 3, characterized in that: One side of the connecting ring (12) is fixedly connected to an L-shaped contact plate (14) in a ring array, and the L-shaped contact plate (14) contacts the outer shell portion of the sensor body (2).

5. The automotive optical sensor according to claim 1, characterized in that: A pump fixing seat (15) is fixedly connected to the top of the annular protective housing (1), and the micro pump (5) is fixedly mounted on the pump fixing seat (15). Two symmetrically arranged supporting connecting rods (16) are fixedly connected to the bottom of the pump fixing seat (15), and one end of the supporting connecting rod (16) is fixedly connected to the annular protective housing (1).

6. The automotive optical sensor according to claim 5, characterized in that: A first ventilation slot (17) is provided on the pump fixing seat (15), and a plurality of second ventilation slots (18) are evenly provided on the annular protective shell (1).

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