Introduction of reversing radar:
The full name of the reversing radar is "steering anti-collision radar detection", which is also called "parking assistance equipment". It is the safety protection _ auxiliary equipment when the car stops or turns, and consists of ultrasonic sensor (alias probe), control panel and display screen (or passive buzzer). The driver can be informed of the surrounding obstacles by sound or in a more direct way, which eliminates the confusion caused by the driver's up, down, left and right visits when stopping, turning and starting the car, helps the driver to eliminate the shortcomings of blind spots and blurred vision, and improves the safety factor of driving. Detection principle The reversing radar is developed and designed according to the principle that spiders travel fast at night and are not easy to collide with all obstacles. The probe is mounted on the bumper. According to the price and well-known brands, there are two, three, four, six, eight, ten and twelve probes, which are different. The key is the safety of the front bumper. The detector can be used to find the overall target of larger horizontal 120 degree and vertical 70 degree radiation sources. Its highest advantage is that it can find these obstacles that are smaller than the bumper and the driver can't see from the rear windshield, and give an alarm, such as flower beds, mud shoulders, and children squatting in the car to play. The display screen of the reversing radar is installed on the reversing mirror, which constantly advises the driver to judge the distance between the vehicle and the object behind. When the distance is dangerous, the passive buzzer will gradually buzz, prompting the driver to approach the obstacle and stop immediately. When the gear lever is in reverse gear, the reversing radar automatically starts to work. The range of laser ranging is 0.2 to 1.8 meters long, so it is very useful for drivers when parking. The reversing radar is equivalent to an ultrasonic probe. Generally speaking, ultrasonic probes can be divided into two categories: one is to use electrical equipment to generate ultrasonic waves, and the other is to use equipment to generate ultrasonic waves. At present, the common piezoresistive ultrasonic generator has two electric chips and a vibrating plate. When the differential signal is applied to both sides, the time is equivalent to the original volatility of the piezoelectric chip, and the working pressure chip may produce an earthquake. In order to study ultrasound scientifically and make better use of ultrasound, many ultrasonic speakers are designed and manufactured, and ultrasonic probes are also used in automobile reversing radar in various ways. This principle is used in a non-contact nondestructive testing technology. For laser ranging, its calculation is simple, convenient and fast, and it is easy to ensure real-time processing, and the spacing accuracy is suitable for industrial production. Reversing radar is used for laser ranging. At a certain moment, the ultrasonic data signal is transmitted, and the reversing radar receives the echo data signal wave after hitting the detected object. It must be used to measure the rapid propagation of ultrasonic data signals in materials from sending to receiving radar echo data signals, so that the distance between the probe and the detected object can be measured. Blind spot detection Although the reversing radar provides a lot of convenience for everyone, we should not rely too much on it. Because there are blind spots in radar detection, radar detection is impossible in the following situations: the obstacles that are too narrow are generally smaller than those below the probe core 10~ 15cm, and may be ignored by the probe. The closer the obstacle is to the parking space, the lower the height-width ratio, which is very dangerous. Because the ultrasonic data signal sent by radar probe is narrow, there is a big blind area when detecting narrow obstacles. Some isolation piles used to isolate cars on the road and suspension cables on telephone poles are all dangerous goods. Gully radar detection is used to detect obstacles, cars have gullies, and radar detection will never be reflected.
According to the interpretation of the main contents of the above-mentioned reversing radar, people who want to buy a car already know. _ If you have an assembly, you can also consider an _, especially if the novice is not good at reversing, you can try an _. In order to improve the safety of yourself and others, you can install a reversing radar. According to news reports, there are many things or things that turn to run over children. It must happen safely.
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