I make a popular science video and all the emperors learn from it!

[2. Modern means of transportation. 】

[10, boat. 】

[Science popularization is over.] 】

[Start popular science: 11. Electric balance car. 】

[Electric balance car, also known as somatosensory car, thinking car, camera car, etc.] There are two main types in the market: one-wheeled and double-wheeled. 】

【Development Status:】

[As early as 1985, Professor Kazuo Yamato of Neon Country proposed a model of a two-wheeled electric balance car. 】

[It's just that at that time, the two-wheeled electric car model he proposed could only do linear motion. 】

[At the beginning of the 21st century, with the continuous research on two-wheeled electric balance trolleys in various countries, the project has become one of the research hotspots of global robot control technology. 】

[In 2001, Dean Carmen, a famous scientist in the United States, invented a convenient and fast new means of transportation - two-wheeled electric balance car "Segway". 】

[After that, Segway was also favored by the United States army, and it began to move from civilian to military. 】

[In 2002, R&F developed a two-wheeled self-balancing robot Joey that can be remotely controlled by a remote control, and its speed can reach up to 1.5m/s. 】

[In 2003, Anderson and others of the United States developed an extraordinary two-wheeled electric balance car, which can not only walk on flat roads, but also adapt to rugged mountain roads, and the invention was awarded the best robot of the quarter by the United States Space Administration in May 2003. 】

【......】

【Development prospects:】

[Life is developing in the direction of intelligence and convenience, and the only 960-wheel self-balancing car conforms to this trend, conforms to the trend of the times, and has good development prospects. 】

[Compared with other means of transportation, the most unique feature of the balance car is energy saving and environmental protection. 】

[Today, global warming will bring catastrophe to the earth, and one of the main culprits of temperature warming is a large amount of industrial exhaust emissions. 】

[The emission of automobile exhaust gases in vehicles is also one of the important reasons. 】

[Another crisis in today's world is the energy crisis, and it is an inevitable trend for energy-saving and environmentally friendly vehicles to replace the traditional, providing a broad development space for the development of balance vehicles. 】

[Continuously explore the "place of use" of intelligent transportation machines to lead a portable and efficient life. 】

[Improve relevant traffic laws and regulations to provide protection for balance vehicles on the road.] 】

【Technical Principle:】

[The principle of operation is mainly based on a basic principle called "dynamic stability", that is, the ability of the vehicle itself to self-balance. The built-in precision solid-state gyroscope determines the posture of the car body, calculates the appropriate instructions through a sophisticated and high-speed central microprocessor, and drives the motor to achieve a balanced effect. 】

[Electric balance car system often uses brushed DC motor or brushless DC motor. 】

[The brush motor is characterized by fast starting, sensitive braking, smooth speed regulation in a wide range, simple control circuit, suitable for general power equipment, can work continuously for 5000 hours, conventional life (BFBB) life of two to three years, but continuous work for 1000 hours, need to replace the carbon brush. 】

[Brushless motor is the whole of the motor and the driver, no need to replace the brush, it is a mechatronics equipment, it can run continuously for 20,000 hours, the conventional life is seven to ten years, the digital frequency conversion control speed regulation is easier, the power consumption is one-third of the brush motor, but the cost is high, the requirements for control accuracy are relatively high, and it is suitable for equipment with high requirements for speed control. 】

[In the electric balance car system, to obtain acceleration and angular velocity information, the acceleration sensor can convert the acceleration generated in the human body movement into a signal for effective processing, so as to judge the action made by the human body, the gyroscope can convert the rotation angular velocity of the electric balance car into a signal, and the rotation angular velocity integral processing corresponds to the tilt angle of the balance car, so as to control the balance of the electric balance car. 】

【Features of Electric Balance Scooter:】

[Green environmental protection. Electric vehicles are powered by batteries, which are completely pollution-free to the environment, absolutely green and environmentally friendly, and can be recharged and used repeatedly. Moreover, the operation efficiency of the motor is high, the noise is low and the efficiency is high, so it not only reduces noise pollution, but also saves energy. 】

