Vehicle-mounted camera device with image secondary reconstruction and demisting functions and demisting method

Abstract

The invention belongs to the technical field of automotive electronics, and particularly relates to a vehicle-mounted camera device with image secondary reconstruction and defogging functions and a defogging method. The device is composed of a camera, a second camera support, a camera lens shell, a camera outer shell, a first camera support, a glass cover, an ultrasonic vibrator, a sensor, a control circuit and an AI image processing module. The camera device can be enhanced through an AI image processing module to display a numerical value of a distance between the camera device and a rear shelter in real time, so that the shooting definition and visibility are improved, and the probability of misjudgment of a driver is reduced; according to the demisting method, mist on a camera lens is removed by adopting an ultrasonic technology, no chemical medicine or physical method is needed for demisting, the lens does not need to be disassembled or a filter does not need to be replaced, and damage and influence on the vehicle-mounted camera are avoided; and transmitting and receiving of the ultrasonic waves are controlled through the control circuit, so that fog on the lens is removed.

Description

Technical Field

[0001] The present invention belongs to the field of automotive electronics, and particularly relates to an in-vehicle anti-fog camera device capable of performing secondary image reconstruction and an anti-fog method. Background Art

[0002] When a vehicle is driving in rainy or snowy weather, the phenomenon of fogging on the in-vehicle camera often occurs. Especially in the northeastern region, due to the large temperature difference between indoors and outdoors in winter, when the driver enters the underground garage, if the camera is fogged, it is impossible to clearly see the image of the reverse camera in time, and it is also very difficult to observe the distance from the rear obstacles through the image, making it impossible to reverse safely.

[0003] Traditional cameras can neither perform self-cleaning of the device nor display the length of the distance. In case of the above situation, either wait for the water mist to disappear naturally or use an electric heating device to remove the water mist. However, the natural elimination method takes too long; while using an electric heating device, since the heat generated by the heating wire is evenly distributed over the entire mirror surface and directly dissipated to the outside, not only is the energy consumption large, but also due to the slow heating of the mirror surface, the anti-water effect is weak.

[0004] Based on this, it is necessary to develop an in-vehicle camera device and an anti-fog method with secondary image reconstruction and anti-fog functions to effectively solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide an in-vehicle camera device with secondary image reconstruction and anti-fog functions, and also provide an anti-fog method to solve the problem of using ultrasonic technology to remove the fog on the camera lens, and can display the distance value from the rear obstacle in real time, improve the clarity and visibility of its shooting, and reduce the probability of driver's misjudgment.

[0006] The object of the present invention is achieved by the following technical solutions:

[0007] An in-vehicle camera device with secondary image reconstruction and anti-fog functions includes a camera mechanism, an AI image processing module integrated in the audio assembly, an ultrasonic oscillator 7, a sensor 8, and a control circuit 9;

[0008] Among them, the camera mechanism is composed of a camera 1, a camera housing, and a camera bracket; the camera 1 is arranged at the rear of the vehicle body and can obtain rear video images to assist the user in reversing; the camera housing includes a camera lens housing 3 and a camera outer housing 4; the camera bracket includes a camera first bracket 5 and a camera second bracket 2 provided on the camera first bracket 5;

[0009] A glass cover 6 is provided between the camera lens housing 3 and the camera 1. The sensor 8 is fixed between the glass cover 6 and the camera lens housing 3. The ultrasonic oscillator 7 is fixed on the glass cover 6 and forms a certain angle with the normal direction of the glass cover 6. When the ultrasonic oscillator 7 is activated, the ultrasonic oscillator 7 can drive the glass cover 6 to vibrate reciprocally along the normal, and use the force generated by the vibration amplitude to make the water vapor attached to the glass cover generate an amplitude and break away from its original position.

[0010] The control circuit 9 includes a control unit 901 and a calculation unit 902. The calculation unit 902 is electrically connected to the control unit 901, and the control unit 901 can control the vibration of the ultrasonic oscillator 7.

