No strong wireless charging QI radiation standard radiation Wireless charging QI radiation standard , has no effect on the human body! The main principle is: wireless charging wireless charging QI radiation standard how much the way is electromagnetic induction, magnetic resonance, electric field coupling and radio wave transmission, wireless charging of mobile phones mostly uses the principle of electromagnetic induction.
For the human body: wireless charging technology is safe and harmless to the human body. The resonance principle used by wireless charging is magnetic field resonance, which is transmitted only between coils resonating at the same frequency, and other devices cannot accept the band, in addition, the magnetic field used by wireless charging technology is itself harmful to peopleIt's harmless.
There is a little radiation, as long as the person is not between the transmitter and the receiver, the radiation level is very small, and the charging frequency is inconsistent with the main absorption frequency of the human body, the harm is completely negligible. In theory, wireless charging technology is safe and harmless to the human body, the resonance principle used by wireless charging is magnetic field resonance, which is only transmitted between coils resonating at the same frequency, and other devices cannot accept the band, in addition, the magnetic field used by wireless charging technology is itself harmless to the human body.
With the development of mobile Internet, the rise of wireless charging function leads to The QI radiation standard of wireless charging is much about the discussion of electromagnetic radiation. Although the wireless charging technology used in smartphones by Nokia and other brands is convenient, the electromagnetic radiation caused by the use of the technology has raised concerns. The health effects of electromagnetic radiation are complex and require long-term studies to determine its long-term effects, just as secondhand smoke is known to cause cancer.
Does not harm the human body. "As long as the wireless charger is done according to the technical specifications, it will not have a radiation hazard to the human body." He Guili said. This shows that the Internet rumors are not true. Now more and more peopleThe greater the dissipation of useless work will be.
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.
There is a little radiation, as long as the person is not between the transmitter and the receiver, the radiation level is very small, and the charging frequency is inconsistent with the main absorption frequency of the human body, the harm can be ignoredNever mind.
1, wireless charger operating frequency, according to QI standard is 110-205kHz; The frequency of mobile phone communication is in the range of 0.8GHz to 2GHz (the communication system will vary, 1GHz=10^9Hz).
2, taking the lithium battery with 1000mAh capacity as an example, the radiation of the wireless charger is calculated. 50% charging capacity is about 7~8Wh. If it is required to fill in about two hours, the maximum charging power toAt least to reach 1W (GSM900 mobile phone maximum power of about 2W); Since the wireless charging method of the phone is to place the phone above the charger rather than inside, the radiation leakage rate can be not small.
3, the test found: using a high-sensitivity radiation tester, the radiation value of the wireless charger is between 150 and 180, although compared to the 250 to 627 in front of the computer screen or the thousands of values when making a phone call, but the cumulative effect may not be ignored. At the same time, when wireless chargers, mobile phones, computers and other electronic devices are used together, the radiation value will increase significantly.
4. RootAccording to the Electromagnetic Radiation Protection Regulations, the average radiation absorption rate of the whole body should be less than 0.02 w/kg within 24 hours a day for 6 minutes. However, there are no specific standards for wireless charging. Experts say that while there are national standards for traditional mobile phone chargers, there should be national industry standards for emerging wireless charging devices as soon as possible. The Qi wireless charging standard uses a low frequency non-ionization frequency (110-205khz) that is harmless to the human body.
1. Prolonged exposure to high levels of radiation may pose a health hazard." Therefore, wireless charging QI radiation standard , in order to prevent radiation addition effect wireless charging QI radiation standard , multiple electronic devices in the home and office should be dispersed, try not to use all the equipment at the same time.
2, with the development of mobile phone technology, wireless charging has been popular, there are rumors that wireless charging this kind of"The radiation generated by the "air separation charging" technology is extremely strong and can harm your health. The truth wireless charging QI radiation standard : Wireless charging technology according to the technical principle, can be divided into three categories, namely electromagnetic induction, magnetic resonance and radio wave.
3, radiation will certainly have, but without the current space charging, there is no evidence that there will be damage to the body radiation standard and space area relationship. According to the safety limit set by the International Non-Ionizing Radiation Research Committee, the safe range of radiation that the human body can withstand is 10 watts/square meter. According to the family residence 90 square metersCalculation, residents can withstand the maximum radiation power of 900 watts or so.
4, electronic products have radiation, but wireless charging QI radiation standard You should rest assured that millet air separation charging technology is not only tested by millet company, but also recognized by the state will be listed, the amount of radiation is safe.
QI radiation standard with 1000mAh capacity wireless chargeHow many lithium battery as an example to calculate wireless charge QI radiation standard Wireless charger Wireless charge QI radiation standard how much radiation. 50% charging capacity is about 7~8Wh. If the requirement is about two hours full of wireless charging QI radiation standard , the maximum charging power should reach at least 1W (GSM900 mobile phone maximum power of about 2W); Because the mobile phone wireless charging method is to place the phone above the charger rather thanInside the wireless charge QI radiation standard how much , so the radiation leakage rate may not be small.
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.
The test found that using a high-sensitivity radiation tester, the radiation value of the wireless charger was between 150 and 180, although compared to 250 to 627 in front of a computer screen or a mobile phone callThe number in the thousands of speech hours is small, but the cumulative effect may not be negligible. At the same time, when wireless chargers, mobile phones, computers and other electronic devices are used together, the radiation value will increase significantly.