[汽车修理知识]The development process of reversing radar

usually,Reversing radarBy ultrasoundsensor(Commonly known as probe), controller andmonitor(orbuzzer) And other parts.Reversing radarGenerally, the principle of ultrasonic distance measurement is adopted. Under the control of the controller,sensorTransmit ultrasonic signals, when encountering obstacles, echo signals are generated. After the sensors receive the echo signals, the controller will process the data to determine the position of the obstacles, and the display will display the distance and send out other warning signals to get timely warnings. , So that the driver knows what to do when reversing, making reversing easier. In a few years, with the development of technology and changes in user needs, the reversing radar has undergone roughly six generations of development.

The first generation: Remind by the horn when reversing. "Please pay attention to reversing"! Presumably many people still remember this sound. This is the first generation of reversing radar, and only a small number of commercial vehicles are still in use. As long as the driver puts on the reverse gear, it will sound to remind people around. In a sense, it does not directly help the driver, and it is not a real reversing radar. The price is cheap and is basically an obsolete product.

The second generation: Use the buzzer to prompt the driver with different sounds. This is the real beginning of the reversing radar system. When reversing, if there is an obstacle 1.8m-1.5m behind the car, the buzzer will start to work. The faster the buzzer, the closer the vehicle is to the obstacle. However, there is no voice prompt and no distance display. Although the driver knows that there is an obstacle, he cannot determine how far the obstacle is from the car, which is of little help to the driver.

The third generation: The digital band displays the specific distance or distance range. This generation of products is much better than the second generation, and it can show the distance of obstacles behind the car from the car body. If it is an object, it starts to display at 1.8 meters; if it is a person, it starts to display at a distance of about 0.9 meters. This generation of products has two display methods. Digital display products display distance numbers, while band display products are distinguished by three colors: green represents a safe distance; yellow represents a warning distance; red represents a dangerous distance, and you must stop reversing. The third-generation product combines digital and band, but it is more practical, but it is not beautiful to install in the car.

Fourth generation: dynamic display on LCD screen. This generation of products has a qualitative leap, especially the dynamic display system began to appear on the screen display.No need to reverse gear, just startcar, The car pattern and the distance of obstacles around the vehicle will appear on the display. The color is clear and beautiful, and the appearance is beautiful. It can be directly pasted on the dashboard, and the installation is very convenient. However, although the appearance of the liquid crystal display is exquisite, it has high sensitivity and weak anti-interference ability, so there are more false alarms.

Fifth generation: Magic mirror reversing radar. Combining the advantages of previous generations of products, using the latest bionic ultrasonic radar technology, equipped with high-speed computer control, it can accurately detect obstacles within 2 meters all-weather, and remind the driver with different levels of voice prompts and intuitive displays .Magic mirror reversing radar can putrearview mirror, Reversing radar, hands-free phone, temperature display and in-car air pollution display and other functions are integrated, and the voice function is designed. Because its shape is just a rear-view mirror, it can be installed directly on the rear-view mirror in the car without occupying space in the car. And the colors and styles are diverse, which can be selected according to personal needs and interior decoration.

The sixth generation: integrated audio-visual system. It has added a lot of functions on the basis of the fifth-generation product. It belongs to the sixth-generation product and is specially produced for high-end cars. From the appearance point of view, this system is more refined and elegant than the fifth-generation product; from the functional point of view, it not only has all the functions of the fifth-generation product, but also integrates the audio-visual system of high-end cars, which can be displayed on the display. Watch the DVD video.

There are currently more than 20 reversing radar brands on the market, with prices ranging from hundreds of yuan to one or two thousand yuan. When purchasing a reversing radar, you can consider the following aspects: function, performance, appearance, quality, installation, price, etc.

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