[0011] The sensor 8 is fixed between the glass cover 6 and the camera lens housing 3 and is used to collect information about the fog, including a photosensitive resistor 801 and a light receiving device 802. The sensor 8 can emit light to irradiate the glass cover 6, and the light receiving device 802 is located on the refracted light path and can receive the refracted light. The photosensitive resistor 801 is located inside the light receiving device 802, and the photosensitive resistor 801 is electrically connected to the calculation unit 902 of the control circuit 9. The photosensitive resistor 801 can feed back the received luminous flux to the calculation unit 902 on the control circuit 9 for calculation. The calculation unit 902 feeds back the calculation result to the control unit 901, and the control unit 901 controls the vibration of the ultrasonic oscillator according to the calculation result.

[0012] Further, the camera 1 is fixed inside the camera outer housing 4 of the camera housing, and the camera outer housing 4 is fixed on the camera first bracket 5.

[0013] Further, a camera lens housing 3 is provided outside the camera 1, and the camera lens housing 3 is snap-connected to the camera outer housing 4.

[0014] Further, the camera 1 is installed on the rear door body sheet metal through the camera second bracket 2.

[0015] Further, there is a shielded wire at the rear of the camera 1, which is connected to the vehicle wiring harness using a connector.

[0016] Further, the angle between the ultrasonic oscillator 7 and the normal direction of the glass cover 6 is 30 - 60 degrees.

[0017] Further, the amplitude of the ultrasonic oscillator 7 is 40μm - 80μm.

[0018] Further, when the camera 1 is turned on, the sensor 8 can be automatically turned on. The sensor 8 detects the water mist coverage area on the surface of the glass cover 6 of the camera 1 and feeds it back to the control circuit 9. The calculation unit 902 on the control circuit 9 calculates the water mist situation, and the steps are as follows: When there is no water mist on the glass cover 6, the refracted light quantity is the largest, set as M. When the glass cover 6 is completely covered by rain and snow and the camera 1 cannot display the shooting information, the refracted light quantity is the smallest, set as N. The interval between M and N is equally divided into three parts. Let the light refracted by the real-time water mist situation be Q. When 2 / 3(M - N) < Q ≤ M, the three-level defogging function is turned on. When 1 / 3(M - N) < Q ≤ 2 / 3(M - N), the two-level defogging function is turned on. When N < Q ≤ 1 / 3(M - N), the one-level defogging function is turned on.

[0019] Further, the included angle between the light-emitting optical path of the sensor 8 and the glass cover 6 is 30 - 60 degrees.

[0020] A defogging method for a vehicle-mounted camera device with image secondary reconstruction and defogging functions includes the following steps:

[0021] S1. Defogging of the vehicle-mounted camera device:

[0022] S11. Start the camera 1 and the sensor 8, and the sensor 8 emits light.

[0023] S12. The light irradiates on the glass cover 6, and the light receiving device 802 receives the refracted light.

[0024] S13. The photoresistor 801 feeds back according to the received luminous flux to the calculation unit 901 on the control circuit 9 for calculation.

[0025] S14. The calculation unit 902 feeds the calculation result back to the control unit 901, and the control unit 901 then controls the ultrasonic oscillator 7 to vibrate according to the calculation result of S3.

[0026] S2. Image secondary reconstruction:

[0027] After the camera is defogged, the image is transmitted to the AI image processing module, and the AI image processing module performs gamma transformation, and finally outputs an image marked with the distance data of the rear obstacle.

