GUANGZHOU GOODVIEW ELECTRONIC EQUIPMENT CO .,LTD
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The value of using electric rearview mirrors in automobiles
Function of electronic rearview mirror
Wide field of vision
Traditional optical rearview mirrors have limited field of view due to the curvature and installation position of the mirror surface, especially in the blind spots on both sides and behind. The electronic rearview mirror captures the surrounding environment through high-definition cameras, processes it, and displays it on the display screen inside the car, greatly expanding the driver's field of vision, reducing blind spots, and improving driving safety.
Night driving is safer
The electronic rearview mirror is equipped with infrared fill light function. When the night light is dim, the infrared fill light will automatically turn on, improving the camera's sensitivity and making the picture clearer. In addition, electronic rearview mirrors also have night vision enhancement function, which can automatically adjust the brightness and contrast of the picture, making night driving safer.
Anti glare function
Traditional optical rearview mirrors are easily affected by the high beam headlights of rear vehicles, resulting in blurred vision for drivers and affecting driving safety. The electronic rearview mirror has the function of automatically adjusting the brightness of the image. When the high beam of the vehicle behind is detected, the brightness of the image will be automatically reduced to avoid glare and ensure that the driver's line of sight is clear.
Reverse assist function
The electronic rearview mirror is equipped with a reverse assist line, which can help the driver more accurately determine the distance between the vehicle and obstacles, and improve the accuracy and safety of reversing into the garage. At the same time, some electronic rearview mirrors also have a dynamic reverse assist line function, which can automatically adjust the length of the assist line according to the vehicle's driving speed, making reversing easier.
Record the driving trajectory
Some electronic rearview mirrors also have a driving record function, which can record real-time images of the vehicle's driving process, making it convenient for drivers to replay and view, and can also serve as evidence of traffic accidents.
Function Description
| function | description |
| Startup logic | After ACC, the rear screen will be automatically started and the recording mode will be entered. ACC OFF screen off, time-lapse recording 15S; |
| Installation Preservation | After the system settings are modified, the system needs to be able to remember the last setting after the ACC OFF restart; |
| Angle adjustment | Up and down angle : 3,2,1,0,-1,-2,-3, the default recognition is 0 files, you can adjust up and down 3 files, a total of 7 files; |
| Playback mode | It is divided into general video, emergency video, which can be played and deleted in the rearview mirror; |
| Brightness adjustment | Divided into low, medium, high, and automatic (A), 4 grades; The default is automatic; |
| Light/dark mode | Short press the selection button ▼ to switch between standard display (dark) and brighten display (bright), the screen prompt is 1 second, and the default standard display is displayed; |
| Collision sensitivity | The gravity parameters of the G-sensor can be set, which are low, medium and high, and the default is high; |
| After the collision is triggered, the recording content is the current recorded video duration + 30 seconds after the trigger. | |
| Supporting Language | Traditional Chinese, Simplified Chinese, English, Japanese, Spain, language selection can be performed for the first time at start-up; |
Product parameters
| Item | Description |
| LCD Resolution | 1920 X 384 |
| Contrast ratio | 1000:01:00 |
| Luminance | MAX2500cd/m² |
| Front Lens | 6G,H:125° V:74° |
| rame rate | 1080P@30fps |
| Rear Lens | 6G,H:68° V:27° |
| Frame rate | 1080P@50fps/1080P@60fps |
| Start-up time | ≤4S |
| Current | <1400mA |
| Standby Current | <1mA |
| Rated Voltage | 12V |
| Voltage Range | 9V ~ 16V |
| Operation Temp. | -30℃ ~ 80℃ |
| Storage Temp. | -40℃ ~ 85℃ |
Field of view of electronic rearview mirror
The field of view of traditional physical rearview mirrors is 300%
and a larger field of view can enhance driving safety
1080P high-definition dual recording before and after, recording the beautiful scenery of the journey
Product breakdown diagram
Adopting NOVSTEK NT96663 main control chip, there are supporting factory cases from automobile manufacturers
Adopting a car grade 2500CD/m ² high brightness screen, the image can still be seen clearly under strong light during the day
Heat dissipation scheme for PCB motherboard to enhance stability
1. Increase the distribution area of PCB and improve the heat dissipation surface
2. Add thermal conductive sheets higher than the chip's heat generation index to conduct and dissipate heat
3. Add heat dissipation holes to the shell to improve air flow efficiency
High frequency radiation isolation scheme adopted by PCB motherboard
1. For high radiation risk areas with near-field scanning, use a mask cover grounded for. masking
2. Regarding the connection between the camera and the motherboard
a. Adopting MIPI interface to reduce high-frequency radiation
b. Using custom masked FPC for masking
c. Add grounding at both ends of the FFC socket to prevent radiation overflow
3. Circuit design and PCB design considerations
a. Power supply design layout to ensure smooth input and output, clock and ground. protection, and complete requirements as much as possible
b. Impedance matching and signal integrity design
c. Reasonably use radiation suppression devices such as frequency spreading crystal. oscillators, common mode inductors, and electrostatic tubes.
High strength LVDS coaxial signal transmission line connector increases signal transmission stability
All metal shell design can shield signal interference, improve waterproof level, anti-aging, and increase service life
Installation diagram of electronic rearview mirror