CN219133996U

CN219133996U - Electronic rearview mirror system

Info

Publication number: CN219133996U
Application number: CN202223577613.0U
Authority: CN
Inventors: 郝庆凯
Original assignee: TIANHAN TECHNOLOGY (WUJIANG) CO LTD
Current assignee: TIANHAN TECHNOLOGY (WUJIANG) CO LTD
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-06
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses an electronic rearview mirror system, which comprises: the camera module comprises a wide-angle lens and a light sensor electrically connected with the wide-angle lens; the display unit is electrically connected with the optical sensor and comprises a main view screen and a wide-angle screen arranged below the main view screen; the control unit can transmit the complete imaging of the light sensor to the wide-angle screen, and can intercept part of imaging on the light sensor, and the control unit can amplify the part of imaging and then transmit the amplified part of imaging to the main vision screen. The utility model can realize the effect of simultaneously displaying images in different ranges on the main view screen and the wide-angle screen by only one wide-angle lens, thereby reducing the cost and the power consumption. In addition, the display colors and the contrast ratios of different positions on the display unit can be always kept the same, and further the display effect is good.

Description

Electronic rearview mirror system

Technical Field

The utility model relates to the field of automobile rearview mirrors, in particular to an electronic rearview mirror system.

Background

An electronic rear view mirror (Camera Monitor System), abbreviated as CMS, is a camera and display based product combination, which can enhance the visual perception of a driver around and behind the vehicle, further enhancing driving safety and comfort. The images acquired by the external cameras are displayed on a display screen in the cabin after being processed by data, and meanwhile, functions like blind area early warning, obstacle prompting and the like can be integrated.

In trucks, however, a main mirror and a wide angle mirror are generally required to cooperate when taking a view of one side of the truck due to the large field of view required, which is achieved by two optical lenses in conventional rear view mirrors. In the field of electronic rearview mirrors, to achieve the above effect, a plane lens and a wide-angle lens are required to be disposed on one side of a truck, wherein the plane lens transmits image information to a main-view display screen, and the wide-angle lens transmits image information to the wide-angle display screen. However, in the above-mentioned scheme, a plurality of lenses are required to be used when obtaining the viewing angle at one side, and there is a problem of high cost and power consumption.

Disclosure of Invention

To overcome the deficiencies in the prior art, embodiments of the present utility model provide an electronic rearview mirror system for addressing one or more of the problems described above.

The embodiment of the application discloses: an electronic rearview mirror system for mounting on a truck, comprising: the camera module comprises a wide-angle lens and a light sensor electrically connected with the wide-angle lens, and the imaging area of the light sensor is square; the display unit is electrically connected with the optical sensor and comprises a main view screen and a wide-angle screen arranged below the main view screen, the wide-angle screen is square, the width of the main view screen is the same as that of the wide-angle screen, and the length of the main view screen is twice the length of the wide-angle screen; the control unit is connected with the light sensor and the display unit, the control unit can transmit the complete imaging of the light sensor to the wide-angle screen, the control unit can intercept partial imaging on the light sensor, the control unit can amplify the partial imaging and then transmit the partial imaging to the main vision screen, and the length of the partial imaging is twice the width.

Further, the control unit comprises a first control part and a second control part; the first control part is electrically connected with the light sensor and the main vision screen, can intercept the partial imaging on the light sensor, and can amplify the partial imaging and then transmit the amplified partial imaging to the main vision screen; the second control part is connected with the light sensor and the wide-angle screen, and the second control part can transmit the complete imaging of the light sensor to the wide-angle screen.

Further, the first control portion includes a system-on-chip for intercepting and expanding the partial image.

Further, an imaging area of the photosensor is smaller than an imaging area of the wide-angle lens.

Further, the display unit is arranged in the automobile, and the display unit is a whole TFT display screen.

Further, the camera module comprises a base, wherein the base can be arranged on two sides of the automobile, the appearance of the base is rectangular, the camera module is arranged on the base, and the shape of the wide-angle lens is circular.

Further, the partial image is located within the full image and adjacent to the body of the truck.

