3, the recent e-commerce platforms are requiring QI certification, the deep light standard is not only familiar with the wireless charging QI standard certification, but also familiar with the access certification requirements for this product to enter the foreign market. This QI is the Wireless charging Alliance (Wireless Power Consortium, hereinafter referred to as the "alliance") launched the "wireless charging" standard, the purpose is to make different brands of products, as long as there is a Qi logo, can be charged with Qi wireless charger.
2, wireless charger refers to the use of electromagnetic wave induction principle for charging equipment, the principle is similar to a transformer. There is a coil in the sending end and the receiving end. The sending end coil is connected to the wired power supply to generate an electromagnetic signal, and the receiving end coil senses the electromagnetic signal of the sending end to generate a current to charge the battery.
3. HandsA receiving/transmitting coil is arranged at both ends of the machine and the wireless charger. The current of the wireless charger generates a magnetic field through the coil at the transmitting end. When the coil at the receiving end of the mobile phone is close to the magnetic field, the current will be generated, and then it will be converted into usable DC direct current by the rectifier and voltage regulator filter circuit built in the mobile phone. Well, it's a bit of a headache to look at this principle.
The basic principle of wireless charging is to convert the current into a magnetic field, which is transmitted through the air and then converted into a current to be transmitted to the intelligent terminal. The input terminal will be fully powered by AC mains when the system is workingThe bridge rectifier circuit is converted into direct current, or the 24V direct current terminal is used to supply power to the system. After passing through the power management module, the output direct current is converted into high-frequency alternating current through the 2M active crystal oscillator inverter to supply the primary winding.
The principle of wireless charging: electromagnetic induction. The charging base and the mobile phone terminal have built-in coils respectively. When the two are close, the transmitting coil generates a certain current in the mobile phone receiving coil based on the alternating current of a certain frequency through electromagnetic induction, thus transferring the electrical energy from the transmitting end to the receiving end, and then starting to supply power to the mobile phone from the charging seat. Magnetic resonance.
Due to charger with useThe electrical device transmits energy by inductive coupling, and no wires are connected between the two, so the charger and the electrical device can be exposed without conducting contacts. Wireless charging mainly uses the principle of electromagnetic induction, magnetic resonance and radio wave technology.
Wireless charging system mainly adopts the principle of electromagnetic induction. Wireless charger refers to the charger that does not need to be connected to the terminal device that needs to be charged without the traditional charging power cord, using the latest wireless charging technology, through the use of the magnetic field generated between the coils, the magic transmission of electrical energy, inductive coupling technology will become a bridge connecting the charging base station and equipment.
1, wireless audio transceiver, its charging method in the process of completing the Internet should be as long as its receiver completes the instruction, let her stop accepting, then it is completed.
2, wireless audio transceiver is a device, mainly divided into two types of receivers and transmitters, they through different technologies to achieve wireless transmission of audio and video. Among them, the most common technologies include 8011 wireless LAN technology, WHDI technology andIntel WiDi technology. When the 8011 technology wireless audio and video transceiver is working, it compresses the audio and video stream at the transmitting end and then transmits it wirelessly.
3, wireless audio and video transceiver, is the audio and video signal from the signal source (computer or high-definition playback equipment) wireless transmission to the remote HDTV or high-definition projector. Wireless audio and video transceiver is a wireless audio and video transmission device.
4, the wireless audio and video transceiver runs on the 5GHz frequency, which can meet the speed requirements of encrypted 1080p audio and video signals in the home wireless transmission. Users can put their own LCD /Plasma TVS, projectors, DVD players, set-top boxes, cameras, game consoles, PCS and even smart home appliances are all used in the WHDI field to solve their own signal transmission problems.
1, the MIMO system (multiple-input multiple-output) refers to the use of Multiple transmitting antennas and receiving antennas at the transmitting end and receiving end respectivelyCharge transceiver , so that the signal is transmitted and received through multiple antennas at the transmitting end and the receiving end Wireless charge transceiver , so as to improve the communication quality.
2, MIMO is an abstract mathematical model used to describe the multi-antenna wireless communication system, which can use multiple antennas at the transmitting end to send signals independently, while using multiple antennas at the receiving end to receive and recover the original information. It is the core technology used in the 8011n. The core technology is IEEE's new wireless LAN technology with speeds up to 600 megabits per second. Also, proprietary MIMO technologyThe technique can improve the performance of an already high network.
3, MIMO technology refers to the use of multiple transmitting antennas and receiving antennas at the transmitting end and receiving end respectively, so that the signal is transmitted and received through multiple antennas at the transmitting end and the receiving end, so as to improve the quality of communication. MIMO can make full use of space resources, achieve multiple and multiple collection through multiple antennas, and can double the channel capacity of the system without increasing spectrum resources and antenna transmission power, showing obvious advantages and being regarded as the core technology of the next generation of mobile communication.