[0028] Among them, the maximum value of the refracted light quantity is M, the minimum value of the refracted light quantity is N, and the actually refracted light is Q. When 2 / 3(M - N) < Q ≤ M, the three-level defogging function is turned on. When 1 / 3(M - N) < Q ≤ 2 / 3(M - N), the two-level defogging function is turned on. When N < Q ≤ 1 / 3(M - N), the one-level defogging function is turned on.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] 1. The vehicle-mounted camera device and defogging method of the present invention with image secondary reconstruction and defogging functions can conveniently and effectively display the situation of the obstacle behind, efficiently, quickly and reliably remove the fog on the lens, thereby ensuring the clarity and visibility of the shooting, reducing the interference of the fog on the image, improving the accuracy of the reverse image imaging and the stability of the driver's operation, and reducing the error rate;

[0031] 2. The camera device has an intelligent control system, which can automatically adjust the frequency and intensity of the ultrasonic wave according to the actual situation to achieve the best defogging effect;

[0032] 3. The camera device can also be enhanced by the AI image processing module to display the distance value from the rear obstruction in real time, reduce the probability of driver's misjudgment while improving the clarity and visibility of its shooting;

[0033] 4. The defogging method uses ultrasonic technology to remove the fog on the camera lens, without using any chemical drugs or physical methods to defog, without disassembling the lens or replacing the filter, avoiding damage and influence on the vehicle-mounted camera. Specifically, the sensor collects the information of the fog, and the control circuit controls the emission and reception of the ultrasonic wave, so as to realize the removal of the fog on the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0035] Figure 1 Schematic diagram of the vehicle-mounted camera device of the present invention with image secondary reconstruction and defogging functions;

[0036] Figure 2 Schematic diagram of the working principle of the camera of the present invention;

[0037] Figure 3 Schematic diagram of the glass cover and ultrasonic oscillator of the present invention;

[0038] Figure 4 Schematic diagram of the control circuit of the present invention;

[0039] Figure 5 Schematic diagram of the internal structure of the present invention.

[0040] In the figure: 1. Camera; 2. Second camera bracket; 3. Camera lens housing; 4. Camera outer housing; 5. First camera bracket; 6. Glass cover; 7. Ultrasonic vibrator; 8. Sensor; 801. Photoresistor; 802. Light receiving device; 9. Control circuit; 901. Control unit; 902. Calculation unit. Detailed implementation mode

[0041] The present invention will be further described below in conjunction with embodiments:

[0042] The present invention will be further described in detail below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that, for the sake of description, only parts related to the present invention rather than all structures are shown in the drawings.

[0043] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present invention, the terms "first", "second", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

[0044] The vehicle-mounted camera device of the present invention with image secondary reconstruction and defogging functions includes a camera mechanism, an AI image processing module, an ultrasonic vibrator 7, a sensor 8, and a control circuit 9.

[0045] The AI image processing module is integrated in the audio assembly.

[0046] Among them, the camera mechanism is composed of a camera 1, a camera housing, and a camera bracket.

[0047] The camera housing includes a camera lens housing 3 and a camera outer housing 4.

[0048] The camera bracket includes a first camera bracket 5 and a second camera bracket 2, and the second camera bracket 2 is arranged on the first camera bracket 5.

[0049] The camera 1 is fixed in the camera outer housing 4, the camera outer housing 4 is fixed on the first camera bracket 5, a camera lens housing 3 is arranged outside the camera 1, and the camera lens housing 3 is snap-connected to the camera outer housing 4. Specifically, the camera 1 is arranged at the rear of the vehicle body and can acquire rear video images to assist the user in reversing. The camera 1 is installed on the rear door body sheet metal (snap connection interface) through the second camera bracket 2. At the same time, there is a shielded wire at the rear of the camera 1, which is connected to the vehicle wiring harness using a connector. The implementation method is shown in Figure 2 .

[0050] A glass cover 6 is provided between the camera lens housing 3 and the camera 1. The sensor 8 is fixed between the glass cover 6 and the camera lens housing 3, and the ultrasonic oscillator 7 is fixed on the glass cover 6. Specifically, the ultrasonic oscillator 7 is installed on the back of the glass cover 6 at a certain angle with respect to the normal direction of the glass cover 6.