The beneficial effects of the utility model are as follows:

1. when the view angle of one side of the truck is acquired, the effect that images in different ranges are simultaneously displayed on the main view screen and the wide-angle screen can be achieved only by one wide-angle lens, so that the cost and the power consumption can be reduced. In addition, because the images on the main view screen and the wide-angle screen are derived from the wide-angle lens, the display colors and the contrast ratios of different positions on the display unit can be always kept the same, and the display effect is better.

2. The first controller can continuously and stably acquire the partial imaging under the control of the SOC, and the partial imaging is displayed on the main vision screen after stable processing, so that the stability of the whole electronic rearview mirror system is improved.

3. The wide-angle lens can be circular and the like, the application range of the wide-angle lens is expanded, and the universality of the whole rearview mirror system is higher.

4. In practical use, the rear view area adjacent to the vehicle body part is longest used for a driver, so that when the range is used for partial imaging, the partial imaging can be mainly focused on the areas around two sides of the vehicle body, and the display range on the main view screen is more practical.

The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular description of preferred embodiments, as illustrated in the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an electronic rearview mirror system in accordance with an embodiment of the present utility model;

reference numerals of the above drawings: 1. a camera module; 11. a wide angle lens; 12. a light sensor; 121. complete imaging; 122. partial imaging; 2. a display unit; 21. a main view screen; 22. a wide angle screen; 3. a control unit; 31. a first control unit; 32. and a second control unit.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1, an electronic rearview mirror system according to the present embodiment is configured to be mounted on a truck, and includes:

the camera module 1, the camera module 1 includes a wide-angle lens 11 and a photosensor 12 electrically connected with the wide-angle lens 11, the imaging area of the photosensor 12 is square, so that the photosensor 12 can receive the imaging acquired by the wide-angle lens 11 and form a complete imaging 121 on the photosensor 12;

the display element 2, the display element 2 with light sensor 12 electric connection, the display element 2 include the main screen 21 with set up in the wide angle screen 22 of main screen 21 below, wide angle screen 22 is square, main screen 21 with the width of wide angle screen 22 is the same, the length of main screen 21 is the double of wide angle screen 22 length, even make main screen 21 occupy two-thirds of the whole area of display element 2, and corresponding, wide angle screen 22 occupies one third of the whole area of display element 2, because in traditional truck rear-view mirror, main mirror and wide angle mirror occupy approximately two-thirds and one third's area respectively to make the display element 2 in this application accord with the operation habit of driver more. So that the main viewing screen 21 can display the field of view of a conventional class II main viewing mirror, while the wide angle mirror can display the field of view of a conventional class IV wide angle mirror.

The control unit 3, the control unit 3 is connected with the photosensor 12 and the display unit 2, the control unit 3 can transmit the complete image 121 of the photosensor 12 to the wide-angle screen 22, the control unit 3 can intercept a part of the image 122 on the photosensor 12, the control unit 3 can amplify the part of the image 122 and transmit the amplified part of the image to the main screen 21, and the length of the part of the image 122 is twice the width.

In this embodiment, since the imaging area of the photosensor 12 and the wide-angle screen 22 are both square, and the imaging of the wide-angle lens 11 itself is also a wide-angle image, the image displayed on the wide-angle screen 22 can be the same as the displayed image on the photosensor 12, so that the field of view of the conventional class IV wide-angle lens can be displayed. And after the partial image 122 is intercepted, the pixels of the partial image 122 are smaller than those of the main vision screen 21, after the partial image 122 is amplified, the image displayed on the main vision screen 21 can meet the pixel requirement of the main vision screen 21, so that the definition of the image on the main vision screen 21 is improved, and in addition, the partial image 122 is amplified, so that the display range on the main vision screen 21 is smaller and clearer than the range on the wide-angle screen 22, and the main vision screen 21 can display the field of view of the traditional class II main vision mirror.

