Seeing eye PDC

Beginner drivers are experiencing problems with parking, even if you sit behind the wheel of a compact car. A sense of size comes with time, but there are exceptions where a person can not "squeeze" on microcars to full place from just left a huge SUV. You can, of course, each time to ask passers-by or passengers to execute the play called "Turn where I show, no, not there, and vice versa." But the desire for independence with the support of modern technologies hath revealed in the light of mute assistant, who will impartially suggest which side of the obstacle and how many millimeters is left up to the curb. Parktronic - this miracle of technology, who do not care how much time will be spent on overcoming the 20 cm All he knows how - to determine the distance to obstacles and alert the driver about it. Generally, Parktronic - is the name of the parking assistance system, which long ago established for automobiles Mercedes. Initially, an alternative to it was not so much, so the name eventually acquired a nominal status. Parking sensors, located on the rear bumper, the obstruction using ultrasonic signals. They are connected to the rear lights and activated, respectively, after the reverse gear. Radars on the front bumper start to work after clicking on the specially bred button, or after repeated use of the brake pedal at low speed. The signal from the ultrasonic sonar transmits information about the approaching object at the level of the bumper on a special display, all of the torpedo. The situation near the sensor is in the form of images on the LCD screen or through a beeper in the form of sounds of different volume. The sensor is triggered at a distance from 1,5 to 2 meters. Depending on the wishes and the size of the purse, the market can pick up from the budget, but not very useful Parking assistance to doroguschy, but also questionable usefulness PDC. In the first case, a driver in possession of two sensors in the bumper, a couple of dead zones between them and the small width of the signal coverage. In the second case, a fancy monitor shows the driver a colorful picture with camera mounted behind, but to send the machine in the desired direction will only be those who do not have problems with spatial orientation. Better selling in the market system for a snug parking are at least four sensors per bumper. The distance between them is about 30 cm, they do not slip past even a thin iron rod. There are also more expensive Parktronic, a kit which includes 8 or more sensors - they feel the approach to foreign bodies and front and side, and if desired, from the roof. The radar is mounted to the bumper or license plate with glue or bolt, and rarely have to make a hole and embedded sensors. Communication with the device indicate it holds through the electronic control unit connected to the wiring a car and there are alternatives to help with parking, for example, special tapes with sensitive elements which are mounted on the inner side of the bumper. They respond to changes in capacitance entrusted to them space. And it is an inexpensive option that is suitable only for bodies minivan and SUV - the mirror "third eye". Due to its convexity, it can be seen through the space around the rear wheels. Before installing the PDC is worth considering and some minuses. In the low-cost systems, parking assistance radars are only black and gray. For painting or custom sensor to a color bumpers will have to pay. Soft objects absorb ultrasound, and smooth round surfaces deflect the signal in the opposite direction. In bad weather sensors can be covered with ice or a dense layer of dirt that will lead to confusion indicator - it will constantly warn about an emergency proximity to foreign objects. Ultrasound does not warn about the abrupt slopes and pits, lying on the road sharp pieces and spilled oil. SUV owners with a fixed on the rear door spare wheel, as well as vehicles with towbar will restrict Kit with two sensors, as he may deem these accessories an obstacle. The system turns on only when reversing, it will not work when backlash back in neutral. Variation in prices for parking assistance system is quite large: from 3000 rubles per insensitive tape on the inside of the bumper, continuing to 9000 rubles for the 4 sensors on the rear bumper, and ending about 25,000 rubles a video camera and LCD display. Calculate the optimal value of PDC is easy: it should not exceed two-fold repair to painting or replacement bumper. Text: Olga Zabelkina.