[0051] The angle between the ultrasonic oscillator 7 and the normal direction of the glass cover 6 is 30 - 60 degrees. Preferably, the angle between the ultrasonic oscillator 7 and the normal direction of the glass cover 6 is 30 degrees. The amplitude of the ultrasonic oscillator 7 is 40μm - 80μm. When the ultrasonic oscillator 7 is activated, the ultrasonic oscillator 7 drives the glass cover 6 to vibrate reciprocally along the normal direction with an amplitude of 40μm - 80μm. Using the force generated by the vibration amplitude, the water vapor attached to the glass cover is caused to have an amplitude and break away from its original position, thereby producing a defogging effect.

[0052] The control circuit 9 includes a control unit 901 and a calculation unit 902. The calculation unit 902 is electrically connected to the control unit 901, and the control unit 901 can control the vibration of the ultrasonic oscillator 7.

[0053] The sensor 8 is responsible for collecting information about the fog. The sensor 8 is fixed between the glass cover 6 and the camera lens housing 3 and includes a photoresistor 801 and a light receiving device 802. The sensor 8 can emit light, and the light, that is, the light output optical path, can irradiate onto the glass cover 6. The light receiving device 802 is located on the refracted light optical path and can receive the refracted light. When the camera 1 is turned on, the sensor 8 is automatically turned on, and the sensor 8 detects the water mist coverage area on the surface of the glass cover 6 of the camera 1. The photoresistor 801 is located inside the light receiving device 802, and the photoresistor 801 is electrically connected to the calculation unit 902. The photoresistor 801 can feed back the received light flux to the calculation unit 902 on the control circuit 9 for calculation. The angle between the light output optical path of the sensor 8 and the glass cover 6 is 30 - 60 degrees. Preferably, the angle between the light output optical path of the sensor 8 and the glass cover 6 is 45 degrees. The calculation unit 902 feeds back the calculation result to the control unit 901, and the control unit 901 controls the vibration of the ultrasonic oscillator according to the calculation result.

[0054] Specifically, the LED light emitted by the sensor 8 forms a 45 - degree angle with the glass cover 6. When the vehicle starts the camera 1, the sensor 8 is started and emits LED light. The photoresistor 801 in the sensor 8 is used to receive the refracted light and convert the optical signal into an electrical signal.

[0055] Specifically, the sensor 8 feeds back the water mist condition on the surface of the camera 1 to the control circuit 9. The calculation unit 902 on the control circuit 9 calculates the water mist condition, and the calculation method is as follows: when there is no water mist on the glass cover 6, the refracted light quantity is the maximum, set as M; when the glass cover 6 is completely covered by rain and snow and the camera 1 cannot display the shooting information, the refracted light quantity is the minimum, set as N. The interval between M and N is equally divided into three parts. Let the light refracted by the real-time water mist condition be Q. When 2 / 3(M - N) < Q ≤ M, the three-stage defogging function is activated; when 1 / 3(M - N) < Q ≤ 2 / 3(M - N), the two-stage defogging function is activated; when N < Q ≤ 1 / 3(M - N), the one-stage defogging function is activated.

[0056] Working principle:

[0057] The refracted LED light is tested by the LED light receiving device 802. The emitted light forms an angle with the detection surface. When there is more water mist on the glass cover 6, the refracted light decreases, and vice versa. The light quantity forms an electrical signal through the photosensitive resistor 801 and is fed back to the sensor 8. The sensor 8 feeds back the water mist condition on the surface of the camera 1 to the control circuit 9. The control unit 901 on the control circuit 9 judges the water mist condition, and the calculation unit 902 calculates. When the water mist condition exceeds the threshold, the ultrasonic defogging function is activated. The vibration of the ultrasonic oscillator 7 drives the glass cover 6 to vibrate, thereby quickly driving away the water droplets.

[0058] A defogging method for a vehicle-mounted camera device with image secondary reconstruction and defogging functions includes the following steps:

[0059] S1. Defogging of the vehicle-mounted camera device:

[0060] S11. Start the camera 1 and the sensor 8, and the sensor 8 emits light.

[0061] S12. The light irradiates on the glass cover 6, and the light receiving device 802 receives the refracted light.

