If you want to evaluate the most collapsing moment in your life, what will you think?
For the machine brother, it should be a critical moment when the battery is out of power.
For example, when you come home in the summer, you want to turn on the air conditioner immediately and enjoy it.
As a result, the air conditioner remote control is out of power.
Or maybe the long-awaited ball game is about to begin.
As a result, the TV remote control is dead.
This is not the most devastating, and what is even more tragic is that there is no dry battery at home.
Some friends may say, isn't it good to use an infrared feature phone?
Indeed, but the machine brother has recently seen a more radical solution.
Samsung released a black technology remote control at CES 2022.
According to Samsung, this new remote control can be charged with WiFi.
Yes, the WiFi at the bottom of the demand pyramid.
Is wireless charging really going to happen?
The machine brother read the detailed introduction, in fact, it is not so exaggerated.
Samsung launched a remote control for solar charging last year.
This year's new remote control retains solar charging and adds WiFi charging.
Judging from the knowledge learned in the second grade of ji brother primary school, its essence is still an electromagnetic induction.
Electromagnetic wave signals also have energy, including WiFi signals, mobile phone network signals, and so on.
This energy can be received with a special antenna.
Some netizens feel that WiFi charging is more reliable than solar charging.
After all, the remote control is not to say that the sun is basking, and even the opportunity to see the light may not be too much.
WiFi is everywhere, as long as it is indoors, you can sweep out a dozen or twenty at will.
This new remote control mainly receives 2.4G WiFi signals and converts them into electrical charging.
Is the WiFi signal strong enough not to run out of power? Then I have selected all the routers.
At this point, putting the remote control in it should not be short of power.
Jokes aside, but WiFi charging really probably isn't enough.
The machine brother checked that the maximum transmission power of the civil router was only 10mW.
And now the best antenna has an energy conversion rate of 40%.
Even if the signal transmitted by the router is all received by the remote control, it is only 4mW.
"Five blessings and one peace" is 1250 times its size.
It is certainly impossible to use it on mobile phones, so let's use it for low-power devices.
In fact, there are quite a few novel electronic device charging technologies.
The machine brother is looking forward to it.
For example, this one, kinetic energy charging.
In fact, to store the energy of human movement, this technology has matured on mechanical watches.
Now there are smart watches that use kinetic energy to charge, and the following SEQUENT WATCH is.
The principle machine brother is not much introduced, let's review the cutting magnetic line on the line.
However, smart watches that claim to never need to be charged are also conditional.
Turn on the high energy consumption functions such as heart rate monitoring and GPS, and it will definitely not be able to stand up.
Another troublesome problem is that the amount of exercise per person on a daily basis varies greatly.
Like the dead house of the machine brother, the electricity generated by the movement may not be enough for the time display.
The machine brother also saw a kinetic charging treasure on the crowdfunding website.
According to the official version, this charging treasure is tied to the place where the body swings the most.
Where it can be tied up specifically, everyone can imagine for themselves.
In short, the data given is that the electricity generated by walking 10,000 steps can be used by smart phones for 3 hours.
Ah this, the machine brother walked 10,000 steps to spend more than 3 hours.
So ah, this kinetic energy charging, maturity is mature, but the amount of exercise requirements are too high, can dissuade a large number of people.
It is still far from the perfect charging method in the mind of the machine brother.
Is there a more insensible way to charge it?
There really is, and it is still a bit magical to say, called body temperature charging.
The first time the brother heard about this technology, he thought it was a conceptual technology.
Unexpectedly, there are already actual products.
It's still a watch, the PowerWatch X, and it doesn't have any fancy features.
However, as long as the person is not cold, it can be charged by temperature all the time.
It is said that the body temperature is charged, but in fact, it depends on the temperature difference.
Different metals are connected together and placed at different temperatures to generate an electric current.
In fact, it's not just body temperature, as long as the temperature difference is enough, it can generate electricity.
The machine brother had a bold idea.
Is it possible to convert the heat of the mobile phone chip into electrical energy, and then charge the mobile phone in turn.
As long as the future chip is hot enough, will it be possible to make a "perpetual mobile phone" one day?
How big is the power of body temperature charging, the machine brother also checked.
When the difference between body temperature and ambient temperature is about 15 degrees Celsius, the maximum power generated is the milliwatt level.
The larger the temperature difference, the larger the area, the more electrical energy can be generated.
It's just that the machine brother has a question, if you live in the tropics, the temperature of the year is not much lower than the body temperature, is it to say goodbye to this technology.
In addition to the above, there is also a sound charging technology that is also quite magical.
As we all know, speakers emit sound that consumes power.
In fact, the reverse is also possible, and the sound can also be converted into electrical energy to charge the device.
As early as 2014, Nokia worked with the scientific research team to make a prototype product of sound charging.
It is said that the use of daily background noise such as vehicles and music can generate a voltage of 5 volts to charge the mobile phone.
The principle is to use the piezoelectric effect of the material, to say that the human word is that the sound wave vibration gives it pressure and it has electricity.
The device that discharges the ignition in the lighter relies on the piezoelectric effect.
Half a year ago, a sound charging patent applied for by Xiaomi was published.
Judging from the abstract, it is the same thing.
It is to convert the vibration of sound into electrical energy, store it and then charge the device.
But I haven't seen anything in real way yet.
In fact, it is not surprising that some people have long imagined this charging method, and finally they have been dissuaded by the power.
According to the sound of 40-60dB one meter away from the mobile phone, regardless of the conversion rate, it is only micro-wattage.
It takes 462.8 days to fill a 4000mAh phone with this energy.
That's right, it's days, not hours.
The rest, don't need to say more about the machine brother.
The charging technology on mobile phones has indeed improved by leaps and bounds.
However, in the eyes of the machine brother, high-power fast charging only alleviates the pain point of forgetting to charge.
Doesn't really fix it.
The perfect charging technology imagined in the machine brother's mind should be completely insensitive.
The technologies mentioned earlier, WiFi charging, kinetic energy charging, body temperature charging, and sound charging.
Their thinking is actually quite correct, basically collecting energy in the environment.
But it is clear that whether these technologies are mature or not, the biggest problem is that the power is too low.
It's also easy to figure out if the energy in the environment is big enough to charge your phone.
That human body should have been unable to bear it a long time ago.
In short, these courageous technologies still have a little room for imagination in wearable, low-power devices.
I only hope that these wearable devices will not take the old road of high power consumption and high heat.
Let the machine brother experience it in his lifetime.