Intelligent road liberation of electric vehicles to improve vehicle transportation efficiency

[ Instrument network instrument research and development ] At present, electric vehicles either rely on two upturned "long braids" or are powered by their own rechargeable batteries. The driving path of the former is restricted, and the latter not only takes time to charge, but also consumes energy due to the weight of the battery. In response to the problems of these two types of trams, the Israeli start-up company ElectReon Wireless has developed a unique solution: paving smart roads that can be wirelessly charged, allowing cars with a small number of batteries to be on this road Drive while charging.

The intelligent road of Electrolux Wireless includes a number of copper coils buried horizontally in the direction of the road 8 cm below the road asphalt pavement, and the coils are connected to the control management unit. The function of the coil is to wirelessly transmit electrical energy to the energy receiver under the vehicle to provide the required power for battery charging. The size and energy consumption of the vehicle determine the number of receivers. The entire system can extend the driving range of the car, and because of the use of a smaller capacity battery, which can accommodate more passengers and improve transportation efficiency.

"Smart road" can be defined as: a road facility that is composed of specific structural materials, perception networks, information centers, communication networks, and energy systems, and has intelligent capabilities such as active perception, automatic discrimination, autonomous adaptation, dynamic interaction, and continuous energy supply. . Compared with traditional roads, smart roads should effectively extend road life, improve road performance, reduce safety risks, and improve service quality.

The purpose of Smart Road is to realize the above-mentioned smart functions. A variety of technologies can be used in the development and use of smart roads, including smart materials, distributed optical fibers, smart films, piezoelectric devices, and traditional sensors.

Distributed optical fiber sensor:

Distributed optical fiber sensor is a sensor that uses unique distributed optical fiber detection technology to measure or monitor the spatial distribution and time-varying information along the optical fiber transmission path. It arranges the sensing fiber along the field, and can obtain the spatial distribution of the measured field and the change information over time at the same time, which is attractive for many industrial applications.

Piezoelectric device:

A device made of the piezoelectric effect of the material (see quartz crystal). The structure of most piezoelectric devices consists of electrodes, piezoelectric sheets, brackets and shells. The piezoelectric sheet can be in the shape of a round sheet, a long sheet, a rod, a cylinder, and the like. The application range of piezoelectric devices is very wide. When the frequency of the electrical signal is close to the natural frequency of the piezoelectric sheet, the piezoelectric device generates mechanical resonance by the inverse piezoelectric effect. The resonance frequency is mainly determined by the size and shape of the piezoelectric sheet.

sensor:

A sensor (English name: transducer/sensor) is a detection device that can sense the information being measured, and can transform the sensed information into electrical signals or other required forms of information output according to a certain rule to meet the information Requirements for transmission, processing, storage, display, recording and control.

The characteristics of sensors include: miniaturization, digitization, intelligence, multifunction, systemization, and networking. It is the first link to realize automatic detection and automatic control. The existence and development of sensors give objects the senses of touch, taste and smell, and make objects slowly become alive. According to its basic perception function, it is usually divided into ten categories: heat sensitive components, photosensitive components, gas sensitive components, force sensitive components, magnetic sensitive components, humidity sensitive components, acoustic components, radiation sensitive components, color sensitive components and taste sensitive components. .

Source: Science and Technology Daily, Encyclopedia, "Engineering"