[0062] S13. The photosensitive resistor 801 feeds back according to the received luminous flux to the calculation unit 901 on the control circuit 9 for calculation.

[0063] S14. The calculation unit 902 feeds back the calculation result to the control unit 901, and the control unit 901 controls the vibration of the ultrasonic oscillator 7 according to the calculation result of S3.

[0064] S2. Image secondary reconstruction:

[0065] After the camera is defogged, the image is transmitted to the AI image processing module, and the AI image processing module performs gamma transformation, and finally outputs an image marked with the distance data of the rear obstacle.

[0066] Specifically, the maximum value of the refracted light quantity is M, the minimum value of the refracted light quantity is N, and the actually refracted light is Q. When 2 / 3(M - N) < Q ≤ M, the three - stage defogging function is activated. When 1 / 3(M - N) < Q ≤ 2 / 3(M - N), the two - stage defogging function is activated. When N < Q ≤ 1 / 3(M - N), the one - stage defogging function is activated.

[0067] Embodiment 1

[0068] A vehicle - mounted camera device with image secondary reconstruction and defogging functions is composed of a camera 1, a second camera bracket 2, a camera lens housing 3, a camera outer housing 4, a first camera bracket 5, a glass cover 6, an ultrasonic oscillator 7, a sensor 8, a control circuit 9, and an AI image - processing module.

[0069] The camera 1 is arranged at the rear of the vehicle body and fixed inside the camera outer housing 4, capable of acquiring rear - part video images to assist the user in reversing operations. The camera outer housing 4 is fixed on the first camera bracket 5. A camera lens housing 3 is provided outside the camera 1, and the camera lens housing 3 is snap - connected to the camera outer housing 4. The camera 1 is snap - connected to the rear - door body sheet metal through the second camera bracket 2. At the same time, there is a shielded wire at the rear of the camera 1, which is connected to the vehicle - wide wiring harness using a connector.

[0070] A glass cover 6 is provided between the camera lens housing 3 and the camera 1. The sensor 8 is fixed between the glass cover 6 and the camera lens housing 3, and the ultrasonic oscillator 7 is fixed on the glass cover 6. Specifically, the ultrasonic oscillator 7 is installed on the back of the glass cover 6 and forms an angle of 30 degrees with the normal direction of the glass cover 6. When the ultrasonic oscillator 7 is activated, the ultrasonic oscillator 7 drives the glass cover 6 to vibrate reciprocally along the normal line, with an amplitude of 40μm - 80μm. Using the force generated by the vibration amplitude, the water vapor attached to the glass cover is caused to vibrate and break away from its original position, thereby producing a defogging effect.

[0071] The control circuit 9 includes a control unit 901 and a calculation unit 902. The calculation unit 902 is electrically connected to the control unit 901, and the control unit 901 can control the ultrasonic oscillator 7 to vibrate. The sensor 8 is responsible for collecting information about the fog. The sensor 8 is fixed between the glass cover 6 and the camera lens housing 3, and includes a photoresistor 801 and a light receiving device 802. The sensor 8 can emit light, and the LED light forms a 45-degree angle with the glass cover 6. The light receiving device 802 is located on the refracted light path and can receive the refracted light. When the vehicle starts the camera 1, the sensor 8 is started and the LED light is emitted. The photoresistor 801 in the sensor 8 is used to receive the refracted light and convert the optical signal into an electrical signal. When the camera 1 is turned on, the sensor 8 is automatically turned on. The sensor 8 detects the water mist coverage area on the surface of the glass cover 6 of the camera 1 and feeds it back to the control circuit 9. The photoresistor 801 is located inside the light receiving device 802, and the photoresistor 801 is electrically connected to the calculation unit 902 on the control circuit 9. The photoresistor 801 can feed back the received light flux to the calculation unit 902 on the control circuit 9 for calculation. The calculation unit 902 on the control circuit 9 calculates the water mist situation. The calculation method is as follows: When there is no water mist on the glass cover 6, the refracted light quantity is the largest, set as M. When the glass cover 6 is completely covered by rain and snow and the camera 1 cannot display the shooting information, the refracted light quantity is the smallest, set as N. The interval between M and N is equally divided into three parts. Let the light refracted by the real-time water mist situation be Q. When 2 / 3(M - N) < Q ≤ M, the three-stage defogging function is turned on. When 1 / 3(M - N) < Q ≤ 2 / 3(M - N), the two-stage defogging function is turned on. When N < Q ≤ 1 / 3(M - N), the one-stage defogging function is turned on. The calculation unit 902 feeds back the calculation result to the control unit 901, and the control unit 901 controls the vibration of the ultrasonic oscillator according to the calculation result.

