The operation principle of electric balance vehicle is mainly based on a kind of "dynamic stability"（ Dynamic Stabilization ）The gyroscope and acceleration sensor inside the car body are used to detect the change of car body attitude, The servo control system is used to accurately drive the motor for corresponding adjustment to maintain the balance of the system. The rider only needs to change the angle of his body to lean forward or backward, and the balance car can move forward or backward according to the tilt direction.
EVA Self balanced electric wheelbarrow ( Hereinafter referred to as fast wheel ) It is a product with LED The display screen and lights have a variety of safety protection designs. It is an intelligent electric wheelbarrow with suspension protection, low power protection, overspeed protection and tilt protection. In case of emergency, it will automatically start the protection program, such as overspeed alarm, and the rocker will automatically tilt to force the cyclists to slow down, so as to ensure driving safety. At the same time, the fast wheel can also be matched with the corresponding APP Modify vehicle parameters, such as driving mode, update firmware, view training videos, find nearby riders, etc. The function of firmware upgrade is to repair some bug Or program optimization, we would like to have new functions to experience.
Understand from the structure EVA Self balancing wheelbarrow, the structural drawing is as follows:
Whether it is an electric bicycle or an electric unicycle, the main common problem is battery durability , Effective travel distance. According to the information found, EVA The lithium battery uses the power lithium battery cell from Sony and Samsung, which is of the same level as the lithium battery cell used by Tesla, 1-2 It can be fully charged in an hour.
Accessories include power cord, extension nozzle, hexagon wrench, user manual, maintenance card and auxiliary belt.
The auxiliary wheel is to be purchased separately. Let me show you the appearance of the auxiliary wheel.
Close up of the plug of the power supply, three hole anti dazzle design,
This auxiliary belt is useful for me at the beginning of practice, because I am afraid of breaking the machine. When I feel unstable or the equipment has fallen, I immediately lift the auxiliary belt pulley for a circle to prevent the equipment from hitting me.
First invite the main character out, Fast Wheel Fast wheel, main color black and white. Personally, I think black and red are a good match. The fuselage is made of plastic material, which is a bit frosty and anti-skid.
Take a front and back photo. Can you determine which is the front and which is the back at the first sight?
Is it important to distinguish front from back? Doesn't it matter? It doesn't matter. In any case, it's either forward or backward. Backward is also forward, and forward is also backward. I didn't know that I had been using backwards until I learned it, just because I didn't read the instructions and was busy looking for videos for beginners online.
The front is on the right, and the rear is on the left. Power switch ( Red button ) One end is the rear of the car, and the charging end is the front of the car.
The lamp is 1W 's white light highlights LED Beads, the preset lighting effect in the dark environment at night is like this
The upgrade status is shown as follows
Charging interface , Do not use force when inserting. If you feel that there is resistance, please rotate and try again.
The ring of the charging interface will be attached after being plugged into the power supply
The tyres are Zhengxin special tyres for electric vehicles.
Partial close-up of tire
Metal pedals on both sides, after all, must bear 120KG The weight of
The indicator on the power supply will change from red to light green from charging to full charge
Now we begin to enter the experience phase. The software version is from EVA10 Upgraded to EVA11 。
Actual boarding experience
Both beginners and experts should pay attention to safety when playing electric wheelbarrow. For our beginners, don't rush to get on the bus, first understand the product features, precautions, step by step. When beginners begin to use self balancing electric wheelbarrow, they should try to wear comfortable casual or sports clothes, and wear flat shoes. Open toe shoes are prohibited ! When practicing, try to carry the self balancing electric unicycle to an open place with few people and cars, and ensure that the ground is flat and free of obvious obstacles.
Fast wheel self balancing electric wheelbarrow Experience exchange
What I remind you is that you should first protect the knee, ankle and the inner side of the lower leg that contact the unicycle. It is better to wear all the equipment with knee protection, leg protection and head protection for safety. During the whole practice, my hand was only scratched because the low power unicycle suddenly sped out and I caught it with my hands.
I finally chose foam for the part near the calf, which is very useful. I am thin, and there is no meat on my legs. After the first day of practice, I felt some pain near the unicycle, especially the inner side of the knee joint. After taking a bath, I saw that the parts near the knee were red, so this is a key protection area.