With the above structure, when the view angle of the truck side is obtained, only one wide-angle lens 11 is needed to realize the effect of simultaneously displaying images in different ranges on the main view screen 21 and the wide-angle screen 22, thereby reducing the cost and the power consumption. In addition, since the images on the main view screen 21 and the wide-angle screen 22 are derived from the wide-angle lens 11, the display colors and the contrast ratios of different positions on the display unit 2 can be always kept the same, and the display effect is better.

Specifically, the control unit 3 includes a first control section 31 and a second control section 32. The first control part 31 is used for forming an image on the main screen 21, and the second control part 32 is used for forming an image on the wide-angle screen 22.

The first control portion 31 is electrically connected with the light sensor 12 and the main view screen 21, the first control portion 31 can intercept the partial image 122 on the light sensor 12, and the first control portion 31 can amplify the partial image 122 and transmit the amplified partial image to the main view screen 21, so that an image displayed on the main view screen 21 can meet the pixel requirement of the main view screen 21, and further, the definition of the image on the main view screen 21 is improved, and in addition, the display range on the main view screen 21 is smaller and clearer than the range on the wide-angle screen 22 due to the amplification of the partial image 122, so that the main view screen 21 can display the field of view of the traditional class II main view mirror.

The second control unit 32 is connected to the photosensor 12 and the wide-angle screen 22, and the second control unit 32 can transmit the full image 121 of the photosensor 12 to the wide-angle screen 22. So that the image displayed on the wide-angle screen 22 may be the same as the image displayed on the light sensor 12, so that the field of view of a conventional class IV wide-angle mirror may be displayed.

Specifically, the first control section 31 includes a system-on-chip for intercepting and enlarging the partial image 122. The system on chip, also called SOC, is an integrated circuit with a dedicated target, which contains the complete system and has the entire content of embedded software, so that the first controller can continuously and stably acquire the partial image 122 under the control of the SOC, and display the partial image 122 on the main screen 21 after the stable processing, thereby improving the stability of the whole electronic rearview mirror system.

Specifically, the imaging area of the photosensor 12 is smaller than that of the wide-angle lens 11. Therefore, the imaging range of the photosensor 12 is provided with images, the wide-angle lens 11 can be in a round shape and the like, the application range of the wide-angle lens 11 is expanded, and the universality of the whole electronic rearview mirror system is higher.

Specifically, the display unit 2 is disposed in the automobile, so that a driver can observe the automobile conveniently during driving, and the display unit 2 is a whole TFT display screen. TFT (Thin Film Transistor) is an abbreviation for thin film transistor. Each liquid crystal pixel point on the display screen is driven by a thin film transistor integrated behind the pixel point, so the TFT type display screen is also an active matrix liquid crystal display device. The TFT-type display has the advantages of high responsiveness, high brightness, high contrast ratio and the like, so that the whole display unit 2 has relatively good display performance.

Specifically, the camera module comprises a base, wherein the base can be arranged on two sides of an automobile, the appearance of the base is rectangular, the camera module 1 is arranged on the base, and the shape of the wide-angle lens 11 is circular. The camera module 1 is installed on two sides of the automobile along with the base, so that the camera module can react to the visual field of two sides of the automobile body of the truck, and correspondingly, the camera module is provided with two display units 2 which respectively react to the conditions of two sides of the automobile body, so that a good rearview effect is achieved. The circular wide-angle lens 11 may be larger than the imaging area of the photosensor 12, so that the imaging range of the photosensor 12 has images.

Specifically, the partial image 122 is located within the full image 121 and adjacent to the body of the truck. Since the rear view area adjacent to the body part is the longest for the driver in real use, when the above range is used for the partial image 122, the partial image 122 may be mainly focused on the area around the two sides of the body, so that the display range on the main view screen 21 is more practical.

The specific working principle of the utility model comprises the following steps:

the display unit 2 is arranged, the display unit comprises a main view screen 21 and a wide-angle screen 22 arranged below the main view screen 21, the wide-angle screen 22 is square, the width of the main view screen 21 is the same as that of the wide-angle screen 22, and the length of the main view screen 21 is twice the length of the wide-angle screen 22.

The wide angle lens 11 is used to capture the field of view behind the truck and form an image of the wide angle lens 11.