[0072] Embodiment 2

[0073] A defogging method for a vehicle-mounted camera device with image secondary reconstruction and defogging functions includes the following steps:

[0074] S1. Defogging of the vehicle-mounted camera device:

[0075] S11. Start the camera 1 and the sensor 8, and the sensor 8 emits light;

[0076] S12. The light irradiates on the glass cover 6, and the light receiving device 802 receives the refracted light;

[0077] S13. The photoresistor 801 feeds back the received light flux to the calculation unit 901 on the control circuit 9 for calculation;

[0078] The calculation unit 902 feeds back the calculation result to the control unit 901, and the control unit 901 then controls the ultrasonic oscillator 7 to vibrate according to the calculation result of S3. The maximum value of the refracted light quantity is M, the minimum value of the refracted light quantity is N, and the actually refracted light is Q. When 2 / 3(M - N) < Q ≤ M, the three-stage defogging function is turned on. When 1 / 3(M - N) < Q ≤ 2 / 3(M - N), the two-stage defogging function is turned on. When N < Q ≤ 1 / 3(M - N), the one-stage defogging function is turned on;

[0079] S2. Secondary image reconstruction:

[0080] The image after the camera defogging is transmitted to the AI image processing module, and the AI image processing module performs gamma transformation. Specifically, define the input image, output image, grayscale image, read the image, grayscale it, display the grayscale image, perform power-law transformation, pause, keep the image display, and finally output the image marked with the distance data of the rear obstacle.

[0081] Note that the above is only the preferred embodiment of the present invention and the applied technical principle. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here, and various obvious changes, re-adjustments, and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A vehicle-mounted camera device with image secondary reconstruction and defogging functions, characterized in that: It includes a camera mechanism, an AI image processing module integrated in an audio assembly, an ultrasonic vibrator (7), a sensor (8) and a control circuit (9); The camera mechanism is composed of a camera (1), a camera housing and a camera bracket; the camera (1) is arranged at the rear of the vehicle body and can obtain rear video images to assist the user in reversing operations; the camera housing comprises a camera lens housing (3) and a camera external housing (4); the camera bracket comprises a first camera bracket (5) and a second camera bracket (2) arranged on the first camera bracket (5); A glass cover (6) is provided between the camera lens housing (3) and the camera (1); a sensor (8) is fixed between the glass cover (6) and the camera lens housing (3); an ultrasonic vibrator (7) is fixed on the glass cover (6) and forms a certain angle with the normal direction of the glass cover (6); when the ultrasonic vibrator (7) is started, the ultrasonic vibrator (7) can drive the glass cover (6) to vibrate back and forth along the normal line, and use the force generated by the vibration amplitude to make the water vapor attached to the glass cover generate an amplitude and leave the original position; The control circuit (9) comprises a control unit (901) and a calculation unit (902), the calculation unit (902) being connected to the control unit (901) by electrical signals, and the control unit (901) being capable of controlling the vibration of the ultrasonic vibrator (7); The sensor (8) is fixed between the glass cover (6) and the camera lens housing (3) and is used to collect fog information. The sensor (8) can emit light to illuminate the glass cover (6). The light receiving device (802) is located on the optical path of the refracted light and can receive the refracted light. The photoresistor (801) is located in the light receiving device (802). The photoresistor (801) is connected to the calculation unit (902) via an electrical signal. The photoresistor (801) can feed back the received light flux to the calculation unit (902) on the control circuit (9) for calculation. The calculation unit (902) feeds back the calculation result to the control unit (901), and the control unit (901) controls the vibration of the ultrasonic vibrator according to the calculation result.

