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)

Mercedes-Benz E-Class introduce

Mercedes Benz E-Class, an automotive brand. Beijing Mercedes Benz, with numerous innovative technologies, adopts a brand new six cylinder engine and a 7-speed automatic transmission. It has become the standard for high-end executive sedans in terms of vehicle safety, comfort, and handling. It achieves a good balance in size, performance, and price. The appearance is atmospheric and stable, and driving and riding are very comfortable, suitable for both business and household use. It has low wind noise, good sealing, and good sound insulation, The acceleration is sharp, the braking is strong, the sound effect is good, the air conditioning is heated and cooled quickly, and the luggage compartment is large. The 2014 Mercedes Benz E has undergone many upgrades and improvements, including its monocular front headlights. This headlight does not follow the four eye headlight design, but uses LED lights and dual xenon headlights. The new intake grille has also been adjusted to accommodate the new headlights, and the 2014 Mercedes Benz E also adopts a brand new engine hood The concise and smooth appearance, luxurious and spacious body, and comprehensive and thoughtful system design of the new Mercedes Benz E-Class will definitely satisfy consumers. The equipment of the new Mercedes Benz E-Class includes a CDI diesel engine, which can provide amazing 349 horsepower and -391, lb ft torque power. All Mercedes Benz E-Class equipment includes an electronic controlled automatic transmission system with 5 speeds, and is equipped with a driver adjustable transmission logic circuit and a selectable manual transmission controller, 6-speed manual transmission, standard window briefcase and state-of-the-art electronic assistance system. Standard equipment also includes anti-theft alarm system, full leather seats, TeleAid automatic call system for emergency and quick contact, dual air controller, front seats adjustable in 10 directions, electric canopy, collapsible steering column, electric windows and door locks, route controller, AM/FM stereo tape, and 16 inch alloy wheels