In line with mobile phone charging standards will not, but the wireless charger is a little radiation, is an emerging product, there is no standard can be compared, so it is not recommended to use it to completely replace the wired charger.
The advantages of wireless charging technology are convenience and versatility. The disadvantages are low efficiency and can only provide electrical energy. The body's response to electric fields is strong, but the body's response to magnetic fields is almost non-so this system does not affect human health. As an electronic charging product, the charger itself can not avoid radiation, so the wireless charger has radiation is inevitableYes.
Some research institutions have done experiments to show that the radiation of mobile phones in the moment of your mobile phone ringing, is the maximum radiation, even up to 2000, and then stable at about 200 during the call. It can be seen that the radiation of the wireless charger does not seem to be as large as expected. As long as we standardize the use, buy a regular brand of wireless charger, there will be no danger.
In fact, it is certain to tell you that the harm of wireless charging to the human body is very small, almost negligible. This is just like the Wi-Fi, mobile phones, televisions and other electronic devices we useInduction and magnetic resonance 2 technologies.
2, the core magnetic resonance long distance wireless charging developed by Spurotin can successfully achieve wireless charging within one meter. 3, the world's first "long distance" wireless charging technology certification, the technology from Energous's charging product WattUp Mid Field, can transmit power within 1 meter, that is to say, in the future we can put the charger on the bed, and then within a meter can be automatically charged. And can support multiple devices for long-distance charging at the same time.
The distance of wireless chargers produced by different manufacturers will be different, generally speaking, effective charging can be achieved within 2 to 3 meters.
Generally about 0.9-2 meters high-power wireless charging transmission distance up to 5 meters wireless charging technology can be divided into low-power wireless charging and high-power wireless charging two ways. Low-power wireless charging often uses electromagnetic induction, such as the Qi method of charging mobile phones, but ZTE's electric vehicle wireless charging method uses induction.
Currently knownAccording to the report, the longest distance is 10 meters, using electromagnetic wave technology. The existing wireless charging technology uses magnetic field, electromagnetic wave, laser, ultrasonic and other energy transfer media. The 10-meter technology mentioned above, which uses electromagnetic waves as a medium, remains in the laboratory stage. At present, the commercial technology on the market is mainly magnetic field as the medium, which is divided into magnetic induction and magnetic resonance 2 technologies.
In summary, the radiation problem of wireless chargers does exist, but itsThe extent of the effects on human health is uncertain. In the use of wireless chargers, safety guidelines should be followed, and researchers are expected to provide more scientific evidence about their radiation effects to ensure the healthy development of wireless charging technology.
Reporter conducted a test, the results show that the wireless charger does exist radiation, the value is small but not without. Tests show that the radiation value of wireless chargers is less than that of mobile phones, such as Sharp SH8010C and Samsung i579, but when used with other electronic devices such as computers, WiFi, the cumulative effect cannot be ignored. Poles with a value greater than 2500In this case, it may have a great impact on health.
Many wireless chargers on the market do not indicate the radiation value, and the electromagnetic radiation standard for wireless chargers has not yet been introduced. According to the Regulations on Electromagnetic Radiation Protection, the average specific absorption rate (SAR) of the whole body of ordinary users should be less than 0.02W/kg for any consecutive 6 minutes within 1 day and 24 hours. Wireless charging, the principle is inductive charging. Samsung uses the same technology in its flagship Galaxy phones.
1, conclusion reiterate: Although the radiation of wireless chargers is small, the cumulative effect may have an impact on health, therefore, users should be vigilant while enjoying the convenience of wireless, and try to control the superposition of radiation sources to protect their own health. 2, conclusion: Wireless chargers do produce electromagnetic radiation, although the value is usually small, but should be wary of its possible cumulative effect. With the popularity of wireless charging technology, users are exposed to more and more radiation sources in daily life, such as mobile phonesThe long-term accumulation of computers, WiFi, etc., may have an impact on health. Wireless Charging Technology and controversy With the development of mobile Internet, the rise of wireless charging function has led to a discussion on electromagnetic radiation. 3, the Ministry of Communications Department staff said that wireless chargers have radiation is inevitable, but since it has been listed, it means that it must meet international standards, will not cause great harm to the human body. For this view, He Guili, director of the Tel Laboratory of the Telecommunication Research Institute of the Ministry of Industry and Information Technology, agreed: "Wireless chargers as long as they are done in accordance with technical specifications, there will be no radiation harm to the human body."But there is a key problem.
4, many family friends issued such a question: "The whole family has signals, radiation should not be small, will it affect the body of children or pregnant women?" After the identification result of the authoritative department is: "the radiation of the wireless router is very small, much smaller than the radiation of the mobile phone," that is, the radiation intensity is within the range of a human body can be accepted, so it can be said that the radiation of the wireless router is not large, relatively safe.
Conclusion: Wireless chargers do produce electromagnetic radiation, although the value is usually small, but should be wary of its possible cumulative effect. With the popularity of wireless charging technology, users are exposed to more and more radiation sources in daily life, such as mobile phones, computers, WiFi, etc., and long-term accumulation may have an impact on health. Wireless Charging Technology and controversy With the development of mobile Internet, the rise of wireless charging function has led to a discussion on electromagnetic radiation.
The harm is relatively small can be ignored, although wireless charging technology has appeared in the 19th century, but the popularity of mobile phone applications is not high.It uses the principle of "magnetic resonance" to allow the wireless charger to transmit an electric charge through the air to the phone's battery. Many wireless chargers on the market do not indicate radiation values, and electromagnetic radiation standards for wireless chargers have not yet been introduced.
Radiation is certain, otherwise the energy cannot be transmitted through space. The radio waves used for charging must be larger than the radiation power of the phone itself, otherwise the charging efficiency is too low. Calculated with a 1000mAh capacity lithium battery, 50% of the charging capacity is about 7~8Wh.
Although the technical content of the equipment is high, the economic cost of the equipment is higher and the maintenance cost is large. Because of the distance achievedHigh power wireless magnetoelectric conversion, so the energy consumption of the equipment is high. As the distance and power of wireless charging devices increase, the loss of idle work will be greater.
Wireless charging will not accelerate battery aging, will not have radiation to the body. The principle of wireless charging is electromagnetic induction. The charging dock is like an iron core with some primary coils wrapped around it. Cell phones have secondary coils built into them. The primary coil is energized to generate electromagnetic induction, so that the secondary coil generates induction voltage, and generates induction current to charge the mobile phone after loading. So don't worry.
As an electronic charging product, chargerInevitably, radiation will be generated, so the existence of radiation in wireless chargers is an inevitable phenomenon. However, the power of wireless chargers is usually small, the charging time is longer, and the amount of radiation generated is correspondingly small. Therefore, in theory, wireless chargers may not be too harmful to people. However, the radiation problem of wireless chargers still needs attention.