The imaging of the wide-angle lens 11 is received by a photosensor 12, and the imaging area of the photosensor 12 is square and larger than the imaging area of the wide-angle lens 11, so that a complete imaging 121 is formed on the photosensor 12.

The complete image 121 of the photosensor 12 is transmitted to the wide-angle screen 22.

And intercepting part of the imaging 122 on the photosensor 12, amplifying the part of the imaging 122, and transmitting the part of the imaging 122 to the main screen 21, wherein the length of the part of the imaging 122 is twice the width.

By the method, when the view angle of one side of the truck is acquired, only one wide-angle lens 11 is needed to realize the effect of simultaneously displaying images in different ranges on the main view screen 21 and the wide-angle screen 22, so that the cost and the power consumption can be reduced. In addition, since the images on the main view screen 21 and the wide-angle screen 22 are derived from the wide-angle lens 11, the display colors and the contrast ratios of different positions on the display unit 2 can be always kept the same, and the display effect is better.

Specifically, in the step of "intercepting the partial image 122 on the photosensor 12, amplifying the partial image 122, and transmitting the amplified partial image 122 to the main screen 21, where the length of the partial image 122 is twice the width", the partial image 122 is amplified by the system on chip after being intercepted. The system on a chip, also called SOC, is an integrated circuit with a dedicated target, which contains the complete system and has the entire content of embedded software, so that the first controller can continuously and stably acquire the partial image 122 under the control of the SOC, and display the partial image 122 on the main screen 21 after the stable processing. The stability of the whole electronic rearview mirror system is improved.

Specifically, in the step of "intercepting the partial image 122 on the photosensor 12, amplifying the partial image 122, and transmitting the amplified partial image 122 to the main screen 21, where the length of the partial image 122 is twice the width", the partial image 122 is located in the complete image 121 and is adjacent to the body of the truck. Since the rear view area adjacent to the body part is the longest for the driver in real use, when the above range is used for the partial image 122, the partial image 122 may be mainly focused on the area around the two sides of the body, so that the display range on the main view screen 21 is more practical.

The principles and embodiments of the present utility model have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present utility model, the present description should not be construed as limiting the present utility model in view of the above.

Claims

1. An electronic rearview mirror system for mounting on a truck, comprising:

the camera module comprises a wide-angle lens and a light sensor electrically connected with the wide-angle lens, and the imaging area of the light sensor is square;

the display unit is electrically connected with the optical sensor and comprises a main view screen and a wide-angle screen arranged below the main view screen, the wide-angle screen is square, the width of the main view screen is the same as that of the wide-angle screen, and the length of the main view screen is twice the length of the wide-angle screen;

the control unit is connected with the light sensor and the display unit, the control unit can transmit the complete imaging of the light sensor to the wide-angle screen, the control unit can intercept partial imaging on the light sensor, the control unit can amplify the partial imaging and then transmit the partial imaging to the main vision screen, and the length of the partial imaging is twice the width.

2. The electronic rearview mirror system of claim 1, wherein the control unit comprises a first control section and a second control section;

the first control part is electrically connected with the light sensor and the main vision screen, can intercept the partial imaging on the light sensor, and can amplify the partial imaging and then transmit the amplified partial imaging to the main vision screen;

the second control part is connected with the light sensor and the wide-angle screen, and the second control part can transmit the complete imaging of the light sensor to the wide-angle screen.

3. The electronic rearview mirror system of claim 2, wherein the first control portion comprises a system-on-chip for intercepting and expanding the partial image.

4. The electronic rearview mirror system of claim 1, wherein an imaging area of the light sensor is smaller than an imaging area of the wide-angle lens.

5. The electronic rearview mirror system of claim 1, wherein the display unit is disposed inside the truck, the display unit being a monolithic TFT display screen.

6. The electronic rearview mirror system according to claim 1, comprising a base capable of being disposed on both sides of the truck, the base having a rectangular shape, the camera module being mounted on the base, the wide-angle lens having a circular shape.

7. The electronic rearview mirror system of claim 6, wherein the partial image is located within the full image and adjacent to a body of the truck.