[The turning radius is very small, basically close to zero.] This makes it ideal for use in small spaces. For example: large shopping malls, sheep intestine lanes, talent markets, workshops, etc. 】

[No brake system, the angular velocity signal is detected by the gyroscope, the angle signal is detected by the accelerometer, and then the accurate angle signal of the two-wheeled electric balance car is fused, and finally transmitted to the single-chip microcomputer, so that the PWM module of the single-chip microcomputer controls the forward and reverse rotation of the motor of the two-wheeled electric balance car. 】

[This not only avoids the waste of energy, but also avoids the wear and tear of the brake pads.] 】

[Traditional cars may also have bad brakes, but this situation is not at all necessary on two-wheeled electric balance vehicles. 】

[The control is extremely convenient, only through the forward and backward tilt of the body, you can change the forward and backward of the two-wheeled electric balance car, as well as the running speed, which is much more convenient and flexible than the traditional car. 】

【......】

【Technical Advantages:】

Compared with traditional means of transportation, electric self-balancing vehicles have the following technical advantages. 】

[(1) Pure electric drive, zero emission, environmental protection and pollution-free;]

[(2) Intelligent control, flexible control, automatic balance using the principle of inverted pendulum, gravity induction, superior stability;]

[(3) Flexible movement, stable steering, electric two-wheeled balance bike has zero turning radius, can move dexterously in narrow spaces;]

[(4) Small size, can be used by public transportation, does not occupy space, braking sensitive, adjust the center of gravity of the human body before and after acceleration and deceleration;]

[(5) Modular structure, easy to maintain, novel modeling and control mode, expandable self-balancing platform;]

[(6) Simple driving, no special training is required, only a little proficiency can be controlled freely. 】

[In addition, this seemingly simple means of transportation involves many fields of technology, including: mechanics, microcomputer technology, control technology, sensor technology, motor drive technology, battery and material technology, etc., with a wide range of research background, application value and industrial prospects. 】

[Driving method:] (Read the violent novel, just go to the Feilu novel network!)

[Similar to the body's own balance system, when the body's center of gravity leans forward, in order to ensure balance, it needs to move forward, and the same is true when the center of gravity leans back. 】

[At the same time, the steering of the electric balance car is realized by the handle grip and the telescopic lever, and the swing handle grip will be connected with the telescopic lever to produce a speed difference between the left and right wheels of the vehicle (for example, when the telescopic lever swings to the left, the speed of the right wheel will be faster than the left wheel), so as to achieve the effect of steering. 】

[The energy source of the vehicle is a lithium battery pack, which can guarantee a range of 20-70km and a top speed of 20km per hour on a single charge. 】

[When riding, point the steering lever in the direction you need to go, and the body will drive in the direction you are pointing.] When the steering lever is in the middle of the vehicle, the system will drive straight ahead. When turning the steering stick, the system will control the speed difference between the left and right sides accordingly to achieve steering, so that the body will follow the direction of the direction of the steering stick tilt, and you will get a better steering experience. 】

[Hint: Electric balance scooters are not considered a legal means of transportation in theory.] 】

[The use of electric balance bikes, scooters and other equipment as a means of transportation on the road will face the detention of the equipment and a fine of 200 yuan.] 】

[In addition, the electric balance car does not have a handle to control the direction, and an emergency situation may cause the driver to be injured.] 】

【......】

[Please see a tutorial video of the electric self-balancing scooter below.] 】

The text in the light curtain is replaced by a video.

The ancients were directly stunned when they saw the electric balance car.

I can't help but sigh on the street.

"Oh my God! this thing has no handles, no stands, no seats, just two wheels lined up sideways, and it's considered a means of transportation?"

"It's really bizarre! I can still accept the bicycle, it looks like a car, but what the hell is an electric balance bike!?"

"I was shocked, and future generations can come up with any strange things. "

"Against the sky! this thing can really move..."

"I don't understand, I don't understand at all, how do you think it stays steady??"

“..."

At the same time, all the emperors were surprised.