Whether it is standard or modified, as the most beautiful type of lights, LED lights are slowly gaining popularity. From Guangben Ling to the new lion run, to the Dongfeng Fengshen new S30 and other independent brand models, LED lights that were previously available in mid- to high-end models have begun to spread to low-end models.
Compared with traditional halogen lamps, LED lamps are more energy-efficient, environmentally friendly, and smaller in size, and they are flexible and easy to arrange, and can easily create a front-facing shape of a car. However, although LED lights are more dazzling and cool, their maintenance costs are also quite high compared to traditional lights.
LED lights become the new favorite of young car owners
"The development of LED daytime running lights is actually for some years, but the models sold at the beginning are relatively high in price and not so popular." Xu Fan, a car modification enthusiast, said that daytime driving such as BMW and Passat The lights are relatively good design, Audi is also called "lighting factory" by the riders, "eagle eye", "sickle", "lightning" are familiar LED lights design.
“In addition to being cool, daytime running lights can also ensure safe driving.†Xu Fan said that vehicles equipped with daytime running lights can be identified by the opposite vehicle in the case of daylight glare or poor visibility in rainy and foggy days. . “As a safety device, many countries in Europe have mandated manufacturers to match daytime running lights.â€
However, in Xu Fan's view, the use of LED daytime running lights is now catching up with the trend, and not a leading trend. "If you want to lead the trend, you should replace the entire set of lights with LED lights, including brake lights, headlights, turn signals, daytime running lights, etc." Xu Fan said, it is best to match BMW "Angel Eye" The lights are so dazzling.
Guo Bo, the auto parts market of Hangzhou Auto City, said that LED lights are not only dazzling, but the brightness of all LED headlights even exceeds that of xenon headlights. The reaction speed is fast, but the price is relatively high, and the price ranges from 30,000 to 80,000. The original car configuration is only a few models of several luxury brands such as Audi and Mercedes, and there are fewer enthusiasts in the later stage.
Once damaged, the replacement fee is up to thousands
Although the LED lights are dazzling, the high maintenance cost of the LEDs makes the owners call for "injury."
Recently, Hangzhou Cheyou Xiaolu is annoyed for the maintenance cost of his car BMW 3 series. Xiao Lu suddenly found out that the turn signal of the car was broken a few days ago. I went to the 4S shop for repair and found that the bulb was burned out. At the beginning, Xiao Lu didn't take it for granted. He thought that changing a light bulb would cost tens of dollars. "At that time, I thought I could get up to 200 yuan, but who would think, 4S shop told him that the repair cost was nearly 2,000 yuan." Xiao Lu annoyed He said that the maintenance worker told him that the LED turn signal could not be replaced by the lamp alone. If it is broken, the entire assembly must be replaced. There is no other way.
The new crown owner, Mr. Meng, has had the same experience. "At the time, the LED brake lights did not light up. When I went to the 4S shop, I asked for the entire assembly. The cost was more than 1,500 yuan." Mr. Meng said inexplicably, he could not think of the price of the repair shop outside the same amount of more than 1,000 yuan. Think of the original old car to change a halogen bulb as long as tens of dollars, Mr. Meng said "can not afford to hurt."
"It's still good to change the turn signal or brake light. If it is a full LED headlight, the cost is 10,000 yuan." A small Japanese 4S shop circuit repairer Fu Xiaoding said that the replacement cost of an LED lamp assembly like the Audi A6L is close. 12,000 yuan.
Maintenance and replacement of LED lights pay attention to timing
"The design and manufacturing concept of automotive electrical equipment such as lighting equipment has become more and more integrated, such as LED lights, air conditioners, CDs, etc." Xiao Ding said that the supply of this part of the accessories in the market is also developing towards integration.
Xiao Ding said that compared with traditional halogen bulbs, LED lamps theoretically have a longer service life and are more beautiful, but because the normal operating temperature of LED lamps is below 60 ° C, and the car headlights are in use, or high temperature exposure Underneath, the temperature around the LED lamp will become very high, and the heat dissipation is not very fast. Once the temperature exceeds 60 °C, the operation of the LED lamp is not particularly stable, and even burns. "For the damage of most LED lights, all the lights will not be bright at once. Considering the high replacement cost of LED lights, the owner can replace the number of fault lights to affect the use effect, thus reducing maintenance costs. â€
The biggest factor affecting the lighting efficiency and life of LED cars is temperature. Therefore, owners who want to modify LED lights are recommended to choose LED lamps with good thermal conductivity, and pay attention to the heat dissipation of the surrounding environment of LED lamps in the future.
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The Ultrasonic Transducer is a kind of transducer that converts the ultrasonic signal into electric signal, or vice versa. Ultrasound transmitter and receiver is a transducer that can transmit and receive ultrasound. Ultrasound sensor is a kind of sensor, in essence, it is also a transmitter and receiver. The working principle of this kind of equipment is similar to that of radar and sonar. Active ultrasonic sensors can emit and receive reflected waves, and determine the distance of the target by measuring the time interval between transmission and reception. Passive Ultrasonic Sensor is actually a microphone that can convert ultrasonic signal into electrical signal.
According to the working principle and materials used, the ultrasonic transducer has Piezoelectric Transducer, electrostatic transducer (capacitive transducer), magnetostrictive transducer, electromagnetic acoustic transducer, mechanical transducer and other types [1].
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