V2x technology refers to vehicle-mounted wireless communication technology.
The so-called V2X, just like the popular B2B and B2C, means vehicle to everything, that is, information exchange between vehicles and the outside world. By integrating GPS navigation technology, vehicle-to-vehicle communication technology, wireless communication and remote sensing technology, the Internet of Vehicles has established a new development direction of automobile technology and realized the compatibility of manual driving and automatic driving.
Simply put, in the automatic driving mode, the vehicle equipped with the system can automatically choose the best driving route through the analysis of real-time traffic information, thus greatly alleviating traffic congestion. In addition, through the use of on-board sensors and camera systems, we can also perceive the surrounding environment and make rapid adjustments, thus achieving "zero traffic accidents". For example, pedestrians who suddenly appear can automatically slow down to a safe speed or stop.
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The first wireless telephone conversation in the world appeared in 1880, when the optical telephone was used. The optical telephone was invented by Bell and Charles Sumner Tiante and patented.
Optical phones transmit sound signals by modulating light beams. At that time, there was no equipment to provide electricity, and even science fiction did not mention lasers. Their invention was of no practical value at that time, and the effect of the call would be limited by sunshine and weather. Optical telephone and free space optical communication are unified, and there can be no object between transmitters to block the light beam. Decades later, optical telephone was applied to the field of military communication.
Early work
In 1878, David e Hughes used a transmitter to transmit hundreds of meters of radio. Maxwell's electromagnetic theory was not known to the world at that time, so contemporary scientists regarded this invention as the result of induction. 1885, Thomas Edison used a vibrator magnet as the transmission of induction. 1888, Edison deployed the signal transmission system of Hay Valley Railway, 189 1 year, and he obtained the radio patent using inductance (US patent 465,971).
1888, heinrich hertz demonstrated the existence of electromagnetic waves, which became the basis of most wireless technologies later. Hertz proved that electromagnetic waves can travel in a straight line in space and can be received by experimental equipment, but he did not continue other related experiments. Jagdish Chandra Bos developed an early radio detection equipment at that time, which also helped to understand the characteristics of electromagnetic waves with wavelengths within a few centimeters.
radio
"Wireless" originally refers to the receiver of radio, or transceiver (equipment that can be used for both transmitting and receiving), and similar equipment has been applied as early as the era of wireless telegraph. At present, the word "wireless" refers to modern wireless communication, such as cellular network and wireless communication. The word "wireless" also refers to any application that can be carried out without wires, such as "wireless remote control" and "wireless energy conversion", regardless of whether the actually applied technology is radio, infrared or ultrasonic.
Guillermo Marconi and karl braun won the 1909 Nobel Prize in Physics for their contributions to Wireless Telegraph.