Rear view reverse system
First of all, we must introduce the principle and composition of the rear view system of the car.
Principle: The rear view system of the car is an improvement of the original radar. The camera taken by the camera mounted in the parking space transmits the signal to the on-board display installed in the driving position through the transmission line, and displays the surroundings of the vehicle through images. The obstacle situation, by expanding the driver's field of vision, helps the driver to understand the obstacles around the car, thereby increasing the safety factor of the driver and assisting the driver in safely reversing the product Composition: There are three parts: car display, reversing camera and transmission line.
How to choose several elements of the rear view system (taking the 24V truck rear view system as an example)
1. Operating voltage range
The operating voltage range is the key to determining the rear view system. Because once there is a problem with the power supply circuit, it burns the car camera and the display, and burns the car's circuit. The voltage of the big car is 24V. Generally speaking, the wider the voltage adaptation range, the better.
2. Picture color and clarity
The sharpness of the image is also an important factor in determining the choice of the reversing system, which depends mainly on the car camera and display. At present, the camera is mainly based on CCD and CMOS chips. CMOS is mainly used in the field of lower image quality. Its advantages are lower in manufacturing cost and lower in power consumption than CCD. The disadvantages are higher requirements on the light source, poor picture quality and color, especially at night. . But we can add LED lights to increase the brightness. CCD is mainly used in the field of high-quality image quality, featuring clear image, vivid color, low illumination and good imaging at night. Can be customized according to customer needs. Followed by the car display, there is a difference between the analog screen and the digital screen, but it is difficult to distinguish with the naked eye. The general digital screen is better than the analog screen, and the price is correspondingly higher.
3. Seismic performance
Because the vehicle environment is different from the security environment, the security environment is static, and the vehicle environment is dynamic, which is very shocking. Some low-priced products on the market are the security products used in the car, playing the price war, in the long run, this is not conducive to the long-term development of the company.
4. The installation structure is also a factor in determining the quality of the reversing system.
At present, there are RCA interface, BNC interface and aviation interface on the market; RCA and BNC interfaces are the interfaces used in security, which are used for large vibration on the vehicle, which takes a long time and is prone to poor contact. The aviation interface is matched with the vehicle manufacturer and has the characteristics of anti-vibration, waterproof and anti-interference. Therefore, the truck reversing system is preferred to the air interface and the quality is better.
5. Security package
Refers to the matching of the car display and the camera signal. If the camera and display of different businesses are used together, it is easy to appear color distortion and the model does not match. So buy a reversing rear view system for the camera and display.
Shenzhen Qizhou Electronics Co., Ltd. is a high-tech enterprise integrating R&D, production and sales, focusing on automobile, truck camera, display screen, reversing radar and rear view system.
https://www.sz-safe.com/rear-view-reversing-system