EVA Functional experience
one Battery prompt Actual result: Yes and working normally
Battery below 20% When the dot matrix screen starts flashing; Battery below 5% An alarm will sound and the foot pedal will slowly lift. At this time, pay attention to safety, try to close the equipment and carry it away.
two Heeling protection Actual result: Yes and working normally
When the car body inclines more than forty If the equipment falls down, the motor will stop rotating, and an alarm will sound, and the dot matrix display will show X The icon of dumping error. To remove the protection status, you only need to straighten the car body. If it is still not restored after straightening, you can try to turn off the power and restart the machine. The continuous alarm is about 20s After that, it will shut down automatically.
three Speed limit protection Actual result: Yes and working normally
EVA There are two modes of cycling: child mode and adult mode. When the speed of child mode and adult mode respectively reaches 8km/h and 14km/h The front end of the pedal will slowly rise with the increase of speed. When the speed reaches 12km/h and 18km/h , the lifting angle will be close to fifteen The ankle can obviously feel the change, and there will be a certain sense of pressure.
four floodlight Actual result: Yes and working normally
In the power on cycling mode, you can double-click the power button (0.5 second / second ) The lamp can be turned on or off, and can also be used APP Turn on or off the lights
five Forced shutdown Actual result: Yes and working normally
It mainly deals with some cases that cannot be restored to normal, and long press the power key 5s It can be forced to shut down from left to right.
six Downhill and climbing test Actual result: the downhill has the function of automatic deceleration, twenty The climbing is relatively smooth
APP Experience
Download, install, and register.
The software functions are not very perfect, so we will only experience some functions about fast wheel parameter setting.
First turn on the power supply of the fast wheel and click APP Button in the middle below the main page “K” , enter the following screen
The picture of Bluetooth pairing when charging and the picture of Bluetooth pairing after power on
But related to the use of fast wheels Settings are entered from this page
one Firmware update
After the manual download is completed, it will be updated automatically. After the update is completed, it needs to be powered on manually.
two Bluetooth Settings
It is mainly used for matching with the fast wheel
three Cycling mode It can be divided into child mode and adult mode. The main difference is speed. After the vehicle mode is modified, restart the vehicle to take effect.
from APP When the terminal sees the highest speed, it can only reach 13.9km/h At this time, the pedal has been tilted.
four We can adjust the light from APP Turn on the light, or double-click in cycling mode (0.5 second / second ) On key, turn on or off the lights. The default light value is the lowest.
Selfie video
The following is a real fight I took on the road, taking a selfie pole.
Fast wheel self balancing wheelbarrow Go on the road
Self filming video of fast wheel self balancing vehicle on the road
Fast wheel self balancing wheelbarrow Windward driving experience on bumpy roads
Fast wheel self balancing wheelbarrow turn a corner
Fast wheel self balancing vehicle Turning downhill and climbing
Fast wheel self balancing wheelbarrow Upwind bumpy road test
Fast wheel self balancing wheelbarrow Bumpy road experience ( clear )
Basically, at this stage, you can take it to the shopping mall, take it to and from work, or even go to places with many people to play. There is no big problem in the skill, proficiency and psychological quality of playing with cars, and there will be no chance of embarrassment. You can wear your favorite clothes in leather shoes and appear in public.
Experience summary
Let's talk about the advantages first
one Fashionable and cool appearance design, the whole body has no screw hole design
two The weight is relatively light, so it is convenient to carry the subway bus
three The shell is solid and resistant to falling
four APP Powerful, simple and easy to use interface design, many functions can be achieved through applications..
five The balance control algorithm has outstanding effect and quick response, indicating the sense of safety in riding.
six Fast charging speed and large battery capacity
Let's talk about some suggestions on products,
one Holding the device and pressing the power supply, the wheels will speed up and spin after startup, and suddenly speed up when standing, which is easy to hurt
two The plastic shell body is not easy to clean
three When new firmware is available APP The client will not receive the notification of the new version update, APP The switch on the Bluetooth settings page does not work
four Recommend replacing a larger tire
The current tyres are a little small, 60kg The above people can feel some shaking when driving on the road
five It is recommended to add initialization settings, mainly to restore the initial speed
six It is suggested that some rubber materials should be used on both sides of the fast wheel to contact the lower leg. One is to reduce the strength of contact with the leg, and the other is to reduce the damage caused by the fast wheel falling.
seven It is recommended that the pedal automatically decelerates and gradually returns to a stable state after being tilted
When the battery is low or the speed reaches a certain value, the pedal will lift up and press the ankle to a certain extent. If the reaction is slow, there will always be speed and momentum.
eight It is recommended to add shock absorption to the fast wheel
The form can obviously feel the vibration on the brick surface or slightly potholed road surface. If you ride fast, you may fall down due to small bumps.
nine It is recommended that the battery can be replaced
As an electric device, the battery should be replaceable, which is also a concern of pedestrians.
For any kind of cycling equipment, it is the first and most important thing to ensure user safety. The first thing to be sure is that, EVA The electric wheelbarrow is practical and effective in terms of safety protection measures, whether it is suspension protection, low power protection, overspeed protection or tilt protection, which, to a certain extent, reduces the potential safety hazards when we use it and eliminates some security worries; The function of downhill automatic deceleration can prevent falling due to too fast speed ;LED The lighting design allows us to avoid the embarrassment of riding in the dark; Another point is the weight of the product. Compared with other products, the weight is reduced 30% Around, it brings a lot of convenience for carrying out.
