1, so many wireless sensors must be able to power themselves. Harvesting energy from the surrounding environment has become the preferred solution, or increasing the capacity of rechargeable storage devices to extend the interval between battery changes without even having to replace the battery. A variety of energy sources are currently available, including solar, thermal and vibration energyIt even uses the surrounding radio frequency (RF) to power it. 2, and the battery is sometimes the bane of mobile devices and sensors, this power supply is not reliable, must be charged or replaced regularly, may become the biggest weakness of the Internet of Things (IoT).
3, [rice charging joint is covered by oxide] The surface of the metal charging joint of rice is easy to be oxidized, and the oxide covers the metal joint, resulting in no charging. Take a small blade and gently scrape the metal joint, and then try to charge it. (3) [bracelet charging cable failure] This is a hardware failure, and the detection method is to borrow the weekTry around a friend's charging cable, if you can charge it, you have a problem with your charging cable. 4, this requires relevant manufacturers to invest a lot of manpower and material resources in integrating security protocols and security software, and strive to reduce the obstacles encountered by adding advanced security features to Internet of Things products to ensure that the threshold is lowered in terms of ensuring security.
5, in the new era of the Internet of Things, the revolution of tactile sensors: the source of green power in the ultra-micro world With the rapid development of the Internet of Things (IoT), ultra-micro, low-power sensors and devices have become the invisible pillar of People's Daily life.However, the challenge of continuously powering countless devices looms large, with the size and weight of conventional batteries limiting their portability and sustainability. Tribopower generation technology came into being, providing a lifeline to this problem.
6. Huawei HiLink solves these problems through the "three-piece set" of HiLink open platform, LiteOS end-side intelligent system and IoT dedicated chip. The HiLink platform has connected more than 30 million users and 600 ecological partners, covering more than 100 categories, providing one-stop development tools for developers and reducing the difficulty of hardware adaptation.
1, it is indeed the same principle as the transformer, but you seem to have it backwards, the efficiency of wireless charging is far lower than the efficiency of the transformer. The efficiency of a well-designed high-frequency transformer can exceed 95%, while the efficiency of wireless power supply is mostly not more than 50%, and I tried to do it myself last year, and the highest efficiency was only 2%.
2, the principle of wireless charging of mobile phones is the same as the principle of transformers. That is, when the coil does not move, the magnetic field strength changes periodically and the stone current is generated. The principle of electric motor generation is that the relative motion between the coil and the magnetic field generates current. Wireless charger refers to the use of electromagnetic wave inductionPrinciple A device for charging, similar in principle to a transformer.
3, a bit like, is the use of an induction coil. The origin of wireless charging technology is the use of wireless power transmission technology, the use of magnetic resonance in the air between the charger and the device to transfer charges, coils and capacitors form resonance between the charger and the device, to achieve efficient transmission of electric energy technology.
4, the principle of wireless charging technology is actually very simple, "the so-called wireless charging technology, its basic principle and the principle of the transformer, is the principle of" electricity generated magnetism, magnetic generated electricity "that we have learned in middle school physics class.
5, the use of electromagnetic induction principle for charging equipment, the principle is similar to the transformer, through the transmitter and receiver end set coil, transmitter coil under the action of power to send electromagnetic signals, the receiving end coil to receive electromagnetic signals and electromagnetic signals into current, so as to achieve the purpose of wireless charging.
6, wireless charger is the use of electromagnetic induction principle of charging equipment, its principle and transformer similar, through the sending and receiving end of each arranged a coil, the sending end of the coil under the action of power to the outside electromagnetic signal, the receiving end of the coil received electromagnetic signal and electromagnetic signalConverted into current, so as to achieve the purpose of wireless charging.
vivo/iQOO currently supports wireless charging devices are: X90 Pro, X90 Pro, X Fold, iQOO 10 Pro, X80 Pro Snapdragon, X80 Pro Guet, X Fold, X Note, iQOO 9 Pro, X70 Pro, iQOO 8 Pro.
vivo/iQOO Currently supports wireless charging devices are: X FoldiQOO 11 Pro, X90 Pro, X90 Pro, X Fold, iQOO 10 Pro, X80 Pro Snapdragon, X80 Pro Guet, X Fold, X Note, iQOO 9 Pro, X70 Pro, iQOO 8 Pro. More use doubts can enter vivo official website --ti wireless charging coil My -- online customer service -- input manual ti wireless charging coil , consult online customer service feedback.
vivo support wireless charging mobile phone models include iQOO11Pro, X90Pro, X90Pro, XFold, iQOO10Pro, X80Pro Snapdragon version, X80Pro Guet version, XFold, XNote, iQOO9Pro, X70Pro, iQOO8Pro and other vivo mobile phones.
vivo mobile phone support wireless charging ti wireless charging coil , but not all vivo support wireless charging. Currently, the models that support wireless charging are: iQOO11Pro, X90Pro, X90Pro, XFold,iQOO10Pro, X80Pro Snapdragon, X80Pro Guet, XFold, XNote, iQOO9Pro, X70Pro, iQOO8Pro.