2. The vehicle-mounted camera device with image secondary reconstruction and defogging functions according to claim 1, characterized in that: The camera (1) is fixed inside a camera outer shell (4) of a camera housing, and the camera outer shell (4) is fixed on a first camera bracket (5).

3. The vehicle-mounted camera device with image secondary reconstruction and defogging functions according to claim 1, characterized in that: A camera lens housing (3) is provided on the outside of the camera (1), and the camera lens housing (3) is snap-connected to the camera external housing (4).

4. The vehicle-mounted camera device with image secondary reconstruction and defogging functions according to claim 1, characterized in that: The camera (1) is mounted on the rear door body sheet metal via a second camera bracket (2).

5. The vehicle-mounted camera device with image secondary reconstruction and defogging functions according to claim 1, characterized in that: The rear part of the camera (1) is provided with a shielded wire, which is connected to the wiring harness of the entire vehicle using a connector.

6. The vehicle-mounted camera device with image secondary reconstruction and defogging functions according to claim 1, characterized in that: The angle between the ultrasonic vibrator (7) and the normal direction of the glass cover (6) is 30-60 degrees.

7. The vehicle-mounted camera device with image secondary reconstruction and defogging functions according to claim 1, characterized in that: The amplitude of the ultrasonic vibrator (7) is 40 μm-80 μm.

8. The vehicle-mounted camera device with image secondary reconstruction and defogging functions according to claim 1, characterized in that: When the camera (1) is turned on, the sensor (8) can be automatically turned on. The sensor (8) detects the water mist coverage area on the surface of the glass cover (6) of the camera (1) and feeds back to the control circuit (9). The calculation unit (902) on the control circuit (9) calculates the water mist situation. The steps are as follows: when there is no water mist on the glass cover (6), the maximum amount of refracted light is set to M. When the glass cover (6) is completely covered with rain and snow and the camera (1) cannot display shooting information, the minimum amount of refracted light is set to N. The area from M to N is equally divided into three parts. The light refracted by the real-time water mist situation is set to Q. When 2 / 3 (MN) < Q ≤ M, the third-level defog function is turned on. When 1 / 3 (MN) < Q ≤ 2 / 3 (MN), the second-level defog function is turned on. When N < Q ≤ 1 / 3 (MN), the first-level defog function is turned on.

9. The vehicle-mounted camera device with image secondary reconstruction and defogging functions according to claim 1, characterized in that: The angle between the light output path of the sensor (8) and the glass cover (6) is 30-60 degrees.

10. The defogging method for a vehicle-mounted camera device with image secondary reconstruction and defogging functions according to claim 1, characterized in that: The following steps are involved: S1. Defogging of vehicle-mounted camera device: S11, starting the camera (1) and the sensor (8), so that the sensor (8) emits light; S12, light is irradiated onto the glass cover (6), and the light receiving device (802) receives the refracted light; S13, the photoresistor (801) feeds back the received light flux to the calculation unit (901) on the control circuit (9) for calculation; S14 The calculation unit (902) feeds back the calculation result to the control unit (901), and the control unit (901) controls the vibration of the ultrasonic vibrator (7) according to the calculation result of S3; S2, image secondary reconstruction: The camera image after defog is transmitted to the AI ​​image processing module, which performs gamma transformation and finally outputs an image with data indicating the distance to the rear obstacle; Among them, the maximum value of the refracted light is M, the minimum value of the refracted light is N, and the actual refracted light is Q. When 2 / 3 (MN) < Q ≤ M, the third-level defog function is turned on, when 1 / 3 (MN) < Q ≤ 2 / 3 (MN), the second-level defog function is turned on, and when N < Q ≤ 1 / 3 (MN), the first-level defog function is turned on.

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