Reverse radar (dedicated to special vehicles) introduce

The full name of the reverse radar is "reverse collision avoidance radar", also known as "parking assistance device". It is a safety assistance device for parking or reversing a car, consisting of ultrasonic sensors (commonly known as probes), controllers, and displays (or buzzers). It can inform the driver of the situation of surrounding obstacles through sound or more intuitive display, relieving the driver of the trouble caused by looking forward, backward, left, and right when parking, reversing, and starting the vehicle, And it helps drivers eliminate blind spots and blurred vision, improving driving safety. The reverse radar consists of these parts: (1) Ultrasonic sensor: used to transmit and receive ultrasonic signals, and distance can be measured through ultrasonic sensor (2) Host: emits sine wave pulses to the ultrasonic sensor, processes the received signal, converts the distance value, and communicates the data with the display (3) Display or buzzer: Receive distance data from the host, display distance values based on distance distance, and provide different levels of distance alarm sounds. Number of probes: 1. Car reversing radars on the market have 2.3.4.6 and 8 probes respectively, 2-4 probes. The reversing radar is generally installed on the rear bumper of the car, and the 6-8 probes are installed in front 2, back 4, and front 4, back 4. There are also ordinary reversing radars with 6 or more probes for new off-road use, In addition to detecting the rear of the vehicle, it can also detect the front left and right corners. 2. The number of reverse radar probes for large vehicles is 4-18, which can scan and detect blind spots around the vehicle; Reminder sound: Many people tend to be particularly nervous when reversing, and hearing the continuous sound of the machine can cause them to become restless and increase their chances of making mistakes. Therefore, do not blindly believe that what can produce sound is always good. If you are sensitive to sound and easily anxious, then choose a silent reverse radar, The display is clear and concise. The radar performance mainly includes sensitivity, the presence of blind spots, and the range of detection distance. Generally, the microwave radar probe used for reversing cars should have a detection distance of 1.5-0.3 meters, and good ones can reach 2.5 meters. Some reversing radars, due to their insufficient sensitivity, have a detection distance of only 1.2-0.4 meters, This will bring certain difficulties to the driver's judgment and taking measures. Secondly, in terms of display stability and capturing target speed: display stability refers to whether the distance of the obstacle can be captured and stably displayed in the presence of poor reflection surface of the obstacle; Capturing target speed reflects the ability of the reverse radar to capture moving objects. The performance requirements of the reverse radar are: accurate measurement, stable measurement, wide range, and fast capture speed. [2] Quality inspection. Follow the instructions for distance testing to see if the radar's response matches the instructions, whether the radar is sensitive, and whether there are any false alarms; Conducting a waterproof test on the probe is crucial for ensuring that the radar can function properly in rainy, snowy, and humid weather. In the southern and northern regions, it is also necessary to test the radar's working conditions in high and low temperatures, with the best reaching -35 ℃ -70 ℃. Beyond this limit, sensitivity is greatly reduced, and even does not work. There are many options for purchasing reverse radars, and car owners can purchase and install them through auto parts stores, Taobao online stores, Baidu search, and other channels, You can also directly purchase and install it in a decoration store. When selecting and installing, pay attention to choosing a large brand and installing it in a large decoration or 4S store, so as to ensure quality and after-sales service. Precautions [3] When selecting a reverse radar, Pay attention to the following four aspects. 1. Function: A fully functional reverse radar should have distance display, audible alarm, area warning, and direction indication. 2. Performance: Performance is mainly considered from the detection range, accuracy, display stability, and target capture speed. 3. Style: The color of the probe should match the color of the vehicle body; Vehicles with wider bumpers should be equipped with products with thinner and larger probes. 4. Service: It is recommended to choose products with a warranty period of more than 2 years)

BMW 6 Series introduce

The BMW 6 Series is a car specially designed by BMW Germany for sophisticated drivers. It was introduced in 1976 and discontinued in 1989. During this period, its sales reached 86000 units, making it the most successful box car in BMW's history After a 14 year hiatus, BMW decided to revive the 6 Series and once again enter this large luxury sports car market, showcasing the core concept of the BMW 6 Series in GT racing, combining the advantages of sports cars and luxury RVs The previous models of BMW's sporty two door cars have also perfectly achieved this integration. In terms of exterior design, the 6 Series maintains the typical dynamic style of BMW Coupe, with a long hood, low roof lines, and front and side skirts giving the car a dynamic and elegant posture. To distinguish it from other models, the headlights, engine cover, radiator grille, and front air vents have all been redesigned. By introducing new elements such as LED brake lights in the tail light design, in addition to greatly reducing reaction time, the size and brightness can be adjusted according to different environments. The BMW v8 engine provides power for the 6 Series. BMW is known for its advanced technological development, and a series of LED brake lights have been introduced. The application of high-tech projects has maintained BMW's leading position in the automotive industry. The 6 Series has also adopted many advanced scientific research achievements. The new 6 Series has a body length of 4820mm and a width of 1800mm, which is even wider than the 5 Series. Such a large body shape will inevitably increase the weight of the body, and excessive body weight will greatly affect the acceleration and handling of the 6 Series. Therefore, BMW has used a large amount of aluminum alloy and composite materials on the body of the 6 Series, In order to achieve the goal of reducing weight, carbon fiber reinforced plastic materials are 50% lighter than steel and 35% lighter than aluminum, which can effectively reduce the weight of the vehicle body. The rigidity is three times that of other materials in the central control area (10 sheets), and the collision resistance and safety are quite good, which has always been an ideal material for the automotive industry. However, due to the lack of stamping equipment, carbon fiber used to be produced manually. BMW has developed a set of stamping equipment with a self weight of 200 tons and a pressure of 1800 tons, which is the world's first mass-produced carbon fiber roof, and has begun trial use on the new 6 series. The 6 series also uses an overhead display (hud) system that is only available on aircraft, which can directly display some important information. Projected onto the windshield of the car, including navigation direction, speed, and active cruise control display. The core functions related to driving in the car are operated through the i-drive controller and buttons attached to the steering wheel, but the i-drive control button is placed on the right side of the gear lever and requires arm extension to reach. Other secondary functions and comfort equipment control are arranged in a distance that is easily accessible to the other (2) cars and front seat passengers, Very convenient. Users can also choose a panoramic glass roof that is much larger than a regular electric sunroof, allowing more sunlight to enter the luxurious interior of the car. Dynamic driving and active steering systems are optional equipment for the 6 Series, which can greatly eliminate the body roll caused by vehicle turning and increase the comfort of passengers inside the car. The active steering system, on the other hand, changes the steering ratio based on the vehicle speed through a stepper motor. At lower speeds, the steering sensitivity increases, and larger wheel turns can be achieved by turning the steering wheel at a smaller angle. This situation is very useful for drivers driving on urban roads or parking and turning around. As the speed increases, the steering becomes more sensitive. Accurate, ensuring driving stability and comfort. The BMW 6 Series engine is equipped with Dynamic Stability Control (DSC) and Dynamic Traction Control (DTC) systems. In addition, the Driving Dynamics Control (DDC) technology used in the BMW M3 and M5 models is also used in the new 6 Series, which is controlled through a "SPORT" button located on the center console The DDC function can increase the sensitivity of the throttle response, improve acceleration ability, and provide a more direct response to the power assisted steering mechanism, thereby increasing the driving pleasure of the driver. In terms of power, there is also the option to choose a sequential manual transmission (SMG), which can be changed by the paddles on the steering wheel or the gear lever. As for the interior, we have always trusted BMW. The 6 Series adheres to BMW's consistent style, perfectly combining luxury and practicality. The bright colors are more in line with its sporty characteristics, and there are multiple configurations to choose from. As a representative of luxury cars, the BMW 6 Series [2] also has many commendable features. In terms of sound configuration, the new BMW 6 Series is equipped with 8 features. A hi fi sound system with speakers, 9 space seats, and 6 CDs create a home theater effect