The power system of new energy vehicles includes the electric drive system and the power supply system. The electric drive system includes the motor, the electric controller and the gearbox, which are the core components of driving electric vehicles. The power supply system includes an on-board chargeThe motor (OBC), DC-DC converter and high voltage distribution box are the core components of the power battery pack for charging, energy conversion and distribution.
Pure electric vehicle. Pure electric vehicles are an important component of new energy vehicles, which rely on electric energy to drive the operation of the car, and electric energy to drive the motor to provide kinetic energy for the car. A hybrid car. Hybrid vehicles rely on a variety of power to drive the operation of the car, mainly gas-electric hybrid, that is, on the basis of traditional energy vehicles to increase the motor and power system. Looking to the future, the development trend of new energy vehicle technology will be more diversified, electric vehicles and hybridPower market segments will be further expanded; Autonomous driving technology will lead the leap in travel experience, and safety and efficiency will be improved simultaneously; The integration of sharing economy will maximize the efficiency of car use; The deep integration of the industrial chain will reduce costs and bring more convenient services to consumers.
In short, the development trend of new energy vehicle drive motors is high efficiency, lightweight, high power, intelligent and diversified. With the continuous innovation and breakthrough of technology, the drive motor of new energy vehicles will achieve more efficient, lighter, stronger, smarter and more diversified development. This will provide new power for small retardersThe promotion and popularization of source cars provide strong support to promote the sustainable development of global energy.
New energy vehicles have also made great progress in energy management and charging technology. The intelligent energy management system can optimize the use of energy and improve energy efficiency according to the user's driving habits, road conditions and power grid conditions. At the same time, smart charging technology is also evolving to achieve an efficient and convenient charging experience.
Compared with traditional fuel vehicles and pure electric models, the alternative advantages of hybrid technology are more obvious. Some analysts believe that under the general trend of comprehensive mixing of fuel vehicles, mixingThe company will enter the "fast track" of development, and the annual sales volume is expected to reach tens of millions in the future. In fact, at the beginning of the development of China's new energy automobile industry, hybrid power is an important technological development direction.
1, wireless charger use method: the mobile phone standard charger and data cable connected to the wireless charger, and then the mobile phone is/horizontally placed in the center of the wireless charger base, wireless charging can be achieved, the indicator light will breatheEffect, extinguished after 5 seconds, plug and play, convenient and quick. 2, there are four main ways to achieve wireless charging, including the use of electromagnetic field interaction, radio wave transmission and other principles to achieve current transmission. Do these terms sound as confusing as reading a physics book? Let's read them one by one. The first is field-coupled charging. First, there are two sets of asymmetrical electric dipoles on the phone and charging device. When they are close together, they produce a coupling phenomenon and achieve the transmission of current.
3, electromagnetic induction The most common wireless charging method is to use the principle of electromagnetic induction, through the primary and secondaryThe coil induction generates an electric current, which transfers energy from the transmitting end to the receiving end. This approach has been achieved by the Wireless Charging Alliance (Wireless? The Power? Consortium; WPC). At present, wireless charging is mainly realized in four technical ways: magnetic induction technology, magnetic resonance technology, microwave technology and electric field coupling technology. Among them, magnetic induction technology and magnetic resonance technology are the technologies that are basically used in the current mass production products.
5, the mobile phone itself does not support wireless charging, need to install a wireless charging receiving back frameTo achieve wireless charging, such as Apple's iPhone5/5s/6/6s and so on. At present, due to the high cost of the first kind of mobile phone manufacturers, most of them are not willing to invest. Therefore, the third way: adding a wireless charging back clip is currently more widely available on the market: such as IKEA's recently launched mobile phone case series.
DSP chip selection parameters according to the applicationDifferent occasions and design objectives ti wireless charging coil , the focus of the selection of DSP chip is also different, its main parameters include the following aspects: (1) computing speed: First of all, ti wireless charging coil We must determine the algorithm of digital signal processing, after the algorithm is determined, the amount of computation and completion time will be roughly determined, according to the amount of computation. And its time requirements can estimate the lower limit of DSP chip computing speed.
Operation speed: First of all, we must determine the digital signal processing algorithm, calculateAfter the method is determined, the calculation amount and completion time are generally determined, and the lower limit of DSP chip computing speed can be estimated according to the calculation amount and its time requirements.
For example, the TMS320F28335 DSP, with its rich peripherals, has become a useful assistant for industrial control. When choosing a DSP, it is necessary to consider computing speed, price, hardware resources, development tools and power consumption. For example, for an adaptive FIR filter, the processing of 256 taps takes 768